initial commmmit

.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

.idea/gradle.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="NullableNotNullManager">
+    <option name="myDefaultNullable" value="android.support.annotation.Nullable" />
+    <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />
+    <option name="myNullables">
+      <value>
+        <list size="4">
+          <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
+          <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
+          <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
+          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+        </list>
+      </value>
+    </option>
+    <option name="myNotNulls">
+      <value>
+        <list size="4">
+          <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
+          <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
+          <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
+          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+        </list>
+      </value>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/WifiP2P.iml" filepath="$PROJECT_DIR$/WifiP2P.iml" />
+      <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
+    </modules>
+  </component>
+</project>

.idea/runConfigurations.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,31 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.3"
+    defaultConfig {
+        applicationId "jenny.daniel.wifip2p"
+        minSdkVersion 22
+        targetSdkVersion 22
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    compile 'com.android.support:design:25.3.1'
+    testCompile 'junit:junit:4.12'
+}

app/proguard-rules.pro

@@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\myPrograms\Android\sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/flashwifi/wifip2p/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package com.flashwifi.wifip2p;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("jenny.daniel.wifip2p", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.flashwifi.wifip2p">
+
+    <uses-sdk android:minSdkVersion="22" />
+
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme.NoActionBar">
+        <activity android:name="com.flashwifi.wifip2p.MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity android:name="com.flashwifi.wifip2p.ChatActivity"
+            android:parentActivityName="com.flashwifi.wifip2p.MainActivity" >
+        </activity>
+
+        <service android:name="com.flashwifi.wifip2p.WiFiDirectBroadcastService"  android:description="@string/wifi_direct" />
+
+        <service android:name="com.flashwifi.wifip2p.MessengerService" android:process=":remote" />
+        <service android:name="com.flashwifi.wifip2p.AccessPointService" android:process=":remote" />
+
+    </application>
+
+</manifest>

app/src/main/java/com/flashwifi/wifip2p/AccessPointService.java

@@ -0,0 +1,77 @@
+package com.flashwifi.wifip2p;
+import android.app.Service;
+import android.content.BroadcastReceiver;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.wifi.p2p.WifiP2pManager;
+import android.os.Binder;
+import android.os.IBinder;
+import android.util.Log;
+
+import java.util.Random;
+
+public class AccessPointService extends Service {
+    public final static String TAG = "AccessPointService";
+
+    // Binder given to clients
+    private final IBinder mBinder = new LocalBinder();
+    // Random number generator
+    private final Random mGenerator = new Random();
+
+    private boolean setup = false;
+
+    // broadcast stuff
+    WifiP2pManager mManager;
+    WifiP2pManager.Channel mChannel;
+    BroadcastReceiver mReceiver;
+    IntentFilter mIntentFilter;
+
+    // socket stuff
+    AccessPointTask apTask;
+    boolean apRuns;
+
+    public void startAP() {
+        Log.d("", "start AP");
+        if (!apRuns) {
+            apRuns = true;
+            apTask.execute(this);
+        } else {
+            Log.d("", "startSocketServer: ALREADY RUNNING");
+        }
+    }
+
+
+    /**
+     * Class used for the client Binder.  Because we know this service always
+     * runs in the same process as its clients, we don't need to deal with IPC.
+     */
+    public class LocalBinder extends Binder {
+        AccessPointService getService() {
+            // Return this instance of LocalService so clients can call public methods
+            return AccessPointService.this;
+        }
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        unregisterReceiver(mReceiver);
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        apTask = new AccessPointTask();
+    }
+
+    private void sendUpdateUIBroadcast(){
+        Intent local = new Intent();
+        local.setAction("jenny.daniel.wifip2p.update_ui");
+        this.sendBroadcast(local);
+    }
+}

app/src/main/java/com/flashwifi/wifip2p/AccessPointTask.java

@@ -0,0 +1,106 @@
+package com.flashwifi.wifip2p;
+
+import android.content.Context;
+import android.net.wifi.WifiConfiguration;
+import android.net.wifi.WifiInfo;
+import android.net.wifi.WifiManager;
+import android.os.AsyncTask;
+import android.util.Log;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class AccessPointTask extends AsyncTask<Context, Void, String> {
+
+    private final static String TAG = "AccessPointTask";
+
+    @Override
+    protected String doInBackground(Context... params) {
+        String ssid = "iota-wifi-121431";
+        Context context = params[0];
+        WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        WifiInfo w = wifi.getConnectionInfo();
+        Log.d("dsd", w.toString());
+
+        if (wifi.isWifiEnabled())
+        {
+            wifi.setWifiEnabled(false);
+        }
+        Method[] wmMethods = wifi.getClass().getDeclaredMethods(); //Get all declared methods in WifiManager class
+        boolean methodFound = false;
+
+        for (Method method: wmMethods){
+            if (method.getName().equals("setWifiApEnabled")){
+                methodFound = true;
+                WifiConfiguration netConfig = new WifiConfiguration();
+                netConfig.SSID = "\""+ssid+"\"";
+                netConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
+                //netConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
+                //netConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
+                //netConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
+                //netConfig.preSharedKey = password;
+                //netConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
+                //netConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
+                //netConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
+                //netConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
+
+                try {
+                    boolean apstatus = (Boolean) method.invoke(wifi, netConfig,true);
+                    //statusView.setText("Creating a Wi-Fi Network \""+netConfig.SSID+"\"");
+                    for (Method isWifiApEnabledmethod: wmMethods)
+                    {
+                        if (isWifiApEnabledmethod.getName().equals("isWifiApEnabled")){
+                            while (!(Boolean)isWifiApEnabledmethod.invoke(wifi)){
+                            };
+                            for (Method method1: wmMethods){
+                                if(method1.getName().equals("getWifiApState")){
+                                    int apstate;
+                                    apstate = (Integer)method1.invoke(wifi);
+                                    //                      netConfig = (WifiConfiguration)method1.invoke(wifi);
+                                    //statusView.append("\nSSID:"+netConfig.SSID+"\nPassword:"+netConfig.preSharedKey+"\n");
+                                }
+                            }
+                        }
+                    }
+
+                    if(apstatus)
+                    {
+                        System.out.println("SUCCESSdddd");
+                        //statusView.append("\nAccess Point Created!");
+                        //finish();
+                        //Intent searchSensorsIntent = new Intent(this,SearchSensors.class);
+                        //startActivity(searchSensorsIntent);
+                    }
+                    else
+                    {
+                        System.out.println("FAILED");
+
+                        //statusView.append("\nAccess Point Creation failed!");
+                    }
+                }
+                catch (IllegalArgumentException e) {
+                    e.printStackTrace();
+                }
+                catch (IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                catch (InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        if (!methodFound){
+            //statusView.setText("Your phone's API does not contain setWifiApEnabled method to configure an access point");
+        }
+        return null;
+    }
+
+    @Override
+    protected void onPostExecute(String result) {}
+
+    @Override
+    protected void onPreExecute() {}
+
+    @Override
+    protected void onProgressUpdate(Void... values) {}
+}

app/src/main/java/com/flashwifi/wifip2p/ChatActivity.java

@@ -0,0 +1,203 @@
+package com.flashwifi.wifip2p;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.ServiceConnection;
+import android.net.NetworkInfo;
+import android.net.wifi.p2p.WifiP2pInfo;
+import android.net.wifi.p2p.WifiP2pManager;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.net.InetAddress;
+import java.util.ArrayList;
+
+
+public class ChatActivity  extends AppCompatActivity {
+
+    ArrayList<String> arrayList;
+    ArrayAdapter<String> listAdapter;
+    ListView listView;
+
+    String name;
+    String address;
+
+    WiFiDirectBroadcastService mService;
+    AccessPointService apService;
+    boolean mBound = false;
+    InetAddress groupOwnerAddress;
+
+    BroadcastReceiver updateUIReceiver;
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+
+        IntentFilter filter = new IntentFilter();
+        filter.addAction("jenny.daniel.wifip2p.update_ui");
+
+        updateUIReceiver = new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                updateUi();
+            }
+        };
+        registerReceiver(updateUIReceiver, filter);
+
+        // Bind to LocalService
+        Intent intent = new Intent(this, WiFiDirectBroadcastService.class);
+        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
+    }
+
+    private void updateUi() {
+        NetworkInfo network_info = mService.getNetwork_info();
+        WifiP2pInfo p2p_info = mService.getP2p_info();
+        TextView connection_status = (TextView) findViewById(R.id.connection_status);
+        connection_status.setText(network_info.toString());
+        if (network_info.getState() == NetworkInfo.State.CONNECTED) {
+            if (p2p_info.isGroupOwner) {
+                addMessageRight("Network", "You are the group owner");
+                // start the socket on port 9999
+                mService.startSocketServer();
+            } else {
+                addMessageRight("Network", "You are a member of the group");
+                // connect to the socket
+                groupOwnerAddress = p2p_info.groupOwnerAddress;
+            }
+            addMessageRight("Network", "Group owner address: " + p2p_info.groupOwnerAddress.getHostAddress());
+        }
+
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        unbindService(mConnection);
+        mBound = false;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_chat);
+
+        // Get the Intent that started this activity and extract the string
+        Intent intent = getIntent();
+        name = intent.getStringExtra("name");
+        address = intent.getStringExtra("address");
+
+        initUI();
+
+    }
+
+
+
+    private void connectToPeer(String address) {
+        if (mBound) {
+            mService.connect(address, new WifiP2pManager.ActionListener() {
+                @Override
+                public void onSuccess() {
+                    Toast.makeText(getApplicationContext(), "Connected to peer", Toast.LENGTH_SHORT).show();
+                }
+                @Override
+                public void onFailure(int reason) {
+                    Toast.makeText(getApplicationContext(), "Error connecting to peer", Toast.LENGTH_SHORT).show();
+                }
+            });
+        } else {
+            Toast.makeText(getApplicationContext(), "Service not available", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private void initUI() {
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        toolbar.setTitle(name);
+        setSupportActionBar(toolbar);
+
+        final EditText input = (EditText) findViewById(R.id.chat_input);
+        Button button = (Button) findViewById(R.id.btn_send);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(final View view) {
+                addMessageRight(name, input.getText().toString());
+                // send the message to the peer
+                mService.sendMessageToSocketServer(groupOwnerAddress, input.getText().toString());
+            }
+        });
+
+        listView = (ListView) findViewById(R.id.peer_list);
+        arrayList = new ArrayList<>();
+
+        listAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, arrayList);
+        listView.setAdapter(listAdapter);
+    }
+
+    public void addMessageLeft(String name, String text) {
+        listAdapter.notifyDataSetInvalidated();
+        listAdapter.add(name + ": " + text);
+        listAdapter.notifyDataSetChanged();
+
+        listView.setSelection(listAdapter.getCount() - 1);
+    }
+
+    public void addMessageRight(String name, String text) {
+        listAdapter.notifyDataSetInvalidated();
+        listAdapter.add(name + ": " + text);
+        listAdapter.notifyDataSetChanged();
+    }
+
+    /** Defines callbacks for service binding, passed to bindService() */
+    private ServiceConnection mConnection = new ServiceConnection() {
+
+        @Override
+        public void onServiceConnected(ComponentName className,
+                                       IBinder service) {
+            // We've bound to LocalService, cast the IBinder and get LocalService instance
+            WiFiDirectBroadcastService.LocalBinder binder = (WiFiDirectBroadcastService.LocalBinder) service;
+            mService = binder.getService();
+            mBound = true;
+            // start connection
+            connectToPeer(address);
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName arg0) {
+            mBound = false;
+        }
+    };
+
+    /** Defines callbacks for service binding, passed to bindService() */
+    private ServiceConnection apConnection = new ServiceConnection() {
+
+        @Override
+        public void onServiceConnected(ComponentName className,
+                                       IBinder service) {
+            // We've bound to LocalService, cast the IBinder and get LocalService instance
+            AccessPointService.LocalBinder binder = (AccessPointService.LocalBinder) service;
+            apService = binder.getService();
+            //apBound = true;
+            // start connection
+            //connectToPeer(address);
+            apService.startAP();
+
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName arg0) {
+            mBound = false;
+        }
+    };
+
+}

app/src/main/java/com/flashwifi/wifip2p/ClientTask.java

@@ -0,0 +1,57 @@
+package com.flashwifi.wifip2p;
+
+import android.os.AsyncTask;
+import android.util.Log;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+
+public class ClientTask extends AsyncTask<String, Void, String> {
+
+    private final static String TAG = "ClientTask";
+
+    @Override
+    protected String doInBackground(String... params) {
+        String host = params[0];
+        String message = params[1];
+        int port = 9999;
+        Socket socket = new Socket();
+        Log.d(TAG, "connectToSocketServer: socket created");
+        byte buf[]  = new byte[1024];
+        try {
+            socket.bind(null);
+            Log.d(TAG, "connectToSocketServer: socket bind");
+            socket.connect((new InetSocketAddress(host, port)), 500);
+            Log.d(TAG, "connectToSocketServer: socket connected");
+            DataOutputStream DOS = new DataOutputStream(socket.getOutputStream());
+            DOS.writeUTF(message);
+            Log.d(TAG, "connectToSocketServer: utf written");
+            socket.close();
+        } catch (IOException e) {
+            //catch logic
+            Log.d(TAG, "connectToSocketServer: io exception");
+        } finally {
+            if (socket != null) {
+                if (socket.isConnected()) {
+                    try {
+                        socket.close();
+                    } catch (IOException e) {
+                        //catch logic
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    @Override
+    protected void onPostExecute(String result) {}
+
+    @Override
+    protected void onPreExecute() {}
+
+    @Override
+    protected void onProgressUpdate(Void... values) {}
+}

app/src/main/java/com/flashwifi/wifip2p/MainActivity.java

@@ -0,0 +1,261 @@
+package com.flashwifi.wifip2p;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.ServiceConnection;
+import android.net.wifi.p2p.WifiP2pManager;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.support.design.widget.FloatingActionButton;
+import android.support.design.widget.Snackbar;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.Toolbar;
+import android.util.Log;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+
+import java.util.ArrayList;
+
+public class MainActivity extends AppCompatActivity {
+
+    public final static String TAG = "MainActivity";
+
+    WiFiDirectBroadcastService mService;
+    boolean mBound = false;
+    BroadcastReceiver updateUIReceiver;
+
+    ArrayList<String> arrayList;
+    ArrayAdapter<String> listAdapter;
+
+
+
+
+
+
+    Messenger xService = null;
+    /** Flag indicating whether we have called bind on the service. */
+    boolean xIsBound;
+
+    static class IncomingHandler extends Handler {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MessengerService.MSG_SET_VALUE:
+                    Log.d(TAG, "Received from service: " + msg.arg1);
+                    break;
+                default:
+                    super.handleMessage(msg);
+            }
+        }
+    }
+
+    /**
+     * Target we publish for clients to send messages to IncomingHandler.
+     */
+    final Messenger xMessenger = new Messenger(new IncomingHandler());
+
+    /**
+     * Class for interacting with the main interface of the service.
+     */
+    private ServiceConnection xConnection = new ServiceConnection() {
+        public void onServiceConnected(ComponentName className,
+                                       IBinder service) {
+            // This is called when the connection with the service has been
+            // established, giving us the service object we can use to
+            // interact with the service.  We are communicating with our
+            // service through an IDL interface, so get a client-side
+            // representation of that from the raw service object.
+            xService = new Messenger(service);
+
+            // We want to monitor the service for as long as we are
+            // connected to it.
+            try {
+                Message msg = Message.obtain(null,
+                        MessengerService.MSG_REGISTER_CLIENT);
+                msg.replyTo = xMessenger;
+                xService.send(msg);
+
+                // Give it some value as an example.
+                msg = Message.obtain(null,
+                        MessengerService.MSG_SET_VALUE, this.hashCode(), 0);
+                xService.send(msg);
+            } catch (RemoteException e) {
+                // In this case the service has crashed before we could even
+                // do anything with it; we can count on soon being
+                // disconnected (and then reconnected if it can be restarted)
+                // so there is no need to do anything here.
+            }
+        }
+
+        public void onServiceDisconnected(ComponentName className) {
+            // This is called when the connection with the service has been
+            // unexpectedly disconnected -- that is, its process crashed.
+            xService = null;
+        }
+    };
+
+    void doBindService() {
+        // Establish a connection with the service.  We use an explicit
+        // class name because there is no reason to be able to let other
+        // applications replace our component.
+        bindService(new Intent(this,
+                MessengerService.class), xConnection, Context.BIND_AUTO_CREATE);
+        xIsBound = true;
+    }
+
+    void doUnbindService() {
+        if (xIsBound) {
+            // If we have received the service, and hence registered with
+            // it, then now is the time to unregister.
+            if (xService != null) {
+                try {
+                    Message msg = Message.obtain(null,
+                            MessengerService.MSG_UNREGISTER_CLIENT);
+                    msg.replyTo = xMessenger;
+                    xService.send(msg);
+                } catch (RemoteException e) {
+                    // There is nothing special we need to do if the service
+                    // has crashed.
+                }
+            }
+
+            // Detach our existing connection.
+            unbindService(xConnection);
+            xIsBound = false;
+        }
+    }
+
+
+
+
+
+
+
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_scrolling);
+
+        initUI();
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+
+        IntentFilter filter = new IntentFilter();
+        filter.addAction("jenny.daniel.wifip2p.update_ui");
+
+        updateUIReceiver = new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                updateUi();
+            }
+        };
+        registerReceiver(updateUIReceiver, filter);
+
+        // Bind to Service
+        Intent intent = new Intent(this, WiFiDirectBroadcastService.class);
+        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
+    }
+
+    private void updateUi() {
+        listAdapter.notifyDataSetInvalidated();
+        listAdapter.clear();
+        listAdapter.addAll(mService.getArrayList());
+        listAdapter.notifyDataSetChanged();
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        unbindService(mConnection);
+        mBound = false;
+    }
+
+
+    private void initUI() {
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        toolbar.setTitle("Discover Peers");
+        setSupportActionBar(toolbar);
+
+        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(final View view) {
+                onRefreshButtonClick();
+            }
+        });
+
+        ListView listView = (ListView) findViewById(R.id.peer_list);
+        arrayList = new ArrayList<>();
+
+        listAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, arrayList);
+        listView.setAdapter(listAdapter);
+
+        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
+                String[] splittedLine = arrayList.get(i).split(" : ");
+                String address = splittedLine[1];
+                String name = splittedLine[0];
+
+                startChat(address, name);
+            }
+        });
+    }
+
+    public void startChat(String address, String name) {
+        Intent intent = new Intent(this, ChatActivity.class);
+        intent.putExtra("address", address);
+        intent.putExtra("name", name);
+        startActivity(intent);
+    }
+
+    public void onRefreshButtonClick() {
+        final View view = findViewById(R.id.main_view);
+        if (mBound) {
+             mService.getPeerList(new WifiP2pManager.ActionListener() {
+                 @Override
+                 public void onSuccess() {
+                     Snackbar.make(view, "Successfully searched for peers", Snackbar.LENGTH_LONG).setAction("Action", null).show();
+                 }
+
+                 @Override
+                 public void onFailure(int reasonCode) {
+                     Snackbar.make(view, "Aaaargh :( Peering problem!", Snackbar.LENGTH_LONG).setAction("Action", null).show();
+                 }
+             });
+        }
+    }
+
+    /** Defines callbacks for service binding, passed to bindService() */
+    private ServiceConnection mConnection = new ServiceConnection() {
+
+        @Override
+        public void onServiceConnected(ComponentName className,
+                                       IBinder service) {
+            // We've bound to LocalService, cast the IBinder and get LocalService instance
+            WiFiDirectBroadcastService.LocalBinder binder = (WiFiDirectBroadcastService.LocalBinder) service;
+            mService = binder.getService();
+            mBound = true;
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName arg0) {
+            mBound = false;
+        }
+    };
+}

app/src/main/java/com/flashwifi/wifip2p/MessengerService.java

@@ -0,0 +1,134 @@
+package com.flashwifi.wifip2p;
+
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+
+public class MessengerService extends Service {
+    /** For showing and hiding our notification. */
+    NotificationManager mNM;
+    /** Keeps track of all current registered clients. */
+    static ArrayList<Messenger> mClients = new ArrayList<Messenger>();
+    /** Holds last value set by a client. */
+    static int mValue = 0;
+
+    /**
+     * Command to the service to register a client, receiving callbacks
+     * from the service.  The Message's replyTo field must be a Messenger of
+     * the client where callbacks should be sent.
+     */
+    static final int MSG_REGISTER_CLIENT = 1;
+
+    /**
+     * Command to the service to unregister a client, ot stop receiving callbacks
+     * from the service.  The Message's replyTo field must be a Messenger of
+     * the client as previously given with MSG_REGISTER_CLIENT.
+     */
+    static final int MSG_UNREGISTER_CLIENT = 2;
+
+    /**
+     * Command to service to set a new value.  This can be sent to the
+     * service to supply a new value, and will be sent by the service to
+     * any registered clients with the new value.
+     */
+    static final int MSG_SET_VALUE = 3;
+
+    /**
+     * Handler of incoming messages from clients.
+     */
+    static class IncomingHandler extends Handler {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MSG_REGISTER_CLIENT:
+                    mClients.add(msg.replyTo);
+                    break;
+                case MSG_UNREGISTER_CLIENT:
+                    mClients.remove(msg.replyTo);
+                    break;
+                case MSG_SET_VALUE:
+                    mValue = msg.arg1;
+                    for (int i=mClients.size()-1; i>=0; i--) {
+                        try {
+                            mClients.get(i).send(Message.obtain(null,
+                                    MSG_SET_VALUE, mValue, 0));
+                        } catch (RemoteException e) {
+                            // The client is dead.  Remove it from the list;
+                            // we are going through the list from back to front
+                            // so this is safe to do inside the loop.
+                            mClients.remove(i);
+                        }
+                    }
+                    break;
+                default:
+                    super.handleMessage(msg);
+            }
+        }
+    }
+
+    /**
+     * Target we publish for clients to send messages to IncomingHandler.
+     */
+    final Messenger mMessenger = new Messenger(new IncomingHandler());
+
+    @Override
+    public void onCreate() {
+        mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
+
+        // Display a notification about us starting.
+        showNotification();
+    }
+
+    @Override
+    public void onDestroy() {
+        // Cancel the persistent notification.
+        mNM.cancel(R.string.remote_service_started);
+
+        // Tell the user we stopped.
+        Toast.makeText(this, R.string.remote_service_stopped, Toast.LENGTH_SHORT).show();
+    }
+
+    /**
+     * When binding to the service, we return an interface to our messenger
+     * for sending messages to the service.
+     */
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mMessenger.getBinder();
+    }
+
+    /**
+     * Show a notification while this service is running.
+     */
+    private void showNotification() {
+        // In this sample, we'll use the same text for the ticker and the expanded notification
+        CharSequence text = getText(R.string.remote_service_started);
+
+        // The PendingIntent to launch our activity if the user selects this notification
+        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
+                new Intent(this, ChatActivity.class), 0);
+
+        // Set the info for the views that show in the notification panel.
+        Notification notification = new Notification.Builder(this)
+                .setTicker(text)  // the status text
+                .setWhen(System.currentTimeMillis())  // the time stamp
+                .setContentTitle(getText(R.string.local_service_label))  // the label of the entry
+                .setContentText(text)  // the contents of the entry
+                .setContentIntent(contentIntent)  // The intent to send when the entry is clicked
+                .build();
+
+        // Send the notification.
+        // We use a string id because it is a unique number.  We use it later to cancel.
+        mNM.notify(R.string.remote_service_started, notification);
+    }
+}

app/src/main/java/com/flashwifi/wifip2p/ServerTask.java

@@ -0,0 +1,46 @@
+package com.flashwifi.wifip2p;
+
+import android.os.AsyncTask;
+import android.util.Log;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+public class ServerTask extends AsyncTask<String, Void, String> {
+
+    private boolean running = true;
+
+    @Override
+    protected String doInBackground(String... params) {
+        try {
+
+            String msg_received = null;
+
+            while (running) {
+                ServerSocket serverSocket = new ServerSocket(9999);
+                Socket client = serverSocket.accept();
+                Log.d("ServerTask", "doInBackground: openend");
+                DataInputStream DIS = new DataInputStream(client.getInputStream());
+                msg_received = DIS.readUTF();
+                Log.d(">>>>>", msg_received);
+                serverSocket.close();
+            }
+
+            return msg_received;
+        } catch (IOException e) {
+            Log.d("", e.getMessage());
+            return null;
+        }
+    }
+
+    @Override
+    protected void onPostExecute(String result) {}
+
+    @Override
+    protected void onPreExecute() {}
+
+    @Override
+    protected void onProgressUpdate(Void... values) {}
+}

app/src/main/java/com/flashwifi/wifip2p/WiFiDirectBroadcastReceiver.java

@@ -0,0 +1,94 @@
+package com.flashwifi.wifip2p;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.net.NetworkInfo;
+import android.net.wifi.p2p.WifiP2pDevice;
+import android.net.wifi.p2p.WifiP2pDeviceList;
+import android.net.wifi.p2p.WifiP2pGroup;
+import android.net.wifi.p2p.WifiP2pInfo;
+import android.net.wifi.p2p.WifiP2pManager;
+import android.util.Log;
+
+import java.util.ArrayList;
+
+/**
+ * A BroadcastReceiver that notifies of important Wi-Fi p2p events.
+ */
+public class WiFiDirectBroadcastReceiver extends BroadcastReceiver {
+
+    public final static String TAG = "Brudiiii";
+
+    private WifiP2pManager mManager;
+    private WifiP2pManager.Channel mChannel;
+    private MainActivity mActivity;
+
+    private WiFiDirectBroadcastService service;
+
+    public WiFiDirectBroadcastReceiver(WifiP2pManager manager, WifiP2pManager.Channel channel, WiFiDirectBroadcastService service) {
+        super();
+        this.mManager = manager;
+        this.mChannel = channel;
+        this.service = service;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        String action = intent.getAction();
+        WifiP2pManager.PeerListListener myPeerListListener = new WifiP2pManager.PeerListListener() {
+            @Override
+            public void onPeersAvailable(WifiP2pDeviceList wifiP2pDeviceList) {
+                ArrayList<String> arrayList = new ArrayList<>();
+                for (WifiP2pDevice device : wifiP2pDeviceList.getDeviceList()) {
+                    arrayList.add(device.deviceName + " : " + device.deviceAddress);
+                }
+                // change the state of the service
+                service.setArrayList(arrayList);
+            }
+        };
+
+        if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
+            Log.d(TAG, "onReceive: WIFI_P2P_STATE_CHANGED_ACTION");
+            int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
+            if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
+                // Wifi P2P is enabled
+                Log.d(TAG, "Wifi P2P is enabled");
+
+            } else {
+                // Wi-Fi P2P is not enabled
+                Log.d(TAG, "Wi-Fi P2P is not enabled");
+            }
+            // Check to see if Wi-Fi is enabled and notify appropriate activity
+        } else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
+            Log.d(TAG, "onReceive: WIFI_P2P_PEERS_CHANGED_ACTION");
+            // Call WifiP2pManager.requestPeers() to get a list of current peers
+
+            // request available peers from the wifi p2p manager. This is an
+            // asynchronous call and the calling activity is notified with a
+            // callback on PeerListListener.onPeersAvailable()
+            if (mManager != null) {
+                mManager.requestPeers(mChannel, myPeerListListener);
+            }
+
+
+
+
+        } else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
+            Log.d(TAG, "onReceive: WIFI_P2P_CONNECTION_CHANGED_ACTION");
+            // Respond to new connection or disconnections
+            WifiP2pInfo p2p_info = intent.getParcelableExtra(WifiP2pManager.EXTRA_WIFI_P2P_INFO);
+            NetworkInfo network_info = intent.getParcelableExtra(WifiP2pManager.EXTRA_NETWORK_INFO);
+            WifiP2pGroup p2p_group = intent.getParcelableExtra(WifiP2pManager.EXTRA_WIFI_P2P_GROUP);
+            Log.d(TAG, "p2p_info: " + p2p_info);
+            Log.d(TAG, "network_info: " + network_info);
+            Log.d(TAG, "p2p_group: " + p2p_group);
+
+            Log.d(TAG, "onReceive: " + network_info.getState().toString());
+            service.setConnectionStateChanged(p2p_info, network_info, p2p_group);
+        } else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
+            Log.d(TAG, "onReceive: WIFI_P2P_THIS_DEVICE_CHANGED_ACTION");
+            // Respond to this device's wifi state changing
+        }
+    }
+}

app/src/main/java/com/flashwifi/wifip2p/WiFiDirectBroadcastService.java

@@ -0,0 +1,171 @@
+package com.flashwifi.wifip2p;
+import android.app.Service;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.NetworkInfo;
+import android.net.wifi.p2p.WifiP2pConfig;
+import android.net.wifi.p2p.WifiP2pDevice;
+import android.net.wifi.p2p.WifiP2pGroup;
+import android.net.wifi.p2p.WifiP2pInfo;
+import android.net.wifi.p2p.WifiP2pManager;
+import android.os.Binder;
+import android.os.IBinder;
+import android.util.Log;
+
+import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.Random;
+
+public class WiFiDirectBroadcastService extends Service {
+    public final static String TAG = "WiFiService";
+
+    // Binder given to clients
+    private final IBinder mBinder = new LocalBinder();
+    // Random number generator
+    private final Random mGenerator = new Random();
+
+    private boolean setup = false;
+
+    // broadcast stuff
+    WifiP2pManager mManager;
+    WifiP2pManager.Channel mChannel;
+    BroadcastReceiver mReceiver;
+    IntentFilter mIntentFilter;
+
+    // content attributes
+    ArrayList<String> arrayList = new ArrayList<>();
+    WifiP2pInfo p2p_info;
+    NetworkInfo network_info;
+    WifiP2pGroup p2p_group;
+    ArrayList<String> receivedMessages = new ArrayList<>();
+
+    // socket stuff
+    ServerTask serverTask;
+    boolean serverRuns;
+
+    public void startSocketServer() {
+        Log.d("", "startSocketServer: ");
+        if (!serverRuns) {
+            serverTask.execute();
+        } else {
+            Log.d("", "startSocketServer: ALREADY RUNNING");
+        }
+    }
+
+    public void sendMessageToSocketServer(InetAddress address, String message) {
+        new ClientTask().execute(address.getHostAddress(), message);
+    }
+
+    public WifiP2pInfo getP2p_info() {
+        return p2p_info;
+    }
+
+    public NetworkInfo getNetwork_info() {
+        return network_info;
+    }
+
+    public WifiP2pGroup getP2p_group() {
+        return p2p_group;
+    }
+
+    private void setupService() {
+        if (!setup) {
+            mManager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
+            mChannel = mManager.initialize(this, getMainLooper(), null);
+            mReceiver = new WiFiDirectBroadcastReceiver(mManager, mChannel, this);
+
+            mIntentFilter = new IntentFilter();
+            mIntentFilter.addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION);
+            mIntentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);
+            mIntentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);
+            mIntentFilter.addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION);
+
+            registerReceiver(mReceiver, mIntentFilter);
+
+            serverTask = new ServerTask();
+            serverRuns = false;
+
+
+            setup = true;
+        }
+    }
+
+    /**
+     * Class used for the client Binder.  Because we know this service always
+     * runs in the same process as its clients, we don't need to deal with IPC.
+     */
+    public class LocalBinder extends Binder {
+        WiFiDirectBroadcastService getService() {
+            // Return this instance of LocalService so clients can call public methods
+            return WiFiDirectBroadcastService.this;
+        }
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        unregisterReceiver(mReceiver);
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        setupService();
+    }
+
+    public ArrayList<String> getReceivedMessages() {
+        return receivedMessages;
+    }
+
+    private void addReceivedMessage(String message) {
+        receivedMessages.add(message);
+        sendUpdateUIBroadcastWithMessage(message);
+    }
+
+    public void getPeerList(WifiP2pManager.ActionListener action_listener) {
+        mManager.discoverPeers(mChannel, action_listener);
+    }
+
+    public ArrayList<String> getArrayList() {
+        return arrayList;
+    }
+
+    public void setArrayList(ArrayList<String> arrayList) {
+        this.arrayList = arrayList;
+        sendUpdateUIBroadcast();
+    }
+
+    public void setConnectionStateChanged(WifiP2pInfo p2p_info, NetworkInfo network_info, WifiP2pGroup p2p_group) {
+        this.p2p_info = p2p_info;
+        this.network_info = network_info;
+        this.p2p_group = p2p_group;
+        sendUpdateUIBroadcast();
+    }
+
+    private void sendUpdateUIBroadcast(){
+        Intent local = new Intent();
+        local.setAction("jenny.daniel.wifip2p.update_ui");
+        this.sendBroadcast(local);
+    }
+
+    private void sendUpdateUIBroadcastWithMessage(String message){
+        Intent local = new Intent();
+        local.putExtra("message", message);
+        local.setAction("jenny.daniel.wifip2p.update_ui");
+        this.sendBroadcast(local);
+    }
+
+    public void connect(String address, WifiP2pManager.ActionListener actionListener) {
+        WifiP2pDevice device;
+        WifiP2pConfig config = new WifiP2pConfig();
+        config.deviceAddress = address;
+        mManager.connect(mChannel, config, actionListener);
+    }
+}

app/src/main/res/layout/activity_chat.xml

@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:context="com.flashwifi.wifip2p.MainActivity">
+
+    <android.support.design.widget.AppBarLayout
+        android:id="@+id/app_bar"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/app_bar_height"
+        android:fitsSystemWindows="true"
+        android:theme="@style/AppTheme.AppBarOverlay">
+
+        <android.support.design.widget.CollapsingToolbarLayout
+            android:id="@+id/toolbar_layout"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:fitsSystemWindows="true"
+            app:contentScrim="?attr/colorPrimary"
+            app:layout_scrollFlags="scroll|exitUntilCollapsed">
+
+            <android.support.v7.widget.Toolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:layout_collapseMode="pin"
+                app:popupTheme="@style/AppTheme.PopupOverlay" />
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:id="@+id/connection_status"/>
+
+
+        </android.support.design.widget.CollapsingToolbarLayout>
+
+    </android.support.design.widget.AppBarLayout>
+
+    <ListView
+        android:id="@+id/peer_list"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        android:layout_marginBottom="40dp"
+        />
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/fab_margin"
+        app:layout_anchor="@id/app_bar"
+        app:layout_anchorGravity="bottom|end"
+        app:fabSize="normal"
+        app:srcCompat="@drawable/icon_refresh" />
+
+    <RelativeLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom"
+        android:layout_margin="10dp"
+        >
+
+        <EditText
+            android:id="@+id/chat_input"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginRight="42dp"
+            android:hint="Hallo, Daniel!"
+            android:layout_alignParentLeft="true"
+            android:background="#d9d9d9"
+            android:padding="5dp"/>
+
+        <Button
+            android:id="@+id/btn_send"
+            android:layout_width="32dp"
+            android:layout_height="32dp"
+            android:background="@drawable/icon_send"
+            android:layout_alignParentRight="true"
+            android:layout_marginLeft="10dp"
+            android:backgroundTint="@android:color/black" />
+    </RelativeLayout>
+
+
+
+
+</android.support.design.widget.CoordinatorLayout>

app/src/main/res/layout/activity_scrolling.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:context="com.flashwifi.wifip2p.MainActivity"
+    android:id="@+id/main_view">
+
+    <android.support.design.widget.AppBarLayout
+        android:id="@+id/app_bar"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/app_bar_height"
+        android:fitsSystemWindows="true"
+        android:theme="@style/AppTheme.AppBarOverlay">
+
+        <android.support.design.widget.CollapsingToolbarLayout
+            android:id="@+id/toolbar_layout"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:fitsSystemWindows="true"
+            app:contentScrim="?attr/colorPrimary"
+            app:layout_scrollFlags="scroll|exitUntilCollapsed">
+
+            <android.support.v7.widget.Toolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:layout_collapseMode="pin"
+                app:popupTheme="@style/AppTheme.PopupOverlay" />
+
+
+
+        </android.support.design.widget.CollapsingToolbarLayout>
+
+    </android.support.design.widget.AppBarLayout>
+
+    <ListView
+        android:id="@+id/peer_list"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/fab_margin"
+        app:layout_anchor="@id/app_bar"
+        app:layout_anchorGravity="bottom|end"
+        app:fabSize="normal"
+        app:srcCompat="@drawable/icon_refresh" />
+
+
+
+</android.support.design.widget.CoordinatorLayout>

app/src/main/res/menu/menu_scrolling.xml

@@ -0,0 +1,10 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context="com.flashwifi.wifip2p.ScrollingActivity">
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="100"
+        android:title="@string/action_settings"
+        app:showAsAction="never" />
+</menu>

app/src/main/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#07daff</color>
+</resources>

app/src/main/res/values/dimens.xml

@@ -0,0 +1,5 @@
+<resources>
+    <dimen name="app_bar_height">180dp</dimen>
+    <dimen name="fab_margin">16dp</dimen>
+    <dimen name="text_margin">16dp</dimen>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,9 @@
+<resources>
+    <string name="app_name">WifiP2P</string>
+    <string name="title_activity_scrolling">ScrollingActivity</string>
+    <string name="action_settings">Settings</string>
+    <string name="wifi_direct">Wifi Direct Chat</string>
+    <string name="remote_service_started">remote_service_started</string>
+    <string name="remote_service_stopped">remote_service_stopped</string>
+    <string name="local_service_label">local_service_label</string>
+</resources>

app/src/main/res/values/styles.xml

@@ -0,0 +1,20 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+
+</resources>

app/src/test/java/com/flashwifi/wifip2p/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.flashwifi.wifip2p;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() throws Exception {
+        assertEquals(4, 2 + 2);
+    }
+}

build.gradle

@@ -0,0 +1,23 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.3.3'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

gradle.properties

@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Dec 28 18:55:35 CET 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip

gradlew

@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

gradlew.bat

@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+include ':app'