Приложение Сбой при подключении WiFi Direct

Question

Я разрабатывал приложение WiFi Direct. Оказывается, это приложение рушится, когда я включаю WiFi Direct и запускаю программу. Вот мой код

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH) 
    public class MainActivity extends Activity { 

//For WiFi Direct 
private WifiP2pManager mManager; 
private Channel mChannel; 
private IntentFilter mIntentFilter= new IntentFilter(); 
private boolean isWifiP2pEnabled = false; 
private ArrayAdapter aa; 

public void setIsWifiP2pEnabled(boolean isWifiP2pEnabled) { 
    isWifiP2pEnabled=isWifiP2pEnabled; 

} 
//End Wifi Direct 
private Networking_input net; 
private Networking_output net_out; 
private Networking_files net_file; 
private EditText inputData; 
private Button sendParameters; 
private Button peersSearch; 
private ListView listview; 
private TextView displayText; 
private List<WifiP2pDevice> deviceList = new ArrayList<WifiP2pDevice>(); 



@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    //For Wifi Direct 
    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); 
    //End Wifi Direct 

    inputData= (EditText) findViewById(R.id.editText1); 
    sendParameters=(Button) findViewById(R.id.button1); 
    peersSearch=(Button) findViewById(R.id.button2); 
    displayText=(TextView) findViewById(R.id.textView1); 
    listview=(ListView) findViewById(R.id.listView1); 
    aa=new ArrayAdapter<WifiP2pDevice>(this, android.R.layout.simple_list_item_1, deviceList); 

    listview.setAdapter(aa); 

    //Begin for WiFi Direct 
    mManager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE); 
    mChannel = mManager.initialize(this, getMainLooper(), null); 
    //End for WiFi Direct 


    peersSearch.setOnClickListener(new OnClickListener() {   
     @Override 
     public void onClick(View v) 
     { 
      discoverPeers(); 
     } 
    }); 

    listview.setOnItemClickListener(new OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> arg0, View arg1, int index,long arg3) 
     { 
      connectTo(deviceList.get(index));    
     } 

    });  
    sendParameters.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 

      net_out= new Networking_output(); 
      String input=inputData.getText().toString(); 
      net_out.execute(input); 
      net_file=new Networking_files(); 
      net_file.execute(); 

     } 
    }); 

} 

BroadcastReceiver p2pStatusReceiver= new BroadcastReceiver() 
{ 
    @Override 
    public void onReceive(Context context, Intent intent) { 
      int state = intent.getIntExtra(
      WifiP2pManager.EXTRA_WIFI_STATE, 
      WifiP2pManager.WIFI_P2P_STATE_DISABLED); 

      switch (state) { 
      case (WifiP2pManager.WIFI_P2P_STATE_ENABLED): 
       peersSearch.setEnabled(true); 
       break; 
      default: 
       peersSearch.setEnabled(false); 
      } 
     } 
}; 

private void discoverPeers() 
{ 
    mManager.discoverPeers(mChannel, new WifiP2pManager.ActionListener() { 

     @Override 
     public void onSuccess() { 
      Toast toast=Toast.makeText(MainActivity.this, "Discovery initiated", Toast.LENGTH_SHORT); 
      toast.show(); 

     } 

     @Override 
     public void onFailure(int reason) { 
      Toast toast=Toast.makeText(MainActivity.this, "Discovery failed", Toast.LENGTH_SHORT); 
      toast.show(); 

     } 
    }); 
} 

BroadcastReceiver peerDiscoveryReceiver = new BroadcastReceiver() 
{ 
    @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH) 
    @Override 
    public void onReceive(Context context, Intent intent) 
    { 
     mManager.requestPeers(mChannel, new PeerListListener() { 

      @Override 
      public void onPeersAvailable(WifiP2pDeviceList peers) { 
       deviceList.clear(); 
       deviceList.addAll(peers.getDeviceList()); 
       aa.notifyDataSetChanged(); 

      } 
     }); 
    } 
}; 


@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH) 
private void connectTo(final WifiP2pDevice device) 
{ 
    WifiP2pConfig config=new WifiP2pConfig(); 
    config.deviceAddress=device.deviceAddress; 

    mManager.connect(mChannel, config, new ActionListener() { 

     @Override 
     public void onSuccess() { 
      Toast toast=Toast.makeText(MainActivity.this, "Connected to " + device.deviceAddress.toString() , Toast.LENGTH_SHORT); 
      toast.show(); 
     } 

     @Override 
     public void onFailure(int reason) { 
      Toast toast=Toast.makeText(MainActivity.this, "Connection Failed" , Toast.LENGTH_SHORT); 
      toast.show(); 
     } 
    }); 
} 

BroadcastReceiver connectionChangedReceiver = new BroadcastReceiver() { 
     @Override 
     public void onReceive(Context context, Intent intent) 
     { 
      String ExtraKey=WifiP2pManager.EXTRA_NETWORK_INFO; 
      NetworkInfo networkinfo= (NetworkInfo)intent.getParcelableExtra(ExtraKey); 
      if(networkinfo.isConnected()) 
      { 
       mManager.requestConnectionInfo(mChannel, new ConnectionInfoListener() {      
        public void onConnectionInfoAvailable(WifiP2pInfo info) { 
         if(info.groupFormed) 
         { 
          if(info.isGroupOwner) 
          { 
           Toast toast=Toast.makeText(MainActivity.this, "I am Group Owner" , Toast.LENGTH_SHORT); 
           toast.show(); 
          } 
          else if(info.groupFormed) 
          { 
           Toast toast=Toast.makeText(MainActivity.this, "I am Group Client" , Toast.LENGTH_SHORT); 
           toast.show(); 
          } 
         } 


        } 
       }); 
      }   

     } 
}; 


@Override 
public void onResume() 
{ 
     super.onResume(); 
     registerReceiver(peerDiscoveryReceiver, mIntentFilter); 
     registerReceiver(connectionChangedReceiver, mIntentFilter); 
     registerReceiver(p2pStatusReceiver, mIntentFilter); 
} 



@Override 
public void onPause() 
{ 
     super.onPause(); 
     unregisterReceiver(peerDiscoveryReceiver); 
     unregisterReceiver(connectionChangedReceiver); 
     unregisterReceiver(p2pStatusReceiver); 
} 

Я взял код из http://kurser.iha.dk/eit/itsmap/basic/MEIER/Professional%20Android%204%20All%20downloads/9781118102275%20PA4AD/Code%20Snippets/Chapter%2016/PA4AD_Ch16_WiFiDirect/src/com/paad/wifidirect/WiFiDirectActivity.java

Заранее благодарим Вас за помощь

UPD файл манифеста

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.androidapp" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="17" /> 
<uses-permission android:name="android.permission.INTERNET"/> 
<uses-permission 
    android:required="true" 
    android:name="android.permission.ACCESS_WIFI_STATE"/> 
<uses-permission 
    android:required="true" 
    android:name="android.permission.CHANGE_WIFI_STATE"/> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.androidapp.MainActivity" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application> 

Answer 1

мая этого помощь вы ..

Я полагаю, вы не дали разрешение на AndroidManifest.xml файл ..