wifi连接改变广播接收机重复多次

Question

我有以下广播接收机。

public class TestNetworkReceiver extends BroadcastReceiver { 

    @Override 
    public void onReceive(Context context, Intent intent) { 

     String TAG = "TEST:"; 

     if (intent.getAction().equals("android.net.wifi.WIFI_STATE_CHANGED")) { 

      Log.i(TAG, "Wifi toggled"); 

     } else if (intent.getAction().equals("android.net.conn.CONNECTIVITY_CHANGE")) { 

      Log.i(TAG, "Network connection changed"); 

      ConnectivityManager cm = (ConnectivityManager) context 
        .getSystemService(Context.CONNECTIVITY_SERVICE); 

      NetworkInfo networkInfo = cm.getActiveNetworkInfo(); 

      if (networkInfo != null && networkInfo.isConnected()) { 

       Log.i(TAG, "Network connecion is:" + networkInfo.getTypeName()); 

       Log.i(TAG, "Detail:"+networkInfo.isFailover()); 
      } 
     } 
    } 
} 

当我打开和关闭的WiFi

I/TEST:﹕ Wifi toggled 
I/TEST:﹕ Network connection changed 
I/TEST:﹕ Network connecion is:WIFI 
I/TEST:﹕ Detail:false 
I/TEST:﹕ Network connection changed 
I/TEST:﹕ Network connecion is:WIFI 
I/TEST:﹕ Detail:false 
I/TEST:﹕ Network connection changed 
I/TEST:﹕ Network connecion is:WIFI 
I/TEST:﹕ Detail:false 

I/TEST:﹕ Network connection changed 
I/TEST:﹕ Network connecion is:mobile 
I/TEST:﹕ Detail:true 
I/TEST:﹕ Network connection changed 
I/TEST:﹕ Network connecion is:mobile 
I/TEST:﹕ Detail:true 

我试图做到的，是要知道什么时候该连接出现“移动”或“WiFi”的，是活跃，但只有一次。否则它会运行我的例程3或4次。我试过改变networkInfo.whatever（），但是一切重复3或4或更多或更少的次数。有没有一种方法可以让我知道连接已经改变，而且它只是接收机某处的一次？

Answer 1

你可以试试这个

public class TestNetworkReceiver extends BroadcastReceiver { 
    public static boolean firstTime = true; 

    @Override 
    public void onReceive(Context context, Intent intent) { 

     String TAG = "TEST:"; 

     if (firstTime) { 
      firstTime = false; 
      //do stuff 
     } 
    } 
} 

可能不是最elegand方式，但它确实在招

Answer 2

广播[CONNECTIVITY_ACTION]在少数设备上似乎很粘，因此当您注册接收器时，它会立即使用最近发送的广播调用onReceive（）。

因此，建议您需要对清单上的接收器进行静态声明。

这是我用：

@Override 
protected void onResume() { 
    super.onResume(); 
    setMyReceiverStayus(PackageManager.COMPONENT_ENABLED_STATE_ENABLED); 
} 

@Override 
protected void onPause() { 
    super.onPause(); 
    setMyReceiverStayus(PackageManager.COMPONENT_ENABLED_STATE_DISABLED); 
} 


private void setMyReceiverStayus(int receiverState) { 
    ComponentName receiver = new ComponentName(this, MyReceiver.class); 
    PackageManager pm = this.getPackageManager(); 
    pm.setComponentEnabledSetting(receiver, receiverState,  
    PackageManager.DONT_KILL_APP); 
} 

AndroidManifest.xml中

<receiver android:name="com.example.receiver.MyReceiver"> 
    <intent-filter> 
    <action android:name="android.net.conn.CONNECTIVITY_CHANGE" /> 
    </intent-filter> 
</receiver> 

Answer 3

public void onReceive(Context context, Intent intent) { 
    ConnectivityManager cm = (ConnectivityManager) 
    context.getSystemService(Context.CONNECTIVITY_SERVICE); 

     NetworkInfo info = cm.getActiveNetworkInfo(); 
     if (info != null) { 
      if (info.isConnected()) { 
       // you got a connection! tell your user! 
       Log.i("Post", "Connected"); 

      } 
     } 
    } 

将其添加到清单

<receiver android:name="packageName.ConnectivityDetector_Receiver" > 
     <intent-filter> 
      <action android:name="android.net.conn.CONNECTIVITY_CHANGE" /> 
     </intent-filter> 
    </receiver> 

试试这个