意向行動

Question

我需要接受網絡操作，如連接，斷開等我使用用於此目的的廣播接收器的網絡廣播。誰能告訴我，我需要它的意圖行動，以捕獲網絡事件，現在按我搜索互聯網上我使用android.net.ConnectivityManager.CONNECTIVITY_ACTION。

這裏是我的廣播接收器類：

import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 

public class NetworkStateReceiver extends BroadcastReceiver { 

@Override 
public void onReceive(Context context, Intent intent) { 
    // TODO Auto-generated method stub 


    if (intent.getAction().equals(
      android.net.ConnectivityManager.CONNECTIVITY_ACTION)) { 

     // do something.. 
    } 
} 
} 

，我還增加了允許訪問網絡狀態：

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

這裏是如何我已經宣佈這個類清單文件

<receiver class=".NetworkStateReceiver" android:name=".NetworkStateReceiver"> 
    <intent-filter> 
      <action android:name="android.net.ConnectivityManager.CONNECTIVITY_ACTION" /> 
    </intent-filter> 
</receiver> 

請建議我在正確的意圖行動，如果我錯了，或有任何其他方式捕捉網絡事件。

Answer 1

這裏有一個工作示例：

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

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

。

public class ConnectivityReceiver extends BroadcastReceiver { 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     Log.d(ConnectivityReceiver.class.getSimpleName(), "action: " 
       + intent.getAction()); 
    } 

} 

Answer 2

yanchenko的答案是非常有用的，我只是簡化了一點點獲得連接狀態，請如下修改的onReceive：

public class ConnectivityReceiver extends BroadcastReceiver { 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     Log.d(ConnectivityReceiver.class.getSimpleName(), "action: " 
       + intent.getAction()); 
     MyConstants.IS_NETWORK_AVAILABLE = haveNetworkConnection(context); 
     //IS_NETWORK_AVAILABLE this variable in your activities to check networkavailability. 

    } 


    private boolean haveNetworkConnection(Context context) { 
     boolean haveConnectedWifi = false; 
     boolean haveConnectedMobile = false; 

     ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
     NetworkInfo[] netInfo = cm.getAllNetworkInfo(); 
     for (NetworkInfo ni : netInfo) { 
      if (ni.getTypeName().equalsIgnoreCase("WIFI")) 
       if (ni.isConnected()) 
        haveConnectedWifi = true; 
      if (ni.getTypeName().equalsIgnoreCase("MOBILE")) 
       if (ni.isConnected()) 
        haveConnectedMobile = true; 
     } 
     return haveConnectedWifi || haveConnectedMobile;  
    } 
}