如何檢測Android應用程序，當它檢測到WiFi

Question

我想我的應用程序來檢測連接的WiFi。

例如，我想知道應用程序如何連接到WiFi並告訴我它已經連接。

Answer 1

public class WiFiChangeBroadcastReceiver extends BroadcastReceiver { 

    private String LOGTAG = getClass().getSimpleName(); 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     Log.d(LOGTAG, "WiFi Status Changed"); 
     if (intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) { 
      NetworkInfo networkInfo = intent 
        .getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO); 
      if (networkInfo.isConnected()) { 
       Log.d(LOGTAG, 
         "Wifi is connected: " + String.valueOf(networkInfo)); 
      } 
     } 
    } 
} 

Android清單：

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