我尝试注册一个Wifi BroadcastReceiver以获取WiFi状态,当它改变.但到目前为止,我没有收到广播的运气.
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<receiver android:name=".WifiReceiver" >
<intent-filter>
<action android:name="android.net.wifi.WifiManager.WIFI_STATE_CHANGED_ACTION" />
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>
//activity declaration here...
</application>
你们知道如何在清单中注册BraodcastReceiver？
我不想在活动中注册,因为当WiFi状态发生变化时,我想监控wifi,无论我的应用程序是否正在运行.
这是我的BroadcastReceiver类：
public class WifiReceiver extends BroadcastReceiver {
private final String TAG = "WifiReceiver";
@Override
public void onReceive(Context context,Intent intent) {
int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,WifiManager.WIFI_STATE_UNKNOWN);
String wifiStateText = "No State";
switch (wifiState) {
case WifiManager.WIFI_STATE_DISABLING:
wifiStateText = "WIFI_STATE_DISABLING";
break;
case WifiManager.WIFI_STATE_DISABLED:
wifiStateText = "WIFI_STATE_DISABLED";
break;
case WifiManager.WIFI_STATE_ENABLING:
wifiStateText = "WIFI_STATE_ENABLING";
break;
case WifiManager.WIFI_STATE_ENABLED:
wifiStateText = "WIFI_STATE_ENABLED";
break;
case WifiManager.WIFI_STATE_UNKNOWN:
wifiStateText = "WIFI_STATE_UNKNOWN";
break;
default:
break;
}
MyLog.d(TAG,"onReceive Broadcast > WiFiState: " + wifiStateText);
MyLog.d(TAG,"onReceive Broadcast > Time: " + new Date());
}
}
我真的希望得到一些帮助.提前致谢.
解决方法
清单中的接收者应该看起来像这样
<receiver android:name=".WifiReceiver" >
<intent-filter>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
还可能需要以下许可
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
