Android 如何使用intentfilter和broadCastReceiver检查WiFi连接?
如何使用BroadCastReceiver检查当前是否建立了wifi连接 我尝试了一些示例,但我不知道应该使用哪个intentFilter 请提供一个示例menifest文件:-Android 如何使用intentfilter和broadCastReceiver检查WiFi连接?,android,broadcastreceiver,Android,Broadcastreceiver,如何使用BroadCastReceiver检查当前是否建立了wifi连接 我尝试了一些示例,但我不知道应该使用哪个intentFilter 请提供一个示例menifest文件:- <receiver android:name="com.ideal.log.activitymaster.NetworkChangeReceiver" android:enabled="true" > <intent-filter>
<receiver
android:name="com.ideal.log.activitymaster.NetworkChangeReceiver"
android:enabled="true" >
<intent-filter>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
我希望这会有帮助
--更新---
也可以通过编程方式注册接收机。
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好的,但是如何通过编程重新输入接收器?它是可以接受的吗?
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class NetworkChangeReceiver extends BroadcastReceiver {
@Override
public void onReceive(final Context context, final Intent intent) {
String status = getConnectivityStatusString(context);
Toast.makeText(context, status, Toast.LENGTH_LONG).show();
}
public static String getConnectivityStatusString(Context context) {
int conn = NetworkUtil.getConnectivityStatus(context);
String status = null;
if (conn == NetworkUtil.TYPE_WIFI) {
status = "Wifi enabled";
} else if (conn == NetworkUtil.TYPE_MOBILE) {
status = "Mobile data enabled";
} else if (conn == NetworkUtil.TYPE_NOT_CONNECTED) {
status = "Not connected to Internet";
}
return status;
}
public static int TYPE_WIFI = 1;
public static int TYPE_MOBILE = 2;
public static int TYPE_NOT_CONNECTED = 0;
public static int getConnectivityStatus(Context context) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
if (null != activeNetwork) {
if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
return TYPE_WIFI;
if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
return TYPE_MOBILE;
}
return TYPE_NOT_CONNECTED;
}
}
registerReceiver(receiver, new IntentFilter(
"android.net.wifi.WIFI_STATE_CHANGED"));
NetworkChangeReceiver receiver = new NetworkChangeReceiver();
@Override
protected void onDestroy() {
unregisterReceiver(receiver);
super.onDestroy();
}