Broadcast Receiver监听网络状态aa

动态注册广播接收器实现网络状态监听

最新推荐文章于 2025-04-09 15:32:28 发布

原创最新推荐文章于 2025-04-09 15:32:28 发布 · 406 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#broadcast

笔记专栏收录该内容

3 篇文章

订阅专栏

本文介绍如何在Android应用中动态注册广播接收器，实现监听网络连接状态变化的功能，无需在AndroidManifest.xml中静态注册。通过创建NetworkChangeReceiver类并重写onReceive方法，获取当前网络状态，如断开、移动网络或Wi-Fi连接。

在代码中动态注册，不需要在AndroidManifest.xml里静态注册，静态注册在不打开App的情况下，有可以接收到广播。

public class MainActivity extends Activity {
private IntentFilter intentFilter;
private NetworkChangeReceiver networkChangeReceiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	intentFilter = new IntentFilter();
	intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");//监听网络的状态；网络状态改变就会被调动。
	networkChangeReceiver = new NetworkChangeReceiver();
	registerReceiver(networkChangeReceiver, intentFilter);
}
@Override
protected void onDestroy() {
	super.onDestroy();
	unregisterReceiver(networkChangeReceiver);
	}
}

创建NetworkChangeReceiver类继承BroadcaseReceiver

class NetworkChangeReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//枚举 enum NetworkStatus {DisConnect,Mobile,Wifi}
	ConfigConstant.NetworkStatus status
	=getConnectType();
	switch(status){
		case DisConnect:
	
		break;
		case Mobile:
	
		break;
		case Wifi:
	
		break;
	}
}
/*
*获取网络状态，
*/
private ConfigConstant.NetworkStatus getConnectType() {
    ConnectivityManager connMgr =(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo activeInfo = connMgr.getActiveNetworkInfo();

    if (activeInfo != null && activeInfo.isConnected()){
        if (activeInfo.getType() == ConnectivityManager.TYPE_WIFI)
            return ConfigConstant.NetworkStatus.Wifi;
        else if (activeInfo.getType() == ConnectivityManager.TYPE_MOBILE)
            return ConfigConstant.NetworkStatus.Mobile;
    }
    return ConfigConstant.NetworkStatus.DisConnect;
}

网络状态一旦发生改变，会调用NetworkChangeReceiver 的onReceive（），再去获取网络状态。
aaaa