android 监听网络连接状态的改变

最新推荐文章于 2023-10-11 13:38:09 发布

ManLikeTheWind

最新推荐文章于 2023-10-11 13:38:09 发布

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分类专栏：广播Broadcast

本文链接：https://blog.youkuaiyun.com/a2241076850/article/details/62218443

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本文介绍如何通过自定义BroadcastReceiver监听网络状态变化，包括移动网络和Wi-Fi，并在AndroidManifest.xml中配置必要的权限。

======================================================== 动态创建广播 ================

BroadcastReceiver

public class NetWorkChangeReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
			// TODO Auto-generated method stub
			//Toast.makeText(context, intent.getAction(), 1).show();
			ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mobileInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
			NetworkInfo wifiInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
			NetworkInfo activeInfo = manager.getActiveNetworkInfo();
			
			MyLog.e(NetWorkChangeReceiver.class.getSimpleName(), activeInfo==null?"null":"不为空");
			if (null!=activeInfo) {
				Utils.toast(context,
								"mobile:"+mobileInfo.isConnected()+"\n"
								+"wifi:"+wifiInfo.isConnected()+"\n"
								+"netIsAvaliable:"+activeInfo.isAvailable()+"\n"
								+"active:"+activeInfo.getTypeName());
			}else {
				
				Utils.toast(context,"mobile:"+mobileInfo.isConnected()+"\n"
									+"wifi:"+wifiInfo.isConnected());
			}
			

		}
	}

在清单文件中注册 BroadcastReceiver

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

要读取网络状态记得在清单文件中要加权限

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

======================================================== 动态创建广播 ================

要读取网络状态记得在清单文件中要加权限

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

	
	private void unRegistRceiver(){

		afContext.unregisterReceiver(nwcReceiver);
	}

	private void registMyReceiver() {
		// 实例化过滤器；
		intentFilter = new IntentFilter();
		// 添加过滤的Action值； 这个频率是：飞行模式接收器频率。不能发送手机设定的频率
		// intentFilter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
		intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");
		// 实例化广播监听器；
		nwcReceiver = new NetWorkChangeReceiver();
		// 将广播监听器和过滤器注册在一起；
		afContext.registerReceiver(nwcReceiver, intentFilter);

	}

	public class NetWorkChangeReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
			// TODO Auto-generated method stub
			//Toast.makeText(context, intent.getAction(), 1).show();
			ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mobileInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
			NetworkInfo wifiInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
			NetworkInfo activeInfo = manager.getActiveNetworkInfo();
			
			MyLog.e(NetWorkChangeReceiver.class.getSimpleName(), activeInfo==null?"null":"不为空");
			if (null!=activeInfo) {
				Utils.toast(context,
								"mobile:"+mobileInfo.isConnected()+"\n"
								+"wifi:"+wifiInfo.isConnected()+"\n"
								+"netIsAvaliable:"+activeInfo.isAvailable()+"\n"
								+"active:"+activeInfo.getTypeName());
			}else {
				
				Utils.toast(context,"mobile:"+mobileInfo.isConnected()+"\n"
									+"wifi:"+wifiInfo.isConnected());
			}
			

		}
	}