安卓监听网络状态改变

来源：互联网发布：2017年网络新词编辑：程序博客网时间：2024/05/19 00:44

利用广播的方式去监听网络状态的变化

Action：

public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";

广播接受者类:

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo.State;import android.util.Log;public class NetworkStateReceiver extends BroadcastReceiver {private final String TAG = "NetworkState";@Overridepublic void onReceive(Context context, Intent intent) {    if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {        //获取手机的连接服务管理器，这里是连接管理器类        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);        State wifiState = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();        State mobileState = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();        if (wifiState != null && mobileState != null && State.CONNECTED != wifiState && State.CONNECTED == mobileState) {            Log.d(TAG, "移动网络连接成功");        } else if (wifiState != null && mobileState != null && State.CONNECTED == wifiState && State.CONNECTED != mobileState) {            Log.d(TAG, "WIFI网络连接成功");        } else if (wifiState != null && mobileState != null && State.CONNECTED != wifiState && State.CONNECTED != mobileState) {            Log.d(TAG, "手机无网络");        }    }}

}

注册广播

NetworkStateReceiver receiver = new NetworkStateReceiver();IntentFilter filter = new IntentFilter();filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);registerReceiver(receiver, filter);Log.d(TAG, "注册广播");

取消广播

unregisterReceiver(receiver);Log.d(TAG, "取消注册");

然后还有一个问题，在网络断开的时候会监听到两次无网络，后续有时间解决一下。

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