安卓实时监听网络变化

来源：互联网发布：孙侨潞淘宝店叫什么编辑：程序博客网时间：2024/05/30 04:44

思路：使用长驻型广播注册广播接收器，重写BroadcastReceiver的onReceive方法对网络状态的变化做相应处理

1、AndroidManifest里注册广播接收器
这里写图片描述

2、重写广播接收器继承自BroadcastReceiver

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.wifi.WifiManager;import android.os.Parcelable;import android.util.Log;import android.widget.Toast;public class NetworkConnectChangedReceiver extends BroadcastReceiver {    private String getConnectionType(int type) {        String connType = "";        if (type == ConnectivityManager.TYPE_MOBILE) {            connType = "3G网络数据";        } else if (type == ConnectivityManager.TYPE_WIFI) {            connType = "WIFI网络";        }        return connType;    }    @Override    public void onReceive(Context context, Intent intent) {        if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(intent.getAction())) {// 监听wifi的打开与关闭，与wifi的连接无关            int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 0);            Log.e("xiaoqiang", "wifiState:" + wifiState);            switch (wifiState) {                case WifiManager.WIFI_STATE_DISABLED:                    break;                case WifiManager.WIFI_STATE_DISABLING:                    break;            }        }        // 监听wifi的连接状态即是否连上了一个有效无线路由        if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(intent.getAction())) {            Parcelable parcelableExtra = intent                    .getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);            if (null != parcelableExtra) {                // 获取联网状态的NetWorkInfo对象                NetworkInfo networkInfo = (NetworkInfo) parcelableExtra;                //获取的State对象则代表着连接成功与否等状态                NetworkInfo.State state = networkInfo.getState();                //判断网络是否已经连接                boolean isConnected = state == NetworkInfo.State.CONNECTED;                Log.e("xiaoqiang", "isConnected:" + isConnected);                if (isConnected) {                } else {                }            }        }        // 监听网络连接，包括wifi和移动数据的打开和关闭,以及连接上可用的连接都会接到监听        if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {            //获取联网状态的NetworkInfo对象            NetworkInfo info = intent                    .getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);            if (info != null) {                //如果当前的网络连接成功并且网络连接可用                if (NetworkInfo.State.CONNECTED == info.getState() && info.isAvailable()) {                    if (info.getType() == ConnectivityManager.TYPE_WIFI                            || info.getType() == ConnectivityManager.TYPE_MOBILE) {                        Log.i("xiaoqiang", getConnectionType(info.getType()) + "连上");                        Toast.makeText(context, getConnectionType(info.getType()) + "连接成功", Toast.LENGTH_SHORT).show();                    }                } else {                    Log.i("xiaoqiang", getConnectionType(info.getType()) + "断开");                    Toast.makeText(context, getConnectionType(info.getType()) + "断开", Toast.LENGTH_SHORT).show();                }            }        }    }}

这样便轻松实现了app对网络状态的实时监听
参考：http://blog.csdn.net/qq_20785431/article/details/51520459

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