Android监听手机网络变化

手机网络状态发生变化会发送广播，利用广播接收者，监听手机网络变化

效果图

这里写图片描述

注册广播接收者

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="……" >

    ……

    <application
        …… >

        ……

        <!-- 监听网络状态的广播接收者 -->
        <receiver android:name=".receiver.NetworkBroadcastReceiver" >
            <intent-filter>
                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            </intent-filter>
        </receiver>

    </application>
</manifest>

广播接收者

package ……;

import ……;

/**
 * Created by kongqw on 2015/11/23.
 */
public class NetworkBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        try {
            ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mobileInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
            NetworkInfo wifiInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
            //如果无网络连接activeInfo为null
            NetworkInfo activeInfo = manager.getActiveNetworkInfo();

            if (wifiInfo.isConnected()) {
                // wifi 网络
                Log.i("Network", "wifi 网络");
            } else if (mobileInfo.isConnected()) {
                // 手机网络
                Log.i("Network", "手机网络");
            } else if (null == activeInfo) {
                // 没有网络
                Log.i("Network", "没有网络");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}