Android监听手机网络变化

效果图

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();

        }

    }

}