Android 网络状态实时监听代码实例(一)

其实手机在网络方面的的监听也比较重要，有时候我们必须实时监控这个程序的实时网络状态，android在网络断开与连接的时候都会发出广播，我们通过接收系统的广播就可以实现网络的监听。

1、添加访问网络和获取网络状态的权限

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

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

2、新建一个Application类并继承android.app.Application 申明变量保存网络状态

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									package com.javen.application;

									import com.javen.netbroadcast.NetUtil;

									public class Application extends android.app.Application {

									private static Application mApplication;

									public static int mNetWorkState;

									public static synchronized Application getInstance() {

									return mApplication;

									}

									@Override

									public void onCreate() {

									super.onCreate();

									mApplication = this;

									initData();

									}

									public void initData() {

									mNetWorkState = NetUtil.getNetworkState(this);

									}

									}

3、新建NetBroadcastReceiver类继承BroadcastReceiver 并实现onReceive方法在onReceive方法通知接口完成加载

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									package com.javen.receiver;

									import java.util.ArrayList;

									import com.javen.application.Application;

									import com.javen.netbroadcast.NetUtil;

									import android.content.BroadcastReceiver;

									import android.content.Context;

									import android.content.Intent;

									public class NetBroadcastReceiver extends BroadcastReceiver {

									public static ArrayList<netEventHandler> mListeners = new ArrayList<netEventHandler>();

									private static String NET_CHANGE_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";

									@Override

									public void onReceive(Context context, Intent intent) {

									if (intent.getAction().equals(NET_CHANGE_ACTION)) {

									Application.mNetWorkState = NetUtil.getNetworkState(context);

									if (mListeners.size() > 0)// 通知接口完成加载

									for (netEventHandler handler : mListeners) {

									handler.onNetChange();

									}

									}

									}

									public static abstract interface netEventHandler {

									public abstract void onNetChange();

									}

									}

4、在应该的Activity中实现netEventHandler接口

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									package com.javen.netbroadcast;

									import com.javen.receiver.NetBroadcastReceiver;

									import com.javen.receiver.NetBroadcastReceiver.netEventHandler;

									import com.javen.ui.base.BaseActivity;

									import android.os.Bundle;

									import android.view.Menu;

									public class MainActivity extends BaseActivity implements netEventHandler{

									@Override

									protected void onCreate(Bundle savedInstanceState) {

									super.onCreate(savedInstanceState);

									setContentView(R.layout.activity_main);

									NetBroadcastReceiver.mListeners.add(this);

									}

									@Override

									public boolean onCreateOptionsMenu(Menu menu) {

									// Inflate the menu; this adds items to the action bar if it is present.

									getMenuInflater().inflate(R.menu.main, menu);

									return true;

									}

									@Override

									public void onNetChange() {

									// TODO Auto-generated method stub

									if (NetUtil.getNetworkState(this) == NetUtil.NETWORN_NONE) {

									T.showLong(this, R.string.net_err);

									}else {

									T.showLong(this, "网络可以使用");

									}

									}

									}

5、判断网络的工具类

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									package com.javen.netbroadcast;

									import android.content.Context;

									import android.net.ConnectivityManager;

									import android.net.NetworkInfo.State;

									public class NetUtil {

									public static final int NETWORN_NONE = 0;

									public static final int NETWORN_WIFI = 1;

									public static final int NETWORN_MOBILE = 2;

									public static int getNetworkState(Context context) {

									ConnectivityManager connManager = (ConnectivityManager) context

									.getSystemService(Context.CONNECTIVITY_SERVICE);

									// Wifi

									State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)

									.getState();

									if (state == State.CONNECTED || state == State.CONNECTING) {

									return NETWORN_WIFI;

									}

									// 3G

									state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)

									.getState();

									if (state == State.CONNECTED || state == State.CONNECTING) {

									return NETWORN_MOBILE;

									}

									return NETWORN_NONE;

									}

									}

以上所述是小编给大家介绍的Android 网络状态实时监听代码实例(一)，希望对大家有所帮助！

Android 网络状态实时监听代码实例(一)

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