Android实时监听网络状态（1）

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

<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

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

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

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

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;
    }
}

不要让昨天的沮丧让今天的梦想黯然失色成功的人总是修改方法而不修改目标微信公众号：javenlife

标签: Android

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posted @ 2014-06-05 17:01 智慧云端日记阅读(6092) 评论(3) 编辑收藏

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#1楼 2014-12-09 15:44 雪雨潇潇

不错，正需要呢

支持(0)反对(0)

#2楼 2015-11-25 14:29 Rising_Sun

楼主，你确定代码没有问题吗？

#3楼 2015-11-25 14:45 Rising_Sun

@楼主
文章中应该告诉大家，在AndroidManifest.xml 文件中注册广播

<receiver android:name=".NetBroadcastReceiver">
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>

Android实时监听网络状态

Android实时监听网络状态（1）

Android实时监听网络状态（2）