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前言
用来监控网络变化时的处理，一般用来toast提示或者扩展为其他作用。
效果图
代码分析
NetStateReceiver：网络改变时的广播器
NetUtils：获取网络类型
使用步骤
一、项目组织结构图
注意事项：
1、导入类文件后需要change包名以及重新import R文件路径
2、Values目录下的文件（strings.xml、dimens.xml、colors.xml等），如果项目中存在，则复制里面的内容，不要整个覆盖
二、导入步骤
将netstatus包复制到项目中
在AndroidManifest.xml文件中声明权限以及静态注册NetStateReceiver【注意，路径需要跟实际项目的路径保持一致】
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" ?????????package="com.why.project.netstatereceiverdemo"> ???<!-- ======================NetStateReceiver相关========================== --> ???<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" /> ???<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> ???<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> ???<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> ???<application ???????android:name=".MyApplication" ???????android:allowBackup="true" ???????android:icon="@mipmap/ic_launcher" ???????android:label="@string/app_name" ???????android:supportsRtl="true" ???????android:theme="@style/AppTheme"> ???????<activity android:name=".MainActivity"> ???????????<intent-filter> ???????????????<action android:name="android.intent.action.MAIN"/> ???????????????<category android:name="android.intent.category.LAUNCHER"/> ???????????</intent-filter> ???????</activity> ???????<!-- ===========NetStateReceiver相关=====也可以使用动态注册在MyApplication，不过需要注意注销的触发时机=============== --> ???????<receiver android:name=".utils.netstatus.NetStateReceiver"> ???????????<intent-filter> ???????????????<action android:name="android.net.conn.CONNECTIVITY_CHANGE"/> ???????????????<action android:name="os.net.conn.CONNECTIVITY_CHANGE"/> ???????????</intent-filter> ???????</receiver> ???</application></manifest>
在BaseActivity.java中添加以下代码
package com.why.project.netstatereceiverdemo;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import com.why.project.netstatereceiverdemo.utils.ToastUtil;import com.why.project.netstatereceiverdemo.utils.netstatus.NetChangeObserver;import com.why.project.netstatereceiverdemo.utils.netstatus.NetStateReceiver;import com.why.project.netstatereceiverdemo.utils.netstatus.NetUtils;/** * Created by HaiyuKing * Used Activity基类 */public abstract class BaseActivity extends AppCompatActivity { ???private static final String TAG = "BaseActivity"; ???/*=================网络变化的广播器=====================*/ ???protected NetChangeObserver mNetChangeObserver; ???@Override ???protected void onCreate(Bundle savedInstanceState) { ???????/*=================网络变化的广播器=====================*/ ???????registerNetStateChange();//注册网络变化的广播器 ???????super.onCreate(savedInstanceState); ???} ???protected void onDestroy() { ???????super.onDestroy(); ???????/*=================网络变化的广播器=====================*/ ???????NetStateReceiver.removeRegisterObserver(this.mNetChangeObserver); ???} ???/*==========网络变化的广播器=============*/ ???private void registerNetStateChange() { ???????if (this.mNetChangeObserver == null) { ???????????this.mNetChangeObserver = new NetChangeObserver() { ???????????????public void onNetConnected(NetUtils.NetType netType) { ???????????????????super.onNetConnected(netType); ???????????????????onNetworkConnected(netType); ???????????????????if (NetUtils.isMobileConnected(getApplicationContext())){ ???????????????????????ToastUtil.showShortToast("您当前正在使用运营商网络"); ???????????????????} ???????????????????if(NetUtils.isWifiConnected(getApplicationContext())){ ???????????????????????ToastUtil.showShortToast("您当前正在使用无线网络"); ???????????????????} ???????????????} ???????????????public void onNetDisConnect() { ???????????????????super.onNetDisConnect(); ???????????????????onNetworkDisConnected(); ???????????????????ToastUtil.showShortToast("网络无法连接,请检查网络设置"); ???????????????} ???????????}; ???????????NetStateReceiver.registerObserver(this.mNetChangeObserver);// 声明mNetChangeObserver注册到网络状态广播接收器中 ???????} ???} ???protected abstract void onNetworkConnected(NetUtils.NetType netType); ???protected abstract void onNetworkDisConnected();}本Demo搭配《ToastUtil【简单的Toast封装类】【未自定义Toast的显示风格】》使用
三、使用方法
package com.why.project.netstatereceiverdemo;import android.os.Bundle;import com.why.project.netstatereceiverdemo.utils.netstatus.NetUtils;public class MainActivity extends BaseActivity { ???@Override ???protected void onCreate(Bundle savedInstanceState) { ???????super.onCreate(savedInstanceState); ???????setContentView(R.layout.activity_main); ???} ???@Override ???protected void onNetworkConnected(NetUtils.NetType netType) { ???} ???@Override ???protected void onNetworkDisConnected() { ???}}混淆配置
无
参考资料
http://www.cnblogs.com/renzimu/p/4537954.html
http://www.cnblogs.com/renzimu/p/4537936.html
项目demo下载地址
https://github.com/haiyuKing/NetStateReceiverDemo
NetStateReceiver【监听网路状态变化】
原文地址：http://www.cnblogs.com/whycxb/p/7635299.html