当我们开发时，为了提高用户的体验，常常要监测手机的网络状态，当手机处于无网状态时，我们会做一些相应的处理或者引导用户去打开网路，以下是我总结的一些经验，不足之处，还请谅解，如果有错误的地方，欢迎拍砖.（做了快两年的Android了，总觉得要做点什么，要不然感觉自己都在虚度了）
首先我们得自定义一个NetStateReceiver 继承extends BroadcastReceiver
public class NetStateReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { boolean isNet = NetworkUtil.isConnected(); if (isNet) { EventBus.getDefault().post(0, ConstantValue.Net_open); }else EventBus.getDefault().post(1, ConstantValue.Net_open); }} 这里我用的是org.simple.eventbus.EventBus 框架来更新事件，如果大家不熟悉可以使用广播，或者其他自己熟悉的方式：0代表现在网络是打开的，1代表没打开当然我们还得在配置文件里面单独注册：
当然这里还需注册网络操作权限：
当监测到没网时，我们可能需要引导用户去打开网络：
/* * 打开设置网络界面 * */ public static void setNetworkMethod(final Context context){ //提示对话框 AlertDialog.Builder builder=new AlertDialog.Builder(context); builder.setTitle("网络设置提示").setMessage("网络连接不可用,是否进行设置?").setPositiveButton("设置", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Intent intent=null; //判断手机系统的版本 即API大于10 就是3.0或以上版本 if(android.os.Build.VERSION.SDK_INT>10){ intent = new Intent(android.provider.Settings.ACTION_SETTINGS); }else{ intent=new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS); // intent = new Intent(); // ComponentName compOnent= new ComponentName("com.android.settings","com.android.settings.WirelessSettings"); // intent.setComponent(component); // intent.setAction("android.intent.action.VIEW"); } context.startActivity(intent); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.dismiss(); } }).show(); }
当然一般我们打开一个activity的时候，可能首先会去监测是否有网：
boolean isNet = NetworkUtil.isConnected();if (!isNet) { NetworkUtil.getInstance().setNetworkMethod(this);} 以下是NetworkUtil代码： package com.jxhdc.aspire.jxhdcandroid.common.utils;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;import com.jxhdc.aspire.jxhdcandroid.JXHDCApplication;import org.simple.eventbus.EventBus;/** * 网络工具类 * Created by chenziqiang on 16/4/21. */ public class NetworkUtil { private volatile static NetworkUtil instance; public NetworkUtil(){ instance=this; } public synchronized static NetworkUtil getInstance() { if (instance == null) { synchronized (NetworkUtil.class) { instance = instance == null ? new NetworkUtil() : instance; } } return instance; } public static boolean isConnected() { Context cOntext= JXHDCApplication.getContext(); ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeInfo = manager.getActiveNetworkInfo(); if (activeInfo != null) { return activeInfo.isConnected(); } return false; }// public static boolean isNetConnected() {// ConnectivityManager cm = (ConnectivityManager) JXHDCApplication.getContext().getSystemService(Context.CONNECTIVITY_SERVICE);// NetworkInfo info = cm != null ? cm.getActiveNetworkInfo() : null;// return info != null // } public static boolean isWifiConnected() { boolean isCOnnected= false; try { ConnectivityManager cm = (ConnectivityManager) JXHDCApplication.getContext().getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo info = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI); isCOnnected= info.isConnected(); } catch (Exception e) { e.printStackTrace(); } return isConnected; } public static boolean isMobileConnected() { boolean isCOnnected= false; try { ConnectivityManager cm = (ConnectivityManager) JXHDCApplication.getContext().getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo info = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); isCOnnected= info.isConnected(); } catch (Exception e) { e.printStackTrace(); } return isConnected; } /* * 打开设置网络界面 * */ AlertDialog.Builder builder=null; public void setNetworkMethod(final Context context){ if (builder!=null){ builder.setCancelable(true); } //提示对话框 builder=new AlertDialog.Builder(context); builder.setTitle("网络设置提示").setMessage("网络连接不可用,是否进行设置?").setPositiveButton("设置", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Intent intent=null; //判断手机系统的版本 即API大于10 就是3.0或以上版本 if(android.os.Build.VERSION.SDK_INT>10){ intent = new Intent(android.provider.Settings.ACTION_SETTINGS); }else{ intent=new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);// intent = new Intent();// ComponentName compOnent= new ComponentName("com.android.settings","com.android.settings.WirelessSettings");// intent.setComponent(component);// intent.setAction("android.intent.action.VIEW"); } context.startActivity(intent); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.dismiss(); } }).show(); } /** * 网络异常提示界面 */ public void setNetworkAnomaly(final Context context){ //提示对话框 AlertDialog.Builder builder=new AlertDialog.Builder(context); builder.setTitle("网络异常提示").setMessage("网络连接异常，请再试一次?").setPositiveButton("是", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { EventBus.getDefault().post("0","request_data"); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.dismiss(); } }).show(); }} 【文章转自高防服务器 http://www.558idc.com 复制请保留原URL】