android 判断网络是否连接

package com.liucanwen.baidulocation.util;import android.app.Activity;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.widget.Toast;public class NetworkStatus {    public boolean netStatus = false;    /**     * @param args     */    /*public NetworkStatus(Context context) {        try {            ConnectivityManager connectManager = (ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo activeNetworkInfo = connectManager                    .getActiveNetworkInfo();            if (activeNetworkInfo != null) {                if (activeNetworkInfo.isAvailable()                        && activeNetworkInfo.isConnected()) {                    netStatus = true;                }            }        } catch (Exception e) {            e.printStackTrace();        }    }*/    public NetworkStatus(Context context) {    ConnectivityManager con=(ConnectivityManager)context.getSystemService(Activity.CONNECTIVITY_SERVICE);      boolean wifi=con.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();      boolean internet=con.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();      if(internet){          //执行相关操作          netStatus=true;        Toast.makeText(context,                  "当前移动网络已连接！", Toast.LENGTH_LONG)                  .show();      }else if(wifi){         netStatus=true;        Toast.makeText(context,                  "当前WIFI已连接", Toast.LENGTH_LONG)                  .show();      } else    {        Toast.makeText(context,                   "亲，网络连了么？", Toast.LENGTH_LONG)                  .show();     }}}/* * 另外需要权限 <uses-permission * android:name="android.permission.ACCESS_NETWORK_STATE" /> */
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