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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