Android判断网络状态

package com.ch.services;

import com.ch.utils.NetWorkUtils;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
//这是后台 Service
public class CopyOfOffLineService extends Service{

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
//new一个新类 判断网络
NetWorkUtils netUtils = new NetWorkUtils(getApplicationContext());
int i = netUtils.netWorkType();//获得当前网络状态类型
//1.wifi 2.移动网路 3.没网
if(i == 1){
//请求数据，并保存
Log.i("TAG", "开始离线下载......");

}else if(i == 2){
Log.i("TAG", "提示是移动数据，是否继续下载......");
}else{
Log.i("TAG", "没网，不需要下载......");
}

return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub

return null;
}

}

package com.ch.utils;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;
import android.util.Log;

public class NetWorkUtils {
Context mcontext;
public NetWorkUtils(Context mcontext){
this.mcontext = mcontext;
}

public int netWorkType(){
//获取管理
ConnectivityManager mConnectivity = (ConnectivityManager)mcontext.getSystemService(Context.CONNECTIVITY_SERVICE);
TelephonyManager mTelephony = (TelephonyManager)mcontext.getSystemService(Context.TELEPHONY_SERVICE);
//检查网络连接
NetworkInfo info = mConnectivity.getActiveNetworkInfo();

if (info == null || !mConnectivity.getBackgroundDataSetting()) {
Log.i("TAG","网络未连接.....");
return 3;
}

int netType = info.getType();
int netSubtype = info.getSubtype();
Log.i("TAG",netType+",,"+netSubtype+",,"+mTelephony.isNetworkRoaming());
if (netType == ConnectivityManager.TYPE_WIFI) {  //WIFI
Log.i("TAG","wifi连接.....");
return 1;
} else if (netType == ConnectivityManager.TYPE_MOBILE && netSubtype == TelephonyManager.NETWORK_TYPE_UMTS && !mTelephony.isNetworkRoaming()) {   //MOBILE
Log.i("TAG","移动数据连接.....");
return 2;
}
return 3;
}
}