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; } }