Android中判断网络是否可用的代码分享
packagecn.hackcoder.beautyreader.broadcast;
importandroid.content.BroadcastReceiver;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.net.ConnectivityManager;
importandroid.util.Log;
importandroid.widget.Toast;
importcn.hackcoder.beautyreader.activity.base.BaseActivity;
importcn.hackcoder.beautyreader.utils.NetWorkUtils;
publicclassNetWorkStatusReceiverextendsBroadcastReceiver{
publicNetWorkStatusReceiver(){
}
@Override
publicvoidonReceive(Contextcontext,Intentintent){
Stringaction=intent.getAction();
if(action.equals(ConnectivityManager.CONNECTIVITY_ACTION)){
Toast.makeText(context,"networkchanged",Toast.LENGTH_LONG).show();
BaseActivity.isNetWorkConnected=NetWorkUtils.getAPNType(context)>0;
}
}
}
packagecn.hackcoder.beautyreader.utils;
importandroid.content.Context;
importandroid.net.ConnectivityManager;
importandroid.net.NetworkInfo;
importandroid.telephony.TelephonyManager;
/**
*Createdbyhackcoderon15-1-25.
*/
publicclassNetWorkUtils{
/**
*判断是否有网络连接
*@paramcontext
*@return
*/
publicstaticbooleanisNetworkConnected(Contextcontext){
if(context!=null){
ConnectivityManagermConnectivityManager=(ConnectivityManager)context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfomNetworkInfo=mConnectivityManager.getActiveNetworkInfo();
if(mNetworkInfo!=null){
returnmNetworkInfo.isAvailable();
}
}
returnfalse;
}
/**
*判断WIFI网络是否可用
*@paramcontext
*@return
*/
publicstaticbooleanisWifiConnected(Contextcontext){
if(context!=null){
ConnectivityManagermConnectivityManager=(ConnectivityManager)context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfomWiFiNetworkInfo=mConnectivityManager
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if(mWiFiNetworkInfo!=null){
returnmWiFiNetworkInfo.isAvailable();
}
}
returnfalse;
}
/**
*判断MOBILE网络是否可用
*@paramcontext
*@return
*/
publicstaticbooleanisMobileConnected(Contextcontext){
if(context!=null){
ConnectivityManagermConnectivityManager=(ConnectivityManager)context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfomMobileNetworkInfo=mConnectivityManager
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if(mMobileNetworkInfo!=null){
returnmMobileNetworkInfo.isAvailable();
}
}
returnfalse;
}
/**
*获取当前网络连接的类型信息
*@paramcontext
*@return
*/
publicstaticintgetConnectedType(Contextcontext){
if(context!=null){
ConnectivityManagermConnectivityManager=(ConnectivityManager)context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfomNetworkInfo=mConnectivityManager.getActiveNetworkInfo();
if(mNetworkInfo!=null&&mNetworkInfo.isAvailable()){
returnmNetworkInfo.getType();
}
}
return-1;
}
/**
*获取当前的网络状态：没有网络0：WIFI网络1：3G网络2：2G网络3
*
*@paramcontext
*@return
*/
publicstaticintgetAPNType(Contextcontext){
intnetType=0;
ConnectivityManagerconnMgr=(ConnectivityManager)context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfonetworkInfo=connMgr.getActiveNetworkInfo();
if(networkInfo==null){
returnnetType;
}
intnType=networkInfo.getType();
if(nType==ConnectivityManager.TYPE_WIFI){
netType=1;//wifi
}elseif(nType==ConnectivityManager.TYPE_MOBILE){
intnSubType=networkInfo.getSubtype();
TelephonyManagermTelephony=(TelephonyManager)context
.getSystemService(Context.TELEPHONY_SERVICE);
if(nSubType==TelephonyManager.NETWORK_TYPE_UMTS
&&!mTelephony.isNetworkRoaming()){
netType=2;//3G
}else{
netType=3;//2G
}
}
returnnetType;
}
}
注册：
<receiver android:name=".broadcast.NetWorkStatusReceiver" android:enabled="true" android:exported="true"> <intent-filter> <actionandroid:name="android.net.conn.CONNECTIVITY_CHANGE"/> </intent-filter> </receiver>