android 네트워크 연결 상태 확인 절차

 
public boolean isNetworkConnected(Context context) { 
if (context != null) { 
ConnectivityManager mConnectivityManager = (ConnectivityManager) context 
.getSystemService(Context.CONNECTIVITY_SERVICE); 
NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo(); 
if (mNetworkInfo != null) { 
return mNetworkInfo.isAvailable(); 
} 
} 
return false; 
} 

 
public boolean isWifiConnected(Context context) { 
if (context != null) { 
ConnectivityManager mConnectivityManager = (ConnectivityManager) context 
.getSystemService(Context.CONNECTIVITY_SERVICE); 
NetworkInfo mWiFiNetworkInfo = mConnectivityManager 
.getNetworkInfo(ConnectivityManager.TYPE_WIFI); 
if (mWiFiNetworkInfo != null) { 
return mWiFiNetworkInfo.isAvailable(); 
} 
} 
return false; 
} 

 
public boolean isMobileConnected(Context context) { 
if (context != null) { 
ConnectivityManager mConnectivityManager = (ConnectivityManager) context 
.getSystemService(Context.CONNECTIVITY_SERVICE); 
NetworkInfo mMobileNetworkInfo = mConnectivityManager 
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); 
if (mMobileNetworkInfo != null) { 
return mMobileNetworkInfo.isAvailable(); 
} 
} 
return false; 
} 

 
public static int getConnectedType(Context context) { 
if (context != null) { 
ConnectivityManager mConnectivityManager = (ConnectivityManager) context 
.getSystemService(Context.CONNECTIVITY_SERVICE); 
NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo(); 
if (mNetworkInfo != null && mNetworkInfo.isAvailable()) { 
return mNetworkInfo.getType(); 
} 
} 
return -1; 
} 

 
connectionReceiver = new BroadcastReceiver() { 
@Override 
public void onReceive(Context context, Intent intent) { 
ConnectivityManager connectMgr = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE); 
NetworkInfo mobNetInfo = connectMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); 
NetworkInfo wifiNetInfo = connectMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI); 
if (!mobNetInfo.isConnected() && !wifiNetInfo.isConnected()) { 
Log.i(TAG, "unconnect"); 
// unconnect network 
}else { 
// connect network 
} 
} 
}; 

 
final TelephonyManager mTelephonyMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); 
mTelephonyMgr.listen(new PhoneStateListener(){ 
@Override 
public void onDataConnectionStateChanged(int state) { 
switch(state){ 
case TelephonyManager.DATA_DISCONNECTED://  
break; 
case TelephonyManager.DATA_CONNECTING://  
break; 
case TelephonyManager.DATA_CONNECTED://  
break; 
} 
} 
}, PhoneStateListener.LISTEN_DATA_CONNECTION_STATE); 

 
public static boolean isNetworkAvailable(Context context) { 
ConnectivityManager connectivity = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); 
if (connectivity == null) { 
Log.i("NetWorkState", "Unavailabel"); 
return false; 
} else { 
NetworkInfo[] info = connectivity.getAllNetworkInfo(); 
if (info != null) { 
for (int i = 0; i < info.length; i++) { 
if (info[i].getState() == NetworkInfo.State.CONNECTED) { 
Log.i("NetWorkState", "Availabel"); 
return true; 
} 
} 
} 
} 
return false; 
} 

 
@Override 
public void onReceive(Context context, Intent intent) { 
Log.e(TAG, " "); 
boolean success = false; 
//  
ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE); 
// State state = connManager.getActiveNetworkInfo().getState(); 
State state = connManager.getNetworkInfo( 
ConnectivityManager.TYPE_WIFI).getState(); //   
if (State.CONNECTED == state) { //  WIFI  
success = true; 
} 
state = connManager.getNetworkInfo( 
ConnectivityManager.TYPE_MOBILE).getState(); //   
if (State.CONNECTED != state) { //  GPRS  
success = true; 
} 
if (!success) { 
Toast.makeText(LocationMapActivity.this, " ", Toast.LENGTH_LONG).show(); 
} 
} 

 
//  
IntentFilter filter = new IntentFilter(); 
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); 
registerReceiver(mNetworkStateReceiver, filter); 
// Activity onDestroy :' 
unregisterReceiver(mNetworkStateReceiver); //  

 
/** 
* @author sky 
* Email [email protected] 
* QQ:840950105 
*   -1：  1：WIFI 2：wap 3：net  
* @param context 
* @return 
*/ 
public static int getAPNType(Context context){ 
int netType = -1; 
ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); 
if(networkInfo==null){ 
return netType; 
} 
int nType = networkInfo.getType(); 
if(nType==ConnectivityManager.TYPE_MOBILE){ 
Log.e("networkInfo.getExtraInfo()", "networkInfo.getExtraInfo() is "+networkInfo.getExtraInfo()); 
if(networkInfo.getExtraInfo().toLowerCase().equals("cmnet")){ 
netType = CMNET; 
} 
else{ 
netType = CMWAP; 
} 
} 
else if(nType==ConnectivityManager.TYPE_WIFI){ 
netType = WIFI; 
} 
return netType; 
}