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Check whether network is available on Android phone

Introduction

In some Android applications, they can be run properly once the network on device is enable. Or, Android developers want to check the network status before proceed. The simple code snippet I will show today is so simple but sometime it will take you a little bit of time to find/research. 

This routine was run and tested as well on Android 2.2 (API 8) 

Using the code

/**
 * Checks whether the network is available on Android device.
 * If the network signal is very low, it will be evaluated as NOT available.
 * This routine will check both MOBILE and WIFI signal.
 * If both of them are in disable status, <code>false</code> will be return absolutely.
 * </p>
 * Return <code>true</code> if the network is available. Otherwise, return <code>false</code>.
 * </p>
 * 
 * @param ctx Context.
 * 
 * @return <code>True</code> : the network is available.</br>
 *         <code>False</code>: the network is NOT available.
 */
 public static boolean isNetworkAvailable(Context ctx) {
	ConnectivityManager connMgr = (ConnectivityManager)ctx.getSystemService(Context.CONNECTIVITY_SERVICE);
	if(connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected() ||
		connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnected()){
			return true;
	}
		
	return false;
 } 

History

First release on Dec 30, 2012.


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