Simple class to control connection detection. Just call `isConnected()` with the Context, and an optional URL to ping.

ConnectUtils.java

package com.zackehh.example;

import java.net.URI;

import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

/**
 * Simple utilities to check connection to the Internet. Can check for a WiFi
 * connection if run from a UI thread, but can be used to ping a site if
 * run from a separate thread. Just add a URL string to the isConnected() call.
 * 
 * @author Isaac Whitfield
 * @version 30/08/2013
 */
public class ConnectUtils {

	public static boolean isConnected(Context parent){
		if(!checkNetwork(parent)){
			return false;
		}
		return true;
	}
	
	public static boolean isConnected(Context parent, String url){
		if(!checkNetwork(parent)){
			return false;
		}
		if(!checkConnection(url)){
			return false;
		}
		return true;
	}

	private static boolean checkNetwork(Context parent){
		ConnectivityManager conMgr = (ConnectivityManager)parent.getSystemService(Context.CONNECTIVITY_SERVICE);
		if(conMgr.getActiveNetworkInfo() != null){
			NetworkInfo activeInfo = conMgr.getActiveNetworkInfo();
			if(!activeInfo.isConnected() || !activeInfo.isAvailable()){
				return false;
			}
			return true;
		}
		return false;
	}

	private static boolean checkConnection(String url){
		try {
			HttpGet requestTest = new HttpGet(new URI(url));
			HttpParams params = new BasicHttpParams();
			HttpConnectionParams.setConnectionTimeout(params, 10000);
			DefaultHttpClient client = new DefaultHttpClient(params);
			client.execute(requestTest);
			return true;
		} catch (Exception e){
			e.printStackTrace();
		}
		return false;
	}
}