Android Connection Checking

ConnectionChecker.java

import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

/**
 * Checks for a network connection at intervals until connection is found, or timeout has been reached.
 * Result is sent via a message containing {"connected":boolean} sent to passed-in Handler.
 * Log output is sent via a message containing {"log":string} sent to passed-in Handler.
 * Handle one bundle key-value pair per message.
 */
public class ConnectionChecker implements Runnable {
    private ConnectivityManager connManager;
    private Handler handler;
    private int timeBetweenChecks;
    private int timeout;
    private int elapsedTime;

    public ConnectionChecker(ConnectivityManager connManager, Handler handler, int timeBetweenChecks, int timeout) {
        this.connManager = connManager;
        this.handler = handler;
        this.timeBetweenChecks = timeBetweenChecks;
        this.timeout = timeout;
        this.elapsedTime = 0;
    }

    @Override
    public void run() {
        NetworkInfo activeNetworkInfo = connManager.getActiveNetworkInfo();

        // if we detect a connection, send "true" result
        if (activeNetworkInfo != null && activeNetworkInfo.isConnected()) {
            sendResult(true);
        }
        else {
            // otherwise, if waiting to retry will put us past timeout, send "false" result
            if ((elapsedTime + timeBetweenChecks) > timeout) {
                sendResult(false);
            }
            // otherwise we can check again in x seconds
            else {
                sendLog("Retrying network connectivity in "+timeBetweenChecks+" seconds");
                elapsedTime += timeBetweenChecks;
                handler.postDelayed(this, timeBetweenChecks * 1000);
            }
        }
    }

    private void sendResult(boolean connected) {
        Bundle bundle = new Bundle();
        bundle.putBoolean("connected", connected);

        Message message = new Message();
        message.setData(bundle);

        handler.dispatchMessage(message);
    }

    private void sendLog(String log) {
        Bundle bundle = new Bundle();
        bundle.putString("log", log);

        Message message = new Message();
        message.setData(bundle);

        handler.dispatchMessage(message);
    }
}