Avoid button multiple rapid clicks

Question

I have a problem with my app that if the user clicks the button multiple times quickly, then multiple events are generated before even my dialog holding the button disappear

Answer 1

A Handler based throttler from Signal App.

import android.os.Handler;
import android.support.annotation.NonNull;

/**
 * A class that will throttle the number of runnables executed to be at most once every specified
 * interval.
 *
 * Useful for performing actions in response to rapid user input where you want to take action on
 * the initial input but prevent follow-up spam.
 *
 * This is different from a Debouncer in that it will run the first runnable immediately
 * instead of waiting for input to die down.
 *
 * See http://rxmarbles.com/#throttle
 */
public final class Throttler {

    private static final int WHAT = 8675309;

    private final Handler handler;
    private final long    thresholdMs;

    /**
     * @param thresholdMs Only one runnable will be executed via {@link #publish} every
     *                  {@code thresholdMs} milliseconds.
     */
    public Throttler(long thresholdMs) {
        this.handler     = new Handler();
        this.thresholdMs = thresholdMs;
    }

    public void publish(@NonNull Runnable runnable) {
        if (handler.hasMessages(WHAT)) {
            return;
        }

        runnable.run();
        handler.sendMessageDelayed(handler.obtainMessage(WHAT), thresholdMs);
    }

    public void clear() {
        handler.removeCallbacksAndMessages(null);
    }
}

Example usage:

throttler.publish(() -> Log.d("TAG", "Example"));

Example usage in an OnClickListener:

view.setOnClickListener(v -> throttler.publish(() -> Log.d("TAG", "Example")));

Example Kt usage:

view.setOnClickListener {
    throttler.publish {
        Log.d("TAG", "Example")
    }
}

Or with an extension:

fun View.setThrottledOnClickListener(throttler: Throttler, function: () -> Unit) {
    throttler.publish(function)
}

Then example usage:

view.setThrottledOnClickListener(throttler) {
    Log.d("TAG", "Example")
}