Debouncer.java

import android.os.Handler;
import android.os.Looper;
import android.os.Message;

public class Debouncer extends Handler implements Runnable {

    private final Runnable mRunnable;
    private final long mDelay;

    public Debouncer(long delay, Runnable runnable) {
        mRunnable = runnable;
        mDelay = delay;
    }

    public Debouncer(long delay, Looper looper, Runnable runnable) {
        super(looper);
        mRunnable = runnable;
        mDelay = delay;
    }

    @Override
    public void run() {
        removeMessages(0);
        sendEmptyMessageDelayed(0, mDelay);
    }

    @Override
    public void handleMessage(Message msg) {
        post(mRunnable);
    }
}