Avoid button multiple rapid clicks

We can do it without any library. Just create one single extension function:

fun View.clickWithDebounce(debounceTime: Long = 600L, action: () -> Unit) {
    this.setOnClickListener(object : View.OnClickListener {
        private var lastClickTime: Long = 0

        override fun onClick(v: View) {
            if (SystemClock.elapsedRealtime() - lastClickTime < debounceTime) return
            else action()

            lastClickTime = SystemClock.elapsedRealtime()
        }
    })
}

View onClick using below code:

buttonShare.clickWithDebounce { 
   // Do anything you want
}

Here's a 'debounced' onClick listener that I wrote recently. You tell it what the minimum acceptable number of milliseconds between clicks is. Implement your logic in onDebouncedClick instead of onClick

import android.os.SystemClock;
import android.view.View;

import java.util.Map;
import java.util.WeakHashMap;

/**
 * A Debounced OnClickListener
 * Rejects clicks that are too close together in time.
 * This class is safe to use as an OnClickListener for multiple views, and will debounce each one separately.
 */
public abstract class DebouncedOnClickListener implements View.OnClickListener {

    private final long minimumIntervalMillis;
    private Map<View, Long> lastClickMap;

    /**
     * Implement this in your subclass instead of onClick
     * @param v The view that was clicked
     */
    public abstract void onDebouncedClick(View v);

    /**
     * The one and only constructor
     * @param minimumIntervalMillis The minimum allowed time between clicks - any click sooner than this after a previous click will be rejected
     */
    public DebouncedOnClickListener(long minimumIntervalMillis) {
        this.minimumIntervalMillis = minimumIntervalMillis;
        this.lastClickMap = new WeakHashMap<>();
    }

    @Override 
    public void onClick(View clickedView) {
        Long previousClickTimestamp = lastClickMap.get(clickedView);
        long currentTimestamp = SystemClock.uptimeMillis();

        lastClickMap.put(clickedView, currentTimestamp);
        if(previousClickTimestamp == null || Math.abs(currentTimestamp - previousClickTimestamp) > minimumIntervalMillis) {
            onDebouncedClick(clickedView);
        }
    }
}

With RxBinding it can be done easily. Here is an example:

RxView.clicks(view).throttleFirst(500, TimeUnit.MILLISECONDS).subscribe(empty -> {
            // action on click
        });

Add the following line in build.gradle to add RxBinding dependency:

compile 'com.jakewharton.rxbinding:rxbinding:0.3.0'