Created
May 14, 2013 03:09
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A debounced onClickListener for Android
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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 minimumInterval; | |
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 minimumIntervalMsec The minimum allowed time between clicks - any click sooner than this after a previous click will be rejected | |
*/ | |
public DebouncedOnClickListener(long minimumIntervalMsec) { | |
this.minimumInterval = minimumIntervalMsec; | |
this.lastClickMap = new WeakHashMap<View, Long>(); | |
} | |
@Override public void onClick(View clickedView) { | |
Long previousClickTimestamp = lastClickMap.get(clickedView); | |
long currentTimestamp = SystemClock.uptimeMillis(); | |
lastClickMap.put(clickedView, currentTimestamp); | |
if(previousClickTimestamp == null || (currentTimestamp - previousClickTimestamp.longValue() > minimumInterval)) { | |
onDebouncedClick(clickedView); | |
} | |
} | |
} |
Thanks.
Made a small kotlin remake, ready for production: https://gist.github.com/97aed21a2633bceae13261c1c5948cbd
nice - thanks!
…------------------------------
Rich Freedman
N2EHL
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On Tue, Jun 18, 2019 at 9:38 AM Andrii Kovalchuk ***@***.***> wrote:
Thanks.
Made a small kotlin remake, ready for production:
https://gist.github.com/97aed21a2633bceae13261c1c5948cbd
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I used this and it worked for regular events, but when my click event triggers an adapter.notifyDataSetChanged call, the previousClickStamp gets reset.
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Excellent