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@matpag
Created December 2, 2019 09:23
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ThrottleClickListener prevent double click using OnClickListener
import android.os.SystemClock
import android.view.View
/**
* This is a custom clicklistener to prevent multiple click events to happens at the same time.
*
* Each click on a button is added in the internal event handler queue, there is no way to remove
* them from there so the only thing we can do is adding a filter to prevent them to run too
* frequently
*
* In RxJava this could be achieved using RxBinding and throttleFirst operator
*
* Base implementation took from here: https://stackoverflow.com/a/20672997/2910520
*/
abstract class OnThrottleClickListener @JvmOverloads constructor(
private val minClickInterval: Long = 600 //default value for minclick time
) : View.OnClickListener {
/**
* The time the last click was applied
*/
private var mLastClickTime: Long = 0
/**
* @param v The view that was clicked.
*/
abstract fun onSingleClick(v: View?)
override fun onClick(v: View?) {
val currentClickTime: Long = SystemClock.elapsedRealtime()
val elapsedTime = currentClickTime - mLastClickTime
if (elapsedTime <= minClickInterval) return
mLastClickTime = currentClickTime
onSingleClick(v)
}
}
//Extension (optional but usefull):
fun View.setThrottleClickListener(action: (v: View?) -> Unit, millis: Long = 700) {
setOnClickListener(object : OnThrottleClickListener(millis) {
override fun onSingleClick(v: View?) {
action(v)
}
})
}
//Usage with default millis timeout:
button.setThrottleClickListener({
//my click logic
})
//Usage with custom millis timeout:
button.setThrottleClickListener({
//my click logic
}, 1000)
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