enum class TouchType {
SINGLE_CLICK, DOUBLE_CLICK, LONG_CLICK, DROP_DOWN, DROP_UP
}
class SafeMultipleTouchListener : View.OnTouchListener {
private var downY = 0
private var firstClick = 0L
private var secondClick = 0L
private var actionUp = false
private var isDoubleClick = false
private var runBlock: Next<SafeMultipleTouchListener>? = null
var listener: ((type: TouchType) -> Unit)? = null
override fun onTouch(v: View, event: MotionEvent): Boolean {
when (event.action) {
MotionEvent.ACTION_DOWN -> {
downY = event.rawY.toInt()
actionUp = false
isDoubleClick = false
if (firstClick == 0L && secondClick == 0L) {
firstClick = System.currentTimeMillis()
runBlock = Next(this).UI(300) {
if (actionUp) {
if (!isDoubleClick) {
executionListener(TouchType.SINGLE_CLICK)
}
} else {
executionListener(TouchType.LONG_CLICK)
}
}.Run()
} else {
secondClick = System.currentTimeMillis()
if (secondClick - firstClick < 300) {
runBlock?.Cancel()
isDoubleClick = true
executionListener(TouchType.DOUBLE_CLICK)
}
}
}
MotionEvent.ACTION_MOVE -> {
val differ = event.rawY.toInt() - downY
if (differ > 50) {
runBlock?.Cancel()
executionListener(TouchType.DROP_DOWN)
} else if (differ < -50) {
runBlock?.Cancel()
executionListener(TouchType.DROP_UP)
}
}
MotionEvent.ACTION_UP -> actionUp = true
}
return true
}
private fun executionListener(type: TouchType) {
Safe { listener?.invoke(type) }
firstClick = 0L
secondClick = 0L
}
}
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