When user taps fast on the button the showDialog() method displays multiple times on top of each other, so when you dismiss it there is another one behind it. I am looking for a way to ignore the second tap for 1 second without using a handler or check the previous tap's time.
//Button that opens a dialog
button.setOnClickListener {
showDialog()
}
我正在寻找一个使用Kotlin协程或Kotlin流的解决方案，用于future 的实现.
最好使用简单的Flag，而不是延迟，因为这不是一个好的用户体验.
但是，如果您想使用协程，您可以简单地使用Kotlin Coroutine's Flow来应用以下内容:
首先，我为click事件创建了一个Extension Function，它返回一个协同程序的流.这样地:
fun View.clicks(): Flow<Unit> = callbackFlow {
setOnClickListener {
offer(Unit)
}
awaitClose { setOnClickListener(null) }
}
Now, All you need is Calling your Function in onCreate like this:
button.clicks().debounce(1000).onEach { println("clicked") }.launchIn(GlobalScope)
别忘了在build中添加这些行.gradle文件:
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'
Edit:个
kotlin协同程序中尚未实现throttleFirst运算符的流量模拟.但是，可以通过扩展功能来实现:
@FlowPreview
@ExperimentalCoroutinesApi
fun <T> Flow<T>.throttleFirst(windowDuration: Long): Flow<T> = flow {
var lastEmissionTime = 0L
collect { upstream ->
val currentTime = System.currentTimeMillis()
val mayEmit = currentTime - lastEmissionTime > windowDuration
if (mayEmit)
{
lastEmissionTime = currentTime
emit(upstream)
}
}
}
The changes are as follows:
binding.button.clicks().throttleFirst(1250)
.onEach {
//delay(100)
showDialog()
}.launchIn(GlobalScope)
Also, you can use a delay() to handle this. Take it easy to change value of these parameters according to your needs.