DataBinding防止多次点击 DataBinding防误触 DataBinding点击防抖

点击事件防多次点击的方法有很多种，比如使用rxjava，自己写防抖事件等等，由于业务需要，我使用的是协程+livedata+Lifecycle实现

首先是防误触处理

//点击事件防抖
@OptIn(ExperimentalCoroutinesApi::class)
@CheckResult
fun View.singleClick(duration:Long = 600) = callbackFlow<View> {
    var lastClick = 0L
    val listener = View.OnClickListener {
        if(System.currentTimeMillis() - lastClick > duration){
            kotlin.runCatching { offer(it) }
            lastClick = System.currentTimeMillis()
        }
    }
    setOnClickListener(listener)
    awaitClose { setOnClickListener(null) }
}
@OptIn(ExperimentalCoroutinesApi::class)
fun View.singleClick(owner: LifecycleOwner, duration:Long = 600, observer: Observer<View>) =
    singleClick(duration)
        .asLiveData()
        .observe(owner,observer)

然后是把事件和databinding绑定

@BindingAdapter("singleClick",requireAll = false)
fun setSingleClick(view: View, listener:View.OnClickListener?){
    val owner =  ViewTreeLifecycleOwner.get(view)
    if(listener != null && owner != null){
        view.singleClick(owner){
            listener.onClick(it)
        }
    }
}

接下来写事件方法

        <Button
            android:id="@+id/btn"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="防多次点击测试"
            android:textColor="@color/colorPrimary"
            android:gravity="center"
            singleClick="@{()->vm.click1()}" />

/data里写事件方法

class ClickViewModel :BaseViewModel(){
    //方法名可以随便起
    fun click1(){
        LogUtils.e("点击了按钮")
    }
}

 

本文地址：https://blog.csdn.net/jingzz1/article/details/109380475