2022-05-09 防重复点击

adapter的点击事件

import android.view.View
import com.chad.library.adapter.base.BaseQuickAdapter
import com.chad.library.adapter.base.listener.OnItemClickListener

abstract class ABCClickListener : OnItemClickListener {
    private var lastClickTime = 1L

    abstract fun onThrottleFirstClick(adapter: BaseQuickAdapter<*, *>, view: View, position: Int)

    override fun onItemClick(adapter: BaseQuickAdapter<*, *>, view: View, position: Int) {
        val currentTimeMillis = System.currentTimeMillis()
        if ((currentTimeMillis - lastClickTime) >= 1000) {
            lastClickTime = currentTimeMillis
            onThrottleFirstClick(adapter, view, position)
        }
    }
}

view的点击事件      协程
fun View.setDebounceClickListener(l: View.OnClickListener) {
        var job: Job? = null
        this.setOnClickListener {
            job?.cancel()
            job = CoroutineScope(Dispatchers.Main).launch {
                delay(250)
                l.onClick(it)
            }
        }
    }

扩展函数实现
package com.a.b.utils

import android.view.View

fun <T : View> T.withTrigger(delay: Long = 800): T {
    triggerDelay = delay
    return this
}

/***
 * 点击事件的View扩展
 * @param block: (T) -> Unit 函数
 * @return Unit
 */
fun <T : View> T.click(block: (T) -> Unit) = setOnClickListener {
//    ClickUtils.applyPressedViewAlpha(this,0.8f)
    if (clickEnable()) {
        block(it as T)
    }
}

/***
 * 带延迟过滤的点击事件View扩展
 * @param delay Long 延迟时间，默认800毫秒
 * @param block: (T) -> Unit 函数
 * @return Unit
 */
fun <T : View> T.clickWithTrigger(time: Long = 800, block: (T) -> Unit) {
    // 此处是点击后按钮背景透明度变化 可参考blankj开源工具类
//    ClickUtils.applyPressedViewAlpha(this,0.6f)
    triggerDelay = time
    setOnClickListener {
        if (clickEnable()) {
            block(it as T)
        }
    }
}

private var <T : View> T.triggerLastTime: Long
    get() = if (getTag(1123460103) != null) getTag(1123460103) as Long else 0
    set(value) {
        setTag(1123460103, value)
    }

private var <T : View> T.triggerDelay: Long
    get() = if (getTag(1123461123) != null) getTag(1123461123) as Long else -1
    set(value) {
        setTag(1123461123, value)
    }

private fun <T : View> T.clickEnable(): Boolean {
    var flag = false
    val currentClickTime = System.currentTimeMillis()
    if (currentClickTime - triggerLastTime >= triggerDelay) {
        flag = true
    }
    triggerLastTime = currentClickTime
    return flag
}