利用kotlin的拓展函数和拓展属性轻而易举实现点击事件防重复：
新建一个kt文件，复制以下代码：

inline fun <T : View> T.singleClick(time: Long = 800, crossinline block: (T) -> Unit) {
    setOnClickListener {
        val currentTimeMillis = System.currentTimeMillis()
        if (currentTimeMillis - lastClickTime > time || this is Checkable) {
            lastClickTime = currentTimeMillis
            block(this)
        }
    }
}
//兼容点击事件设置为this的情况
fun <T : View> T.singleClick(onClickListener: View.OnClickListener, time: Long = 800) {
    setOnClickListener {
        val currentTimeMillis = System.currentTimeMillis()
        if (currentTimeMillis - lastClickTime > time || this is Checkable) {
            lastClickTime = currentTimeMillis
            onClickListener.onClick(this)
        }
    }
}

var <T : View> T.lastClickTime: Long
    set(value) = setTag(1766613352, value)
    get() = getTag(1766613352) as? Long ?: 0

使用方法：

tvTest.singleClick(1500) {
            Log.e("singClick",System.currentTimeMillis().toString())
        }
//括号内为间隔时间，可以忽略，默认800
//或者
tvTest.singleClick {
            Log.e("singClick",System.currentTimeMillis().toString())
        }