class VerifyCodeUtil<T : TextView>(private val textView: T,
private val defaultText: String = "发送验证码",
private var countDown: Int = 60) {
private var running = false
private var runnable: Runnable = Runnable {
if (!running) {
return@Runnable
}
if (countDown-- == 0) {
finish()
return@Runnable
}
updateText()
}
// 开始倒计时
fun start() {
running = true
textView.isEnabled = false
startBlock(textView)
updateText()
}
@SuppressLint("SetTextI18n")
private fun updateText() {
textView.text = "${countDown}s重新获取"
textView.postDelayed(runnable, 1000L)
}
// 结束倒计时
fun finish() {
running = false
textView.isEnabled = true
textView.text = defaultText
finishBlock(textView)
}
private var startBlock: (T) -> Unit = {}
private var finishBlock: (T) -> Unit = {}
fun doOnStart(startBlock: (T) -> Unit) = this.apply {
this.startBlock = startBlock
}
fun doOnFinish(finishBlock: (T) -> Unit) = this.apply {
this.finishBlock = finishBlock
}
}
使用
val verifyCodeUtil = VerifyCodeUtil(tv_get_verify_code)
.doOnStart { it.solid = Color.GRAY }
.doOnFinish { it.solid = Color.parseColor("#FF5818") }
.apply {
this.start() // 启动倒计时
}
// 关闭倒计时
verifyCodeUtil.finish()
