import android.os.Looper
import android.os.Handler

inline fun delay(delay: Long, crossinline completion: () -> Unit) {
    Handler(Looper.getMainLooper()).postDelayed({
        completion()
    }, delay)
}

例子:

delay(1000) {
    view.refreshButton.visibility = View.GONE
}

在Kotlin中使用这种结构是个好主意

companion object Run {
   fun after(delay: Long, process: () -> Unit) {
      Handler(Looper.getMainLooper()).postDelayed({
          process()
      }, delay)
   }
}

稍后称为

Run.after(SPLASH_TIME_OUT) {
   val action = SplashFragmentDirections.actionSplashFragmentToLogin()
   v.findNavController().navigate(action)
}

使用Executor而不是handler获取更多信息。 使用ScheduledExecutorService实现post delay:

ScheduledExecutorService worker = Executors.newSingleThreadScheduledExecutor();
Runnable runnable = () -> {
    public void run() {
        // Do something
    }
};
worker.schedule(runnable, 2000, TimeUnit.MILLISECONDS);

协程 Kotlin

private val SPLASH_SCREEN_TIME_OUT_CONST: Long = 3000

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_splash)
    window.setFlags(
        WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN
    )
    GlobalScope.launch {
        delay(SPLASH_SCREEN_TIME_OUT_CONST)
        goToIntro()
    }

}

private fun goToIntro(){
    startActivity(Intent(this, IntroActivity::class.java))
    finish()
}

我有三个解决方案:

显式地指定Looper: 处理程序(Looper.getMainLooper ()) .postDelayed ({ / /代码 },持续时间) 指定隐式线程本地行为: 处理程序(Looper.myLooper () ! !) .postDelayed ({ / /代码 },持续时间) 使用线程: 线程({ 尝试{ thread . sleep (3000) } catch (e:异常){ 把e ｝ / /代码 }).start ()

使用这个

Looper.myLooper()?.let {
    Handler(it).postDelayed({
        //Your Code
    },2500)
}