android - 如何在 postDelayed 模式下停止 Handler？

Question

当 Handler 不应该再计数时，如何停止它的计数？也许你可以告诉我如何使用下面的代码。

 public void handler() {
    nHandler.postDelayed(new Runnable() {
        @Override
        public void run() {

                viewFlipper.setDisplayedChild(8);
        }
    }, 20000);
}

Answer 1

使用removeCallbacks

nHandler.removeCallbacks(nhandlerTask);

http://developer.android.com/reference/android/os/Handler.html#removeCallbacks(java.lang.Runnable)

public final void removeCallbacks (Runnable r)

Added in API level 1
Remove any pending posts of Runnable r that are in the message queue.