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tmac1999 avatar tmac1999 commented on July 24, 2024

Debug了一下,发现了原因,因为在执行ShadowLooper.runUiThreadTasksIncludingDelayedTasks();时,Scheduler里的runnables还没有任何runnable对象存在(因为是wait了1000ms后才post过来一个runnable对象),所以Scheduler里的下面这个方法里的advanceTo其实并没有调用。

/**
   * Run all runnables in the queue.
   *
   * @return  True if a runnable was executed.
   */
  public synchronized boolean advanceToLastPostedRunnable() {
    return size() >= 1 && advanceTo(runnables.get(runnables.size() - 1).scheduledTime);
  }

所以要使得runnables有对象,只需要ShadowLooper.runUiThreadTasksIncludingDelayedTasks();前面再Thread.sleep(2000);就可以了。

from android-unit-testing-tutorial.

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