android - Espresso 测试错误 : AppNotIdleException

Question

我关闭了开发者选项中的所有动画。但是当我尝试单击其中一个按钮时，我仍然会遇到此异常。

我的应用确实处于 Activity 状态，并非完全处于空闲状态，但我无法更改它。

android.support.test.espresso.AppNotIdleException: Looped for 6930
iterations over 60 SECONDS. The following Idle Conditions failed .
 at dalvik.system.VMStack.getThreadStackTrace(Native Method)
 at java.lang.Thread.getStackTrace(Thread.java:580)
 at android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:92)
 at android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:56)
 at android.support.test.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:184)
 at android.support.test.espresso.ViewInteraction.doPerform(ViewInteraction.java:115)
 at android.support.test.espresso.ViewInteraction.perform(ViewInteraction.java:87)

Answer 1

过去几天我一直在努力解决这个问题。
这是我用来识别“违规者”的一种方法:

private void dumpThreads() {
    int activeCount = Thread.activeCount();
    Thread[] threads = new Thread[activeCount];
    Thread.enumerate(threads);
    for (Thread thread : threads) {
        System.err.println(thread.getName() + ": " + thread.getState());
        for (StackTraceElement stackTraceElement : thread.getStackTrace()) {
            System.err.println("\t" + stackTraceElement);
        }
    }
}

在我的例子中，Facebook SDK 使用的是 AsyncTask 线程池。