java - 检查对话框是否可见 - Espresso

Question

我在 Stackoverflow 上发现了类似检查对话框何时可见的内容:

 onView(withText("Yes"))
                    .inRoot(isDialog())
                    .check(matches(isDisplayed()))
                    .perform(click());

当然，如果带有"is"按钮的对话框可见，则这有效，但在不同的情况下，如果对话框不可见，我会崩溃:

android.support.test.espresso.NoMatchingViewException: No views in hierarchy found matching: with text: is "Yes"

那么如何写如果对话框存在则点击yes，如果不存在则什么都不点击呢？

Answer 1

你可以试试这个:

  onView(withText("Yes")).inRoot(isDialog()).withFailureHandler(new FailureHandler() {
            @Override
            public void handle(Throwable error, Matcher<View> viewMatcher){

            }
        }).check(matches(isDisplayed())).perform(customClick());

//if dialog is visible, perform click, otherwise do nothing.