Android 我能'；不要用浓缩咖啡点击复选框

我正在用浓缩咖啡做一些测试。我想点击复选框并用test选中它。但我不能。我试着用ıd和contentdescription。Espresso找到了视图，但无法执行

  onView(withContentDescription("register check box 1"))
                        .check(matches(isNotChecked()))
                        .perform(click())
                        .check(matches(isChecked()));

我犯了那个错误

android.support.test.espresso.PerformException: Error performing 'sıngle click' on view 'with content description: is "register check box 1"'.
at android.support.test.espresso.PerformException$Builder.build(PerformException.java:83)
at android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:70)
at android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:53)
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)

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我找到了解决办法。在我看来，xml复选框中有一行android:layout_marginLeft=“-5dp”。我把它取下来，效果很好。但是我不明白原因。

你可以回答你自己的问题。请发布一个答案，然后接受它。因为你的解决方案不容易看到。谢谢