当程序报错：java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference当程序报错：java.lang.NullPointerException: Attempt t
阅读背景：
Android程序报错：java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.
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