android开启辅助功能后GridView控件导致app闪退

app上线前遇到一个很诡异的问题，同一款型号的手机，一台手机没问题，另一台手机则在显示首页后假死、然后直接闪退。经过排查，确定是自定义GridView惹的祸，异常信息如下：

java.lang.IllegalArgumentException: parameter must be a descendant of this view
at android.view.ViewGroup.offsetRectBetweenParentAndChild(ViewGroup.java:5353)
at android.view.ViewGroup.offsetDescendantRectToMyCoords(ViewGroup.java:5282)
at android.view.ViewGroup$ViewLocationHolder.init(ViewGroup.java:7755)
at android.view.ViewGroup$ViewLocationHolder.obtain(ViewGroup.java:7689)
at android.view.ViewGroup$ChildListForAccessibility.init(ViewGroup.java:7624)
at android.view.ViewGroup$ChildListForAccessibility.obtain(ViewGroup.java:7592)
at android.view.ViewGroup.addChildrenForAccessibility(ViewGroup.java:1927)
at android.view.ViewGroup.onInitializeAccessibilityNodeInfoInternal(ViewGroup.java:2982)
at android.widget.AdapterView.onInitializeAccessibilityNodeInfoInternal(AdapterView.java:983)
at android.widget.AbsListView.onInitializeAccessibilityNodeInfoInternal(AbsListView.java:1509)
at android.widget.GridView.onInitializeAccessibilityNodeInfoInternal(GridView.java:2361)
at android.view.View.onInitializeAccessibilityNodeInfo(View.java:6151)
at android.view.View.createAccessibilityNodeInfoInternal(View.java:6110)
at android.view.View.createAccessibilityNodeInfo(View.java:6095)
at android.view.accessibility.AccessibilityRecord.setSource(AccessibilityRecord.java:145)
at android.view.accessibility.AccessibilityRecord.setSource(AccessibilityRecord.java:119)
at android.view.View.onInitializeAccessibilityEventInternal(View.java:6047)
at android.widget.AdapterView.onInitializeAccessibilityEventInternal(AdapterView.java:994)
at android.view.View.onInitializeAccessibilityEvent(View.java:6035)
at android.view.View.sendAccessibilityEventUncheckedInternal(View.java:5896)
at android.view.View.sendAccessibilityEventUnchecked(View.java:5881)
at android.view.View$SendViewStateChangedAccessibilityEvent.run(View.java:22468)
at android.os.Handler.handleCallback(Handler.java:743)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:5546)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:684)

直接在网上搜这个异常信息，会出来类似的问题，比如这个帖子，这些帖子给出的异常信息相似，最后给出的解决方案也类似，都是说焦点问题，只要调用clearFocus就可以了（这个清楚焦点的操作可以在多个地方进行），但我都试过，发现这些方法都没法解决我遇到的问题。后来通过同事试用app反馈，发现只要打开android系统的辅助功能（android accessibility 比如开关控制、放大手势之类的，不同手机菜单名可能不一样，比如MIUI中是在“无障碍”中的那些功能），就会出现这个问题。然后重新搜，发现是“检测窗口内容（检查您正与其他互动的窗口的内容）”这个功能导致的，在React项目也存在该问题，参考如下链接 传送门 以我的使用场景为例，在我修改GridView后，添加view似乎并不是像其他控件那样，把新添加的View加到整个ViewTree中，而使用辅助功能时，需要从ViewTree的根遍历到所有叶子View，到GridView这一层没法往下走，才导致了上述问题。实际上，看异常也可以看到是在涉及accessibility相关方法时出错，所以只要在GridView中添加如下代码即可解决：

@Override
public void addChildrenForAccessibility(ArrayList<View> outChildren) {
// Explicitly override this to prevent accessibility events being passed down to children
// Those will be handled by the mHostView which lives in the dialog
}