notifyItemRangeChanged()导致RecyclerView在Android上崩溃

Question

布局设计：

HorizontalScrollView-parent, holding RV[
    RecyclerView=>(GridLayoutManager) (orientation verticle)]

这将基本上执行双向滚动。该用户界面适用于电视。此网格中的焦点行将显示额外的细节，而其他行则不会。因此，每当从onFocusChange中一行转换到另一行时，我会修改Adapter的dataset并调用notifyItemRangeChanged()。

当行数小于屏幕垂直长度（即可垂直滚动）时，这种方法可以正常工作。如果行数较少（如4行），就会发生崩溃。

错误：

    java.lang.IllegalArgumentException: parameter must be a descendant of this view
at android.view.ViewGroup.offsetRectBetweenParentAndChild(ViewGroup.java:5937)
at android.view.ViewGroup.offsetDescendantRectToMyCoords(ViewGroup.java:5866)
at android.widget.HorizontalScrollView.isWithinDeltaOfScreen(HorizontalScrollView.java:1168)
at android.widget.HorizontalScrollView.onSizeChanged(HorizontalScrollView.java:1569)
at android.view.View.sizeChange(View.java:19719)
at android.view.View.setFrame(View.java:19680)
at android.view.View.layout(View.java:19583)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1780)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1546)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1544)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1544)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1080)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1544)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1544)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:758)
at android.view.View.layout(View.java:19586)
at android.view.ViewGroup.layout(ViewGroup.java:6053)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2484)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2200)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1386)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6733)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:658)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)

我试过调用notifydatasetchange，但它会返回getAdapterPosition = -1，这将不会导致焦点从一行改变到另一行

由于适配器代码长度超过stackoverflow设置的字符长度，因此我提供了相应的驱动程序链接。 适配器和视图持有者布局代码

垂直滚动时无崩溃

垂直滚动时崩溃

- DJphy

---

这个链接可能会对您有所帮助：https://dev59.com/SYvda4cB1Zd3GeqPaILZ。 - sanemars

谢谢，我已经查看了它们，但很遗憾对我不相关。 - DJphy

仅凭附加在问题中的堆栈跟踪无法提供真正的帮助。 - hardartcore

尝试这样做：your_scrollview_object.setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS); - Ümañg ßürmån

@DJphy：第二张截图中recyclerView里只有四个项目吗？ - Jitesh Mohite

Answer 1

当recyclerview中的项目具有焦点时，我遇到了同样的问题。 请尝试以下方法：

选项1 在scrollview中使用 windowSoftInputMode="adjustPan"

选项2 将自定义ScrollListener添加到Activity中，目的是在RV开始滚动时清除当前焦点。

protected class FocusableScrollListner implements OnScrollListener {

        @Override
        public void onScroll(AbsListView view, int firstVisibleItem,
                int visibleItemCount, int totalItemCount) {
            // do nothing 
        }

        @Override
        public void onScrollStateChanged(AbsListView view, int scrollState) {
            if (SCROLL_STATE_TOUCH_SCROLL == scrollState) {
                View currentFocus = getCurrentFocus();
                if (currentFocus != null) {
                    currentFocus.clearFocus();
                }
            }
        }

    }

选项三：

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View currentFocus = ((Activity)context).getCurrentFocus();
    if (currentFocus != null) {
        currentFocus.clearFocus();
    }
}

根据您的代码，可能有其他选择可供选择，您需要清除焦点。

- aanshu

---

当然，我会检查这个的，感谢你的帮助。 - DJphy

请告诉我们是否有帮助，否则请分享您的疑虑，我们会尝试解决。 - aanshu

尝试了你的解决方案，但没有成功。我不能使用选项2，因为我的平台是电视。在这里，触摸无效，需要使用遥控器导航。此外，在我注册到onfocuschange之后，我无法清除obindviewholder中的焦点。 - DJphy