小编Sta*_*ter的帖子

我正在使用一个简单RecyclerView的Android网站实现,StaggeredGridLayoutManager并且我一直收到崩溃我的应用程序的错误:

java.lang.IllegalArgumentException: Scrapped or attached views may not be recycled. isScrap:false isAttached:true
            at android.support.v7.widget.RecyclerView$Recycler.recycleViewHolderInternal(RecyclerView.java:3501)
            at android.support.v7.widget.RecyclerView$LayoutManager.scrapOrRecycleView(RecyclerView.java:5355)
            at android.support.v7.widget.RecyclerView$LayoutManager.detachAndScrapAttachedViews(RecyclerView.java:5340)
            at android.support.v7.widget.StaggeredGridLayoutManager.onLayoutChildren(StaggeredGridLayoutManager.java:572)
            at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:1918)
            at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:2155)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1021)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:502)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
            at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
            at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
            at android.view.View.layout(View.java:14008)
            at android.view.ViewGroup.layout(ViewGroup.java:4373)
            at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892) …

因此,在尝试使用" Slide活动"转换但具有不同的重力时,应用程序在使用时崩溃Gravity.START,使用此:

getWindow().setExitTransition(new Slide(Gravity.START));

我收到此错误:

IllegalArgumentException:无效的幻灯片方向

但是如果查看源代码,那么上面的特定构造函数会调用,setSlideEdge()在这种情况下,该方法会通过switch语句来设置您之前指定的Gravity:

switch (slideEdge) {
        case Gravity.LEFT:
            mSlideCalculator = sCalculateLeft;
            break;
        case Gravity.TOP:
            mSlideCalculator = sCalculateTop;
            break;
        case Gravity.RIGHT:
            mSlideCalculator = sCalculateRight;
            break;
        case Gravity.BOTTOM:
            mSlideCalculator = sCalculateBottom;
            break;
        case Gravity.START:
            mSlideCalculator = sCalculateStart;
            break;
        case Gravity.END:
            mSlideCalculator = sCalculateEnd;
            break;
        default:
            throw new IllegalArgumentException("Invalid slide direction");
    }

Gravity.LEFT工作得很好,但因为我想要RTL支持,所以只使用它才有意义Gravity.START.我很困惑为什么在这个switch语句中执行默认情况,唯一的解释是它是一个bug.

我会向谷歌报告,但他们没有公开的方式来报告这样的API错误,在这种情况下,修复错误并不是很明显.所以,PSA给任何想要使用Gravity的Slide动画的人START.