问题描述
我为我的动画 Gridlayout 使用了自定义 RecyclerView,它在其他设备上运行良好。不幸的是,当我在 Redmi Note 2 上对其进行测试时,我遇到了一个奇怪的错误,其中第一行项目无法正确显示,因为有一个巨大的空间,就像屏幕截图上的一样
我注意到这是因为添加 android:requiresFadingEdge="vertical"
这是自定义的 RecyclerView 类
public class GridRecyclerView extends RecyclerView {
public GridRecyclerView(Context context) {
super(context);
}
public GridRecyclerView(Context context,AttributeSet attrs) {
super(context,attrs);
}
public GridRecyclerView(Context context,AttributeSet attrs,int defStyle) {
super(context,attrs,defStyle);
}
@Override
protected void attachLayoutAnimationParameters(View child,ViewGroup.LayoutParams params,int index,int count) {
final LayoutManager layoutManager = getLayoutManager();
if (getAdapter() != null && layoutManager instanceof GridLayoutManager) {
GridLayoutAnimationController.AnimationParameters animationParams =
(GridLayoutAnimationController.AnimationParameters) params.layoutAnimationParameters;
if (animationParams == null) {
// If there are no animation parameters,create new once and attach them to
// the LayoutParams.
animationParams = new GridLayoutAnimationController.AnimationParameters();
params.layoutAnimationParameters = animationParams;
}
// Next we are updating the parameters
// Set the number of items in the RecyclerView and the index of this item
animationParams.count = count;
animationParams.index = index;
// Calculate the number of columns and rows in the grid
final int columns = ((GridLayoutManager) layoutManager).getSpanCount();
animationParams.columnsCount = columns;
animationParams.rowsCount = count / columns;
// Calculate the column/row position in the grid
final int invertedindex = count - 1 - index;
animationParams.column = columns - 1 - (invertedindex % columns);
animationParams.row = animationParams.rowsCount - 1 - invertedindex / columns;
} else {
// Proceed as normal if using another type of LayoutManager
super.attachLayoutAnimationParameters(child,params,index,count);
}
}
}
对于整个代码,您可以从这个博客中获得 https://proandroiddev.com/enter-animation-using-recyclerview-and-layoutanimation-part-2-grids-688829b1d29b
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解决方法
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