RecyclerView中的視圖之間的空間拉伸

Question

我有一個動態數量的元素的RecyclerView（元素的高度未預先知道）。如果所有元素的高度都小於屏幕高度，我想在元素之間添加相等的空格。有沒有簡單的方法來做這樣的事情？

謝謝！

CraniumRat

Answer 1

使用這個類來動態地添加空間recyclerview：

public class VerticalSpaceItemDecoration extends RecyclerView.ItemDecoration { 

    private final int mVerticalSpaceHeight; 

    public VerticalSpaceItemDecoration(int mVerticalSpaceHeight) { 
     this.mVerticalSpaceHeight = mVerticalSpaceHeight; 
    } 

    @Override 
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, 
           RecyclerView.State state) { 
     outRect.bottom = mVerticalSpaceHeight; 
    } 
} 

如果設置列表或所有元素則變化也更新mVerticalSpaceHeight的高度之和。

加入這一行：

rv.addItemDecoration(new VerticalSpaceItemDecoration(PUT THE CALCULATED HEIGHT IN HERE))