RecycleView添加（自定義）Item間距

RecycleView自定義Item間距：

recycleView.addItemDecoration(new CustomItemdecration(space));

自定義一個類繼承ItemDecoration,重寫getItemOffsets();在此方法中做相應處理實現自定義item間距

具體實現：

public class CustomItemdecrationextends RecyclerView.ItemDecoration{
    private int space;
    public CustomItemdecration(int space){
        this.space = space;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        if(parent.getChildPosition(view) >= *){
            outRect.top = space;
        }
        if(parent.getChildPosition(view) != 0 && parent.getChildPosition(view) %3 != 0){
            outRect.left = space;
        }
    }
}