Scale up Item in RecyclerView to overlaps 2 adjacent items Android

Question

I\'m using RecyclerView with GridLayoutManager. The goal I want to achieve is when I click on an item, It\'ll scale up and overlaps the adjacent items. Just like the picture

Answer 1

You need to do it the old way you do with normal ViewGroups, overriding the draw order of children. This example forces the first view to always be drawn last - you need to customize for your use case.

public TopForcingRecyclerView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    setChildrenDrawingOrderEnabled(true);
}

@Override protected int getChildDrawingOrder(int childCount, int i) {
    if (i >= childCount - 1) return 0; 
    //when asked for the last view to draw, answer ZERO
    else return i + 1;
    //when asked for the i-th view to draw, answer "the next one"
}

Pay attention to off by one errors.