顯示具有 recycle view 標籤的文章。 顯示所有文章
顯示具有 recycle view 標籤的文章。 顯示所有文章

2016年8月11日 星期四

How to arage the recycle view better in the StaggeredGridLayoutManager?

How to arrange the recycle view better in the StaggeredGridLayoutManager?


the concept is:need to know the width of the screen first,that calculate each column width

how to get the width of a fragment?


int mHeaderViewHeight;
mHeaderView.getViewTreeObserver().addOnGlobalLayoutListener(
       new OnGlobalLayoutListener() {
           @Override
           public void onGlobalLayout() {
                                                                                                                                                                                                                                     
               mHeaderViewHeight = mHeaderView.getHeight();
               getViewTreeObserver()
                       .removeGlobalOnLayoutListener(this);
           }
       });

calculate the right width of the cell,then set it


imv.getLayoutParams().width= (int) cellWidth;
       imv.getLayoutParams().height= (int) (cellWidth*3/2);

to handle the Landscape and Portrait

when Landscape

nee to return the height as width

when Portrait

use the width as width


getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE



SpacesItemDecoration extends RecyclerView.ItemDecoration

set the Decoration between the item