How to set the height of an item row in GridLayoutManager

Question

My Recycler Item which inflate in onCreateViewHolder

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:gravity="center"     android:orientation="vertical"     android:padding="16dp">      <ImageView         android:id="@+id/gridListImageView"         android:layout_width="96dp"         android:layout_height="96dp"         android:src="@drawable/a" />      <TextView         android:id="@+id/gridListView_title"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginTop="20dp"         android:text="Large Text"         android:textAppearance="?android:attr/textAppearanceLarge" /> </LinearLayout> 

I want to display something like this Which has one row of half the height of recycler View? And add padding to the rest of the space? Can i do this by GridLayoutManager?

And this is my GridLayoutManager

        GridLayoutManager glm = new GridLayoutManager(getActivity(), 2);         recyclerView.setLayoutManager(glm); 

Answer 1

When inflating layout for your views in adapter, you can set their height programmatically. In order to evaluate proper height to use you can rely on parent ViewGroup (that is the RecyclerView itself). Here it is a sample:

@Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {     View itemView = mLayoutInflater.inflate(R.layout.view_item, parent, false);     // work here if you need to control height of your items     // keep in mind that parent is RecyclerView in this case     int height = parent.getMeasuredHeight() / 4;     itemView.setMinimumHeight(height);     return new ItemViewHolder(itemView);         } 

Hope this could help.

Answer 2

As of support library 25.1.0, ABOVE ANSWER DOESN'T WORK. I suggest below modifications:

    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {         View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);         GridLayoutManager.LayoutParams lp = (GridLayoutManager.LayoutParams) v.getLayoutParams();         lp.height = parent.getMeasuredHeight() / 4;         v.setLayoutParams(lp);         return new ViewHolder(v);     }