How to set different columns for rows in android gridview

Question

I want to have a gridview similar to this

Every odd numbered row will have two images of big size and even numbered rows will have four smaller images.How can I achieve this?

Answer 1

I have something similar and i solved with the new RecyclerView.

I created a Fragment with an a RecyclerView. RecyclerView on xml:

<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/filter_subtypes" android:layout_width="match_parent" android:layout_height="match_parent" />

On your Fragment/Activity (OnViewCreated in my fragment case). I find the RecyclerView and set an Adapter- a normal Adapter class inherit from RecyclerView.Adapter< YOUR VIEW HOLDER class >- And then i create a GridLayoutManager

final GridLayoutManager mng_layout = new GridLayoutManager(this.getActivity(), TOTAL_CELLS_PER_ROW/*In your case 4*/);

Then i override this method to set a dynamic numbers of columns (cells)

mng_layout.setSpanSizeLookup( new GridLayoutManager.SpanSizeLookup() {
            @Override
            public int getSpanSize(int position) {
                switch( adapterSubtype.getItemViewType(position) ) {
                    case FilterSubtypesAdapter.TYPE_LOW:
                        return TOTAL_CELLS_PER_ROW;
                    case FilterSubtypesAdapter.TYPE_HIGH:
                        return 2;
                    default:
                        return -1;
                }
            }
        });
myRecyclerView.setLayoutManager(mng_layout);

With this you will get dynamic numbers of cell on your rows.

EXTRA: Then if you are using the same view/type view on your adapter, you will get the same w & h view. You will need to create 2 xml views for TYPE_HIGH and other view for TYPE_LOW.

So, in your adapter, you need to have 2 kind of data (1 for high images and 1 for low images). You must override this methods

@Override
public SubtypeViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = null;
    if (viewType==TYPE_HIGH) {
        view = inflater.inflate(R.layout.item_image_high, parent, false);
    } else {
        view = inflater.inflate(R.layout.item_image_low, parent, false);
    }
    return new SubtypeViewHolder(view, viewType);
}

 @Override
 public int getItemViewType(int position) {
     return (list.get(position).getType()==Subtype_type.HIGH) ? TYPE_HIGH : TYPE_LOW;
 }

I hope i was clear, any problem tell me.

Answer 2

Instead of considering a single image views i am taking group of three images as a single grid item,

try this inside your grid adapter

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linear"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/green"
    android:orientation="vertical">
<ImageView
    android:id="@+id/image"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitXY"
    android:src="@drawable/user"
     />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <ImageView
            android:id="@+id/image_1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:scaleType="fitXY"
            android:src="@drawable/user"

            />
        <ImageView
            android:id="@+id/image_2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:src="@drawable/user"
            android:scaleType="fitXY"
            android:layout_weight="1"
            />

        </LinearLayout>

    </LinearLayout>

and your grid view would be like

<GridView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:numColumns="2"
    >

</GridView>

The only thing you have to take care of is, the sequence of your image. might be this will help you

Answer 3

If you are using RecyclerView for GridView, then there is solution that should work for you:

GridLayoutManager layoutManager = new GridLayoutManager(this, 4);
layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
    @Override
    public int getSpanSize(int position) {
         int mod = position % 6;    

         if(position == 0 || position == 1)
              return 2;
         else if(position < 6)
              return 1;
         else if(mod == 0 || mod == 1)
              return 2;
         else
              return 1;
    }
});

recyclerView.setLayoutManager(layoutManager);

Hope this work for you!