Android Wear: How to use a simple a GridViewPager with a FragmentGridPagerAdapter.

grid.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.wearable.view.GridViewPager
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:keepScreenOn="true" />

GridActivity.java

public class GridActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.grid);
        
        final GridViewPager mGridPager = (GridViewPager) findViewById(R.id.pager);
        mGridPager.setAdapter(new SampleGridPagerAdapter(this, getFragmentManager()));
    }
}

SampleGridPagerAdapter.java

public class SampleGridPagerAdapter extends FragmentGridPagerAdapter {

    private final Context mContext;
    private ArrayList<SimpleRow> mPages;

    public SampleGridPagerAdapter(Context context, FragmentManager fm) {
        super(fm);
        mContext = context;
        initPages();
    }

    private void initPages() {
        mPages = new ArrayList<SimpleRow>();

        SimpleRow row1 = new SimpleRow();
        row1.addPages(new SimplePage("Title1", "Text1", R.drawable.ic_info, R.drawable.hill));
        row1.addPages(new SimplePage("Title2", "Text2", R.drawable.ic_tris, R.drawable.img2));

        SimpleRow row2 = new SimpleRow();
        row2.addPages(new SimplePage("Title3", "Text3", R.drawable.ic_ic_dh_bat, R.drawable.rose));

        SimpleRow row3 = new SimpleRow();
        row3.addPages(new SimplePage("Title4", "Text4", R.drawable.ic_error_loadingorangesmall, R.drawable.sea));

        SimpleRow row4 = new SimpleRow();
        row4.addPages(new SimplePage("Title5", "Text5", R.drawable.ic_launcher, R.drawable.water));
        row4.addPages(new SimplePage("Title6", "Text6", R.drawable.ic_launcher, R.drawable.mountain));

        mPages.add(row1);
        mPages.add(row2);
        mPages.add(row3);
        mPages.add(row4);
    }

    @Override
    public Fragment getFragment(int row, int col) {
        SimplePage page = ((SimpleRow)mPages.get(row)).getPages(col);
        CardFragment fragment = CardFragment.create(page.mTitle, page.mText, page.mIconId);
        return fragment;
    }

    @Override
    public ImageReference getBackground(int row, int col) {
        SimplePage page = ((SimpleRow)mPages.get(row)).getPages(col);
        return ImageReference.forDrawable(page.mBackgroundId);
    }

    @Override
    public int getRowCount() {
        return mPages.size();
    }

    @Override
    public int getColumnCount(int row) {
        return mPages.get(row).size();
    }
}

SimplePage.java

public class SimplePage {

    public String mTitle;
    public String mText;
    public int mIconId;
    public int mBackgroundId;

    public SimplePage(String title, String text, int iconId, int backgroundId) {
        this.mTitle = title;
        this.mText = text;
        this.mIconId = iconId;
        this.mBackgroundId = backgroundId;
    }
}

SimpleRow.java

public class SimpleRow {

    ArrayList<SimplePage> mPagesRow = new ArrayList<SimplePage>();

    public void addPages(SimplePage page) {
        mPagesRow.add(page);
    }

    public SimplePage getPages(int index) {
        return mPagesRow.get(index);
    }

    public int size(){
        return mPagesRow.size();
    }
}

Sees ImageReference has been deprecated. Use this instead

@Override
    public Drawable getBackgroundForPage(int row, int col) {
        SimplePage page = ((SimpleRow)mPages.get(row)).getPages(col);
        Drawable d = mContext.getResources().getDrawable(page.mBackgroundId);
        return d;
    }