MainActivity.java

package com.iblancasa.comedoresUGR;

import android.app.Activity;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.wearable.view.GridViewPager;
import android.view.View;
import android.view.View.OnApplyWindowInsetsListener;
import android.view.WindowInsets;

public class MainActivity extends Activity {

    com.iblancasa.comedoresUGR.Menu menu;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Resources res = getResources();
        final GridViewPager pager = (GridViewPager) findViewById(R.id.pager);
        pager.setOnApplyWindowInsetsListener(new OnApplyWindowInsetsListener() {
            @Override
            public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
                final boolean round = insets.isRound();
                int rowMargin = res.getDimensionPixelOffset(R.dimen.page_row_margin);
                int colMargin = res.getDimensionPixelOffset(round ?
                        R.dimen.page_column_margin_round : R.dimen.page_column_margin);
                pager.setPageMargins(rowMargin, colMargin);
                return insets;
            }
        });

        menu = new com.iblancasa.comedoresUGR.Menu(this,pager,getFragmentManager());

    }
}