Android layout with square buttons

Question

I want to make a layout similar to this one:

www.ImageBanana.net - layout.png http://www.imagebanana.com/img/9kmlhy66/thumb/layout.png

Four square buttons on

Answer 1

import android.content.Context;
import android.util.AttributeSet;
import android.widget.LinearLayout;

public class SquareLayout extends LinearLayout {
    // Desired width-to-height ratio - 1.0 for square
    private final double mScale = 1.0;

    public SquareLayout(Context context) {
        super(context);
    }

    public SquareLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);

        if (width > (int)((mScale * height) + 0.5)) {
            width = (int)((mScale * height) + 0.5);
        } else {
            height = (int)((width / mScale) + 0.5);
        }

        super.onMeasure(
                MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY),
                MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)
        );
    }
}