ResizableImageView.java

package com.darkrockstudios.apps.tminus.views;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * Created by Adam on 8/4/13.
 * Dark Rock Studios
 * darkrockstudios.com
 * http://stackoverflow.com/a/12283909/1366
 */
public class ResizableImageView extends ImageView
{
	public ResizableImageView( Context context, AttributeSet attrs )
	{
		super( context, attrs );
	}

	@Override
	protected void onMeasure( int widthMeasureSpec, int heightMeasureSpec )
	{
		Drawable d = getDrawable();

		if( d != null )
		{
			// ceil not round - avoid thin vertical gaps along the left/right edges
			int width = MeasureSpec.getSize( widthMeasureSpec );
			int height = (int) Math.ceil( (float) width * (float) d.getIntrinsicHeight() / (float) d.getIntrinsicWidth() );
			setMeasuredDimension( width, height );
		}
		else
		{
			super.onMeasure( widthMeasureSpec, heightMeasureSpec );
		}
	}

}