AspectRatioImageView.java

package com.sabdroidex.utils;

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

public class AspectRatioImageView extends AlphaImageView {
    
    public AspectRatioImageView(Context context) {
        super(context);
    }
    
    public AspectRatioImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    
    public AspectRatioImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        Drawable drawable = getDrawable();
        if (drawable != null) {
            int width = MeasureSpec.getSize(widthMeasureSpec);
            int diw = drawable.getIntrinsicWidth();
            if (diw > 0) {
                int height = width * drawable.getIntrinsicHeight() / diw;
                setMeasuredDimension(width, height);
            }
            else
                super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
        else
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}