Q:

Android UI design automatic ImageView re-size

An ImageView gets an image and wraps the content so if the image has dimensions like 100x100, the ImageView has the same dimensions.  I want to specify only the layout_height of this ImageView and when it matches the image to re-size properly the layout_width of the ImageView. 
Here is an example:
image size = 100x100;
ImageView's layout_height = 200;
ImageView's layout_width should become 200 not 100. 
Is this possible? 

A:

You'd need to create a custom ImageView and override onMeasure to make the view always square. 
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);

    SQUARE_DIMENSION  = this.getMeasuredHeight(); // whatever height you want here

    this.setMeasuredDimension(SQUARE_DIMENSION, SQUARE_DIMENSION);
}

