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copied!<p>I like answer of arnefm but he made a small mistake (see comments) which I will try to correct:</p> <pre><code>import android.content.Context; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.widget.ImageView; /** * ImageView that keeps aspect ratio when scaled */ public class ScaleImageView extends ImageView { public ScaleImageView(Context context) { super(context); } public ScaleImageView(Context context, AttributeSet attrs) { super(context, attrs); } public ScaleImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { try { Drawable drawable = getDrawable(); if (drawable == null) { setMeasuredDimension(0, 0); } else { int measuredWidth = MeasureSpec.getSize(widthMeasureSpec); int measuredHeight = MeasureSpec.getSize(heightMeasureSpec); if (measuredHeight == 0 && measuredWidth == 0) { //Height and width set to wrap_content setMeasuredDimension(measuredWidth, measuredHeight); } else if (measuredHeight == 0) { //Height set to wrap_content int width = measuredWidth; int height = width * drawable.getIntrinsicHeight() / drawable.getIntrinsicWidth(); setMeasuredDimension(width, height); } else if (measuredWidth == 0){ //Width set to wrap_content int height = measuredHeight; int width = height * drawable.getIntrinsicWidth() / drawable.getIntrinsicHeight(); setMeasuredDimension(width, height); } else { //Width and height are explicitly set (either to match_parent or to exact value) setMeasuredDimension(measuredWidth, measuredHeight); } } } catch (Exception e) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); } } } </code></pre> <p>Thus your <code>ImageView</code> will be scaled properly and will have no dimension problems if (for instance) put inside of <code>ScrollView</code></p>

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