Should i resize the bitmap before adding to a ImageView or let the ImageView resize the Bitmap?

Question

i have a simple question: Should i resize a bigger bitmap before adding to a ImageView or let the ImageView resize the Bitmap? What's the right way, regarding performance?

Thanks

Answer 1

Consider using scale for ImageView, and don't bother about resizing. You can scale an image like this, for example:

image.setAdjustViewBounds(true);
image.setMaxHeight(50);
image.setMaxWidth(50);
image.setScaleType(ImageView.ScaleType.CENTER_INSIDE);

Answer 2

The bigger the image, the bigger the size, I wouldn't think performance would really be affected but keep things efficient.

You could also place different size images in the different folders for different resolutions:

res/drawable-mdpi/my_icon.png        // bitmap for medium density
res/drawable-hdpi/my_icon.png        // bitmap for high density
res/drawable-xhdpi/my_icon.png       // bitmap for extra high density

Supporting different size screens