How to use RoundedBitmapDrawable

 

Has anyone managed to use RoundedBitmapDrawable ? Correct me if I'm wrong, but to my understanding, it makes a circular image from a regular rectangular image.

What I've tried so far is this 

RoundedBitmapDrawable.createRoundedBitmapDrawable(getResources(), BitmapFactory.decodeResource(getResources(), iconResource))

What I tried to achieve: transform any image to a circular image and show it using an ImageView.

In case I mixed things up and all that I said is non-sense. Is it possible (or simpler) to do it with any of the new framework? (Android L or new Support Library)

您需要设置拐角半径。 

Resources res = getResources();
Bitmap src = BitmapFactory.decodeResource(res, iconResource);
RoundedBitmapDrawable dr =
    RoundedBitmapDrawableFactory.create(res, src);
dr.setCornerRadius(Math.max(src.getWidth(), src.getHeight()) / 2.0f);
imageView.setImageDrawable(dr);

It may be a late reply but i hope that it will be helpful to others

If your image has same width and height then you can simply set the setCircular to true to get Rounded Bitmap as follows 

RoundedBitmapDrawable drawable = RoundedBitmapDrawableFactory.create(getResources(),your_bitmap);
drawable.setCircular(true);

i am also finding rounded image view for efficiency i have search all third party library i found that all of them they are creating new bitmap which is tedious task in list its consuming more memory

refereed library:

  • http://ruibm.com/2009/06/16/rounded-corner-bitmaps-on-android/
  • https://github.com/vinc3m1/RoundedImageView
  • https://github.com/lopspower/CircularImageView

    • from this library i have used

    https://github.com/vinc3m1/RoundedImageView

    because A fast ImageView (and Drawable) that supports rounded corners (and ovals or circles) based on the original example from Romain Guy

  • does not create a copy of the original bitmap
  • does not use a clipPath which is not hardware accelerated and not anti-aliased.
  • does not use setXfermode to clip the bitmap and draw twice to the canvas.
    • 链接地址: http://www.djcxy.com/p/31412.html

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