Posted By

m3000 on 09/05/17


Tagged

bitmap #circular


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Make circuar bitmap


 / Published in: Java
 

this is the code to make the circular bitmap and use it in the image views and other viewers in android technology. at the end of the code the circle mode of bitmap is created by the en um Mode.

  1. private Bitmap getCircleBitmap(Bitmap bitmap) {
  2. final Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
  3. bitmap.getHeight(), Bitmap.Config.ARGB_8888);
  4. final Canvas canvas = new Canvas(output);
  5.  
  6. final int color = Color.RED;
  7. final Paint paint = new Paint();
  8. final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
  9. final RectF rectF = new RectF(rect);
  10.  
  11. paint.setAntiAlias(true);
  12. canvas.drawARGB(0, 0, 0, 0);
  13. paint.setColor(color);
  14. canvas.drawOval(rectF, paint);
  15.  
  16. paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
  17. canvas.drawBitmap(bitmap, rect, rect, paint);
  18.  
  19. bitmap.recycle();
  20.  
  21. return output;
  22. }

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Thank you for sharing. Here's another code to achieve the roundedImageview: ImageView profilePic = (ImageView) findViewById (R.id.userimage); // get bitmap of the image Bitmap imageBitmap = BitmapFactory.decodeResource (getResources (), R.drawable.largeicon); RoundedBitmapDrawable roundedBitmapDrawable = RoundedBitmapDrawableFactory.create (getResources (), imageBitmap); // setting radius roundedBitmapDrawable.setCornerRadius (50.0f); roundedBitmapDrawable.setAntiAlias (true); profilePic.setImageDrawable (roundedBitmapDrawable). more you can find on my website.

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Posted By: JaidaCordell on September 6, 2018

I have a bitmap and I want to crop a circular region from this bitmap. All pixels outside the circle should be transparent. How can I do this? Regards, Jaida from Handmade writings

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