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    <p>Color Banding Solved ooooooooooyyyyyyyeaaaaaaaaaa</p> <p>I solved color banding in two phases</p> <p>1) * when we use the BitmapFactory to decode resources it decodes the resource in RGB565 which shows color banding, instead of using ARGB_8888, so i used BitmapFactory.Options for setting the decode options to ARGB_8888</p> <p>second problem was whenever i scaled the bitmap it again got banded</p> <p>2) This was the tough part and took a lot of searching and finally worked * the method Bitmap.createScaledBitmap for scaling bitmaps also reduced the images to RGB565 format after scaling i got banded images(the old method for solving this was using at least one transparent pixel in a png but no other format like jpg or bmp worked)so here i created a method CreateScaledBitmap to scale the bitmap with the original bitmaps configurations in the resulting scale bitmap(actually i copied the method from a post by logicnet.dk and translated in java)</p> <pre><code> BitmapFactory.Options myOptions = new BitmapFactory.Options(); myOptions.inDither = true; myOptions.inScaled = false; myOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//important //myOptions.inDither = false; myOptions.inPurgeable = true; Bitmap tempImage = BitmapFactory.decodeResource(getResources(),R.drawable.defaultart, myOptions);//important //this is important part new scale method created by someone else tempImage = CreateScaledBitmap(tempImage,300,300,false); ImageView v = (ImageView)findViewById(R.id.imageView1); v.setImageBitmap(tempImage); </code></pre> <p>// the function</p> <pre><code>public static Bitmap CreateScaledBitmap(Bitmap src, int dstWidth, int dstHeight, boolean filter) { Matrix m = new Matrix(); m.setScale(dstWidth / (float)src.getWidth(), dstHeight / (float)src.getHeight()); Bitmap result = Bitmap.createBitmap(dstWidth, dstHeight, src.getConfig()); Canvas canvas = new Canvas(result); //using (var canvas = new Canvas(result)) { Paint paint = new Paint(); paint.setFilterBitmap(filter); canvas.drawBitmap(src, m, paint); } return result; } </code></pre> <p>Please correct me if i am wrong. Also comment if it worked for you.</p> <p>I am so happy i solved it, Hope it works for you.</p>
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