Mar 20, 2011 · How to draw a bitmap with a given color set as transparent? For example I want all white pixels to be transparent. You need to set the Alpha value for the paint you're passing to the Bitmap. http://developer.android.com/reference/android/graphics/Paint.html#setAlpha%28int%29. Values vary from 0-255. EDIT: I don't get it.

Nov 14, 2018 · This tutorial gives you idea to create view with transparent sections. You can create any shape with any size for such views. You can tell your ideas & implementations in the comments.

Drawing translucent bitmaps on Android's Canvas involves using the `Paint` class to set the alpha value, which controls the transparency of the bitmap. This method allows for blending images with background elements seamlessly, enhancing the visual richness of your application.

* create a transparent bitmap from an existing bitmap by replacing certain. * color with transparent. * @param bitmap. * the original bitmap with a color you want to replace. * @return a replaced color immutable bitmap. */ public static Bitmap createTransparentBitmapFromBitmap(Bitmap bitmap, int replaceThisColor) {

Feb 26, 2013 · Using adjustOpacity, I make ImageView's Bitmap be semi-transparent. Bitmap newBitmap = adjustOpacity(orignalBitmap, 10); view.setImageBitmap(newBitmap); view.setBackgroundColor(Color.WHITE); However, Imageview show …

The following examples show how to use android.graphics.Color#TRANSPARENT . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

Jun 2, 2018 · I have a function that takes a Bitmap argument, and is meant to return the same Bitmap but with all black pixels turned into transparent. Bitmap transparent = bitmap.copy( Bitmap.Config.ARGB_8888 , true); int[] pixels = new int[transparent.getHeight()*transparent.getWidth()];

public static Bitmap makeTransparent(Bitmap alphaGray, Bitmap src) { int width = src.getWidth(); int height = src.getHeight(); int [] alphaPix = new int [width * height]; alphaGray.getPixels(alphaPix, 0, width, 0, 0, width, height); int count = width * height; for (int i = 0; i < count; ++i) { alphaPix[i] = alphaPix[i] << 8;

May 11, 2015 · I need to make the black part of image transparent and obtain circular bitmap. the transparent method that i used: public static Bitmap makeTransparent(Bitmap bitmap, int replaceThisColor) { if (bitmap != null) { int picw = bitmap.getWidth(); int pich = bitmap.getHeight(); int[] pix = new int[picw * pich];

Sep 28, 2019 · Last week, someone at work asked me how he could achieve the following: have a dark overlay on a QR code scanner, with only the center part fully transparent. While my initial thought was to...