Change the bitmap color

Question

There is a bitmap with a white background and an orange triangle inside. What I want to do is change the color of the orange triangle to the color I want, how can I do this with code? I used Porterduff and Color Matrix, but did not get the result I wanted.

Original: click to see the picture

What I want to do with code: click to see the picture

I don't want the white background color to change.

Answer 1

I have used this method to change the color of the bitmap runtime. Give it a try.

 public Bitmap replaceColor(Bitmap src,int fromColor, int targetColor) {
        if(src == null) {
            return null;
        }
     // Source image size 
        int width = src.getWidth();
        int height = src.getHeight();
        int[] pixels = new int[width * height];
        //get pixels
        src.getPixels(pixels, 0, width, 0, 0, width, height);
 
        for(int x = 0; x < pixels.length; ++x) {
            pixels[x] = (pixels[x] == fromColor) ? targetColor : pixels[x];
        }
     // create result bitmap output 
        Bitmap result = Bitmap.createBitmap(width, height, src.getConfig());
        //set pixels
        result.setPixels(pixels, 0, width, 0, 0, width, height);
 
        return result;
    }
}

Define from and to color in the colors.xml

<color name="red">#FB0000</color> 
<color name="yell">#FFC953</color>

and use the above method as below.

iv.setImageBitmap(replaceColor(bitmap,getResources().getColor(R.color.red),getResources().getColor(R.color.yell)));