android - Java Bitmap change hue -

here code:

    public static bitmap processing(bitmap src, float hue) {         int width = src.getwidth();         int height = src.getheight();         bitmap bitmap = bitmap.createbitmap(width, height, src.getconfig());         for(int x = 0; x < width; x++) {             (int y = 0; y < height; y++) {                 int newpixel = huechange(src.getpixel(x, y), hue);                 bitmap.setpixel(x, y, newpixel);             }         }         return bitmap;     }     private static int huechange(int startpixel, float hue) {         float[] hsv = new float[3];       //array store hsv values         color.colortohsv(startpixel,hsv); //get original hsv values of pixel         hsv[0]=hsv[0]+hue;                //add shift hue of hsv array         hsv[0]=hsv[0]%360;                //confines hue values:[0,360]         return color.hsvtocolor(color.alpha(startpixel),hsv);     } 

problem is: processing takes 3300ms if src bitmap size 480x480. , it's long me.

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what fastest way it?

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done!
fastest way use opencv ndk.

this worst possible way this. if ever think of using setpixel- don't. you're wrong.

the right way:

   canvas canvas = new canvas(bitmap);    canvas.drawcolor(color);