zed zed - 5 months ago 32
Android Question

android: Animate color change from color to color

Assuming I have two colors, and I need to create a real time animation that fastly switches from a color to another.

I tried just to increment the color hexadecimal until I reach the other, but that gave a really bad animation as it showed lots of unrelated colors.

I am using setColorFilter(color, colorfilter) to change the color of an imageview.

Changing the HUE will give me the best visual results? If so, how can I change it for a solid color?

SOLUTION:
I solved it by recursively shifting hue

private int hueChange(int c,int deg){
float[] hsv = new float[3]; //array to store HSV values
Color.colorToHSV(c,hsv); //get original HSV values of pixel
hsv[0]=hsv[0]+deg; //add the shift to the HUE of HSV array
hsv[0]=hsv[0]%360; //confines hue to values:[0,360]
return Color.HSVToColor(Color.alpha(c),hsv);
}

zed zed
Answer

SOLUTION: I solved it by recursively shifting hue

private int hueChange(int c,int deg){
       float[] hsv = new float[3];       //array to store HSV values
       Color.colorToHSV(c,hsv); //get original HSV values of pixel
       hsv[0]=hsv[0]+deg;                //add the shift to the HUE of HSV array
       hsv[0]=hsv[0]%360;                //confines hue to values:[0,360]
       return Color.HSVToColor(Color.alpha(c),hsv);
    }