How to change the title color of app background?

Question

As the image shows, the title of APP turns red when it gets background, but not on all phones.Do anyone knows how to change this color?

Answer 1

So simple, go to res/values/colors.xml file and change the colorPrimary to what color you want:

<color name="colorPrimary">YOUR_REQUIRED_COLOR_HERE</color>

If you need in JAVA, you can also use the answer that @mohammadRezaAbiri gave:

Bitmap bm = BitmapFactory.decodeResource(getResources(), app_icon);
TaskDescription taskDesc = new TaskDescription(getString(R.string.app_name), bm, getResources().getColor(R.color.primary_600));
MainActivity.setTaskDescription(taskDesc);