change global Contant value

Question

Good afternoon,

I would like to know if it is possible to change the value received by a global constant and set another value. For example, I take the value of the color that is set in the edge lighting settings of Samsung devices, and I want my app to send a new color to this.

public class EdgeLightingSettings {

    public static final class Global {
        public static final String EDGELIGHTING_CUSTOM_COLOR = "edgelighting_custom_color";


    }
}

Here I take the value that is customized by the user in the native edge screen configuration. I want to change this in the code.

Is there a way? O.o

Answer 1

By definition of language, any constant (that in java is represented by the modifier final) cannot be changed.

If you want a global value, but it can be changed, you should remove the modifier final and keep only the modifier static. In your case, I would:

public class EdgeLightingSettings {

    public static class Global {
        public static String EDGELIGHTING_CUSTOM_COLOR = "edgelighting_custom_color";
    }
}

That way, you could change the value of EDGELIGHTING_CUSTOM_COLOR calling for:

Global.EDGELIGHTING_CUSTOM_COLOR = "Seu valor";