How can I change the global tint color programmatically? [duplicate]

Question

My project needs to switch between 2 different global tint values. How can I do this programmatically?

Microgamete

Answer 1

Change the tint color of the UIWindow of the application. You can either use the [[UIApplication sharedApplication] keyWindow] but better is to use [[UIApplication sharedApplication] delegate].window.

Urinary

this is the code I have wrote: UIWindow* mWindow = [[UIApplication sharedApplication] keyWindow]; mWindow.tintColor = [UIColor themeColorNamed:@"themeColour"]; CEAFDC also suggested a good answer. Which is most correct? – Microgamete

You say you need to change the tint in runtime, in which case this is a better solution. – Latoyialatreece

Answer 2

UIAppearance is the answer! It sets property to all the objects of that class (and subclasses).

[[UIView appearance] setTintColor:(UIColor *)]

You can change the backgroudColor of all the buttons too

[[UIButton appearance] setBackgroundColor:(UIColor *)]

Emulsify

hrmm I was about to do this: UIWindow* mWindow = [[UIApplication sharedApplication] keyWindow]; mWindow.tintColor = [UIColor themeColorNamed:@"themeColour"]; Is this incorrect? Should I just do UIView appearance instead? It is the global value I need to change... but I guess everything is a view? – Microgamete

UIAppearance is recommended, it will change the tint color of all subclasses too. Like buttons, toolbars... – Emulsify

@CEAFDC: Any UIView descendant will inherit the superview's tintColor if it isn't explicitly set. – Ninette

Yeah, I know. Booth methos will have the same result. But this applies just to tint color, UIAppearance is more general – Emulsify

This method will not change existing controls' tint color after they have been created. If @Microgamete needs to change the tint color in runtime, setting the window's tint color is a better option. – Latoyialatreece

UIView's tintColor does not have UI_APPEARANCE_SELECTOR. See UIView.h. – Fog

Ok, now I'm convinced. Thanks :) UIWindow tintColor is the way to go – Emulsify

There's also an overrideable tintColorDidChange on UIView, described here: developer.apple.com/library/ios/documentation/UIKit/Reference/… – Trismus