I have a UIViewController with two sub UIViews. In the first UIView I created a UIView with a green background. After pushing a button in the UIViewController I change this to a red background.
And now I want to change it to a purple background, but since i changed the background in the UIViewController I'm not able to change it (again).
UIViewA.h
@interface UIViewA : UIView
@property UIView *colorView;
UIViewA.m
...
colorView = [[UIView alloc]init];
[colorView setBackgroundColor:[UIColor greenColor]];
...
UIViewController.h
#import "UIViewA.h"
#import "UIViewB.h"
@interface MainViewController : UIViewController
@property UIViewA *viewA;
@property UIViewB *viewB;
UIViewController.m
...
viewA = [[UIViewA alloc]init];
viewB = [[UIViewB alloc]init];
...
-(void)changeColor
{
[[viewA colorView] setBackgroundColor:[UIColor redColor]];
}
UIViewB.h
#import "UIViewA.h"
@interface UIViewB : UIView
@property UIViewA *ViewA;
UIViewB.m
...
ViewA = [[UIViewA alloc]init];
[[ViewA colorView] setBackgroundColor:[UIColor greenColor]];
// ^^ That rule doesn't seem to work. No errors were given.
...
EDIT: A shorter example of what I'm trying to do.
If I understand you right, you want to change viewA's background color in viewB. What you can do is in viewcontroller.m, after you have created viewB, assign viewB.viewA = self.viewA
. and in viewB.m, do not create a new viewA, instead use the property self.viewA, thus you can change the viewA's background color. In viewB.m
[[self.viewA colorView] setBackgroundColor:[UIColor greenColor]];
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