Change backgroundcolor for UIButton IPhone

I have a problem. I use a Button as a BarButtonItem. It works fine so far,开发者_如何学C but my backgroundcolor works only if I click on my button. How can I make it so that my backgroundcolor will be set every time ?

 UIButton *redEmergencyButton = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
 redEmergencyButton.frame = CGRectMake(100, 100, 100, 50);

 redEmergencyButton.backgroundColor = [UIColor colorWithRed:0.8 
                                                      green:0.898039215686274509803
                                                       blue:1.0 
                                                      alpha:1.0];    
 [redEmergencyButton setTitle:@"Emergency" 
                     forState:UIControlStateNormal];

 [redEmergencyButton addTarget:self 
                        action:@selector(doEmergency)
              forControlEvents:UIControlEventTouchUpInside];

 UIBarButtonItem *rButton = [[UIBarButtonItem alloc] 
          initWithCustomView:redEmergencyButton];

You can use this line of code for your navigation bar

[self.navigationcontroller.navigationbar setTintColor:[UIColor bluecolor]];

for button use

navigation button there.

Try to use this button instead:

UIBarButtonItem* emergencyButton = [[UIBarButtonItem alloc]initWithTitle:@"Emergency" style:UIBarButtonItemStyleBordered target:self action:@selector(doEmergency)];
[emergencyButton setTintColor: [UIColor colorWithRed:0.8 
                                                  green:0.898039215686274509803
                                                   blue:1.0 
                                                  alpha:1.0];

UIButtonTypeRoundedRect is deprecated in iOS7, Use UIButtonTypeCustom instead for your custom bgColor.

UIButton *redEmergencyButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
 redEmergencyButton.frame = CGRectMake(100, 100, 100, 50);

 redEmergencyButton.backgroundColor = [UIColor colorWithRed:0.8 
                                                      green:0.898039215686274509803
                                                       blue:1.0 
                                                      alpha:1.0];    
 [redEmergencyButton setTitle:@"Emergency" 
                     forState:UIControlStateNormal];

 [redEmergencyButton addTarget:self 
                        action:@selector(doEmergency)
              forControlEvents:UIControlEventTouchUpInside];

 UIBarButtonItem *rButton = [[UIBarButtonItem alloc] 
          initWithCustomView:redEmergencyButton];