change text of button and disable button in iOS

[myButton setTitle: @"myTitle" forState: UIControlStateNormal];

Use UIControlStateNormal to set your title.

There are couple of states that UIbuttons provide, you can have a look:

[myButton setTitle: @"myTitle" forState: UIControlStateApplication];
[myButton setTitle: @"myTitle" forState: UIControlStateHighlighted];
[myButton setTitle: @"myTitle" forState: UIControlStateReserved];
[myButton setTitle: @"myTitle" forState: UIControlStateSelected];
[myButton setTitle: @"myTitle" forState: UIControlStateDisabled];

Hey Namratha, If you're asking about changing the text and enabled/disabled state of a UIButton, it can be done pretty easily as follows;

[myButton setTitle:@"Normal State Title" forState:UIControlStateNormal]; // To set the title
[myButton setEnabled:NO]; // To toggle enabled / disabled

If you have created the buttons in the Interface Builder and want to access them in code, you can take advantage of the fact that they are passed in as an argument to the IBAction calls:

- (IBAction) triggerActionWithSender: (id) sender;

This can be bound to the button and you’ll get the button in the sender argument when the action is triggered. If that’s not enough (because you need to access the buttons somewhere else than in the actions), declare an outlet for the button:

@property(retain) IBOutlet UIButton *someButton;

Then it’s possible to bind the button in IB to the controller, the NIB loading code will set the property value when loading the interface.

Assuming that the button is a UIButton:

UIButton *button = …;
[button setEnabled:NO]; // disables
[button setTitle:@"Foo" forState:UIControlStateNormal]; // sets text

See the documentation for UIButton.

If somebody, who is looking for a solution in Swift, landed here, it would be:

myButton.isEnabled = false // disables
myButton.setTitle("myTitle", for: .normal) // sets text

Documentation: isEnabled, setTitle.

Older code:

myButton.enabled = false // disables
myButton.setTitle("myTitle", forState: UIControlState.Normal) // sets text