Ios5 programming -- added the use of step per.

In ios5, a new control, stepper, is added, which is very simple to use.

1. Create a single view application and open viewcontroller. XIB.

2. Add a stepper control to the view.

3. For example, set Related Properties

The value of stepper is a float type

4. Set the response function of stepper's value changed practice and implement the following:

-(Ibaction) Steppervaluechanged :(ID) Sender {

Uistepper* ST = (Uistepper*) Sender;

Nslog(@ "% F", St.Value);

}

Other functions are the same as slider.

Uicatalog, an official example provided by Apple, is a very useful example. It basically contains how to use all controls. Many new users learn how to use controls through this example, now this example has been updated and added to the stepper demo. Therefore, this example must be compiled in xcode4.2.