The following controls are subclasses of
UIView, and they are useful to display noninteractive information or act as containers.
A progress view is an indicator of progress over time. You can see an example of this control during downloads or when sending an e-mail from the Mail app:
This control is extremely simple. The only property you need to set and read is
progress, a value between
1.0. When this value is
0.0, the progress bar is empty, while it is full when its value is equal to
1.0. You can perform a simple animation if you set the progress value using the