Activity indicator UIActivityIndicatorView, uiactivityindicator

Activity indicator UIActivityIndicatorView, uiactivityindicator
The activity indicator UIActivityIndicatorView informs the user that an operation is in progress. 1. Create

UIActivityIndicatorView * activityIndicatorView = [[UIActivityIndicatorView alloc] initWithFrame: CGRectMake (200,200, 30, 30)];

2. attribute settings

ActivityIndicatorView. activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;

ActivityIndicatorView. backgroundColor = [UIColor yellowColor];

/**

The system provides three unique styles

UIActivityIndicatorViewStyleWhiteLarge large white indicator

UIActivityIndicatorViewStyleWhite standard size white indicator <default style>

UIActivityIndicatorViewStyleGray gray indicator for white background

The hidesWhenStoped attribute is set to YES automatically hidden after the indicator is stopped. YES by default

**/

3. Display

[Self. view addSubview: activityIndicatorView];

4. Animation

[ActivityIndicatorView startAnimating]; // start

[ActivityIndicatorView stopAnimating]; // stop