问题
in my app when i click on refresh button, an activity indicator appears. and when tableView is refreshed then it disappears. i want to use a image instead of that activity indicator in such a way that when i click on refresh that image ll come on the whole screen and when view ll b refreshed it ll disappear. how can i do that? thanx in advance
回答1:
Basically what you need to do is add a "cover page" view over your current view.
These usually work best if you set the alpha to about 50%.
Hitting the button you can call addSubview:coverPage where you init coverPage somewhere with the right attributes.
If you want, cover page can have it's own spinners or labels if necessary.
after your refresh completes, just call [coverPage removeFromSuperview] to dismiss.
回答2:
UIActivityIndicatorView is the spinning thing that is the default busy indicator. It inherits from UIView. If you subclass it and have your own drawRect: implementation you should be able to draw any image you like in place of the spinning bars.
来源：https://stackoverflow.com/questions/5130590/how-to-use-a-image-instead-of-activity-indicator