UIActivityIndicatorView不能通過frame來變大變小,可以用下面方法解決

UIActivityIndicatorView.png

self.activityView = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

self.activityView.center = CGPointMake(iconView.bounds.size.width / 2.0, iconView.bounds.size.height / 2.0);

CGAffineTransform transform = CGAffineTransformMakeScale(1.5, 1.5);    // 變大變小調(diào)這里即可

self.activityView.transform = transform;

[iconView addSubview:self.activityView];

[self.activityView startAnimating];