活动指示器的创建:
[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:<#(UIActivityIndicatorViewStyle)#>;
其中UIActivityIndicatorViewStyle是一个枚举类型,一下为其的三种形式
typedefNS_ENUM(NSInteger, UIActivityIndicatorViewStyle) {
UIActivityIndicatorViewStyleWhiteLarge,
UIActivityIndicatorViewStyleWhite,
UIActivityIndicatorViewStyleGray,
};
UIActivityIndicatorView *aiv = [[UIActivityIndicatorViewalloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[aiv startAnimating];//活动指示器开始
[aiv stopAnimating];//活动指示器停止
aiv.hidden = YES;//记得隐藏
网络指示器:
UIApplication *app = [UIApplicationsharedApplication];
app.networkActivityIndicatorVisible =YES;