IOS - 网络指示器

#pragma mark Activity methods

- (void)openActivity

{

    // 添加网络指示器

    activityIV = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

    [activityIV setFrame:CGRectMake(0, 0, 30, 30)];

    [activityIV setCenter:CGPointMake(self.view.center.x, self.view.center.y)];

    [self.view addSubview:activityIV];

    [activityIV setHidesWhenStopped:YES];

    [activityIV setHidden:NO];

    [activityIV startAnimating];

    

    // 在状态栏显示有网络请求的提示器

    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

}

 

- (void)closeActivity

{

    // 关闭网络指示器

    [activityIV setHidden:YES];

    [activityIV stopAnimating];

    

    // 在状态栏关闭有网络请求的提示器

    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

}