https://github.com/devSC/WSProgressHUD

WSProgressHUD

//Show on the self.view

@implementation ViewController
{
    WSProgressHUD *hud;
}
- ()viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    //Add HUD to view
    hud = [[WSProgressHUD alloc] initWithView:.navigationController.view];
    [.view addSubview:hud];

    //show
    [hud showWithString:Wating... maskType:WSProgressHUDMaskTypeBlack];

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)( * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [hud dismiss];
    });

}

//Show on the window
    //show
    [WSProgressHUD ];

    //Show with mask
    [WSProgressHUD showWithMaskType:WSProgressHUDMaskTypeBlack];

    //Show with mask without tabbar
    [WSProgressHUD showWithStatus:Loading... maskType:WSProgressHUDMaskTypeBlack maskWithout:WSProgressHUDMaskWithoutTabbar];

    //Show with string
    [WSProgressHUD showWithStatus:Loading...];

    //Show with facebook shimmering
    [WSProgressHUD showShimmeringString:WSProgressHUD Loading...];

    //Show with Progress
    [WSProgressHUD showProgress:progress status:Updating...];

    //Show with image
    [WSProgressHUD showSuccessWithStatus:Thanks..];

    //Show with string
    [WSProgressHUD showImage: status:WSProgressHUD]

    //Dismiss
    [WSProgressHUD dismiss];

    //And There have 3 indicator style for your choice
    [WSProgressHUD setProgressHUDIndicatorStyle:WSProgressHUDIndicatorSmall] //small custom spinner

pod WSProgressHUD