Spinner disappearance stutters

[kszuba]

Situation:
When user provide login, password and click "log in" then I show
[FTProgressIndicator showProgressWithmessage:nil userInteractionEnable:NO];
and after successful, app change controller :
- (void)loginSuccessful {
[FTProgressIndicator dismiss];
[[AMMainViewController sharedViewController]changeToControllerType:AMViewControllerTypeHome];
}

where changeToController looks like:
`- (void)changeToControllerType:(AMViewControllerType)type userInfo:(NSDictionary *)userInfo {
UIViewController *newVC = [AMViewControllerFactory viewControllerWithType:type];

if ([newVC isKindOfClass:[UINavigationController class]]) {
    UIViewController *embededViewController = ((UINavigationController *)newVC).viewControllers.firstObject;
    if ([embededViewController respondsToSelector:@selector(setUserInfo:)]) {
        [embededViewController performSelector:@selector(setUserInfo:) withObject:userInfo];
    }
} else if ([newVC respondsToSelector:@selector(setUserInfo:)]) {
    [newVC performSelector:@selector(setUserInfo:) withObject:userInfo];
}

[self.currentVC willMoveToParentViewController:nil];
[self addChildViewController:newVC];

[self.view addSubview:newVC.view];
[newVC.view mas_makeConstraints:^(MASConstraintMaker *make) {
    make.edges.equalTo(self.view);
}];

[newVC.view layoutIfNeeded];

newVC.view.alpha = 0.0f;
[self setNeedsStatusBarAppearanceUpdate];
[UIView animateWithDuration:0.25f
                      delay:0
                    options:UIViewAnimationOptionCurveEaseInOut
                 animations:^{
                     newVC.view.alpha = 1.0f;
                 } completion:^(BOOL finished){
                     [self.currentVC.view removeFromSuperview];
                     [self.currentVC removeFromParentViewController];
                     [newVC didMoveToParentViewController:self];
                     self.currentVC = newVC;
                 }];

} `

And indicator stutter. You can check it out or tell me how to get around this?

[aarongfischer]

I am seeing the same or similar behavior, with a flickering/stuttering spinner.

Also, I am seeing the spinner show up in different x/y locations in one view controller vs. another.

Code for show:
FTProgressIndicator.setProgressIndicatorStyle(.dark)
FTProgressIndicator.showProgressWithmessage("message", userInteractionEnable: false)

Code for hide:
FTProgressIndicator.dismiss()

[liufengting]

I think the most possible reason for flickering/stuttering spinner is that it didn't stop timer when showing a new one. I just fixed it and hope it works...