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Make any UIView a full fledged notification center
Objective-C Ruby
Branch: master
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Latest commit b6592f1 Nov 3, 2018


A way to quickly add a notification icon to a UIView (iOS6 and up). Support



  RKNotificationHub* hub = [[RKNotificationHub alloc]initWithView:yourView]; // sets the count to 0
  [hub increment]; // increments the count to 1, making the notification visible


    pod 'RKNotificationHub'



  [hub increment];
  @property (nonatomic, assign) int count; //%%% set to a certain number

Combine Actions!


  [hub increment];
  [hub pop];



  //%%% COLOR
  [hub setCircleColor:[UIColor colorWithRed:0.98 green:0.66 blue:0.2 alpha:1]
           labelColor:[UIColor whiteColor]];


  [hub setCircleAtFrame:CGRectMake(-10, -10, 30, 30)]; //frame relative to the view you set it to

  //%%% MOVE FRAME
  [hub moveCircleByX:-5 Y:5]; // moves the circle 5 pixels left and down from its current position

  [hub scaleCircleSizeBy:2]; // doubles the size of the circle, keeps the same center


  [hub hideCount];
  /* shoutout to imkevinxu for this suggestion */


Notification isn't showing up!

  • If the hub value is < 1, the circle hides. Try calling [increment]
  • Make sure the view you set the hub to is visible (i.e. did you call [self.view addSubview: yourView]?)
  • Make sure you didn't call [hideCount] anywhere. Call [showCount] to counter this

It isn't incrementing / decrementing properly!

  • I've written it so that any count < 1 doesn't show up. If you need help customizing this, reach out to me

The circle is in a weird place

  • If you want to resize the circle, use [scaleCircleSizeBy:]. 0.5 will give you half the size, 2 will give you double
  • If the circle is just a few pixels off, use [moveCircleByX: Y:]. This shifts the circle by the number of pixels given
  • If you want to manually set the circle, call [setCircleAtFrame:] and give it your own CGRect

Something else isn't working properly

  • Send me a tweet @cwRichardKim with #RKNotificationHub so that other people can search these issues too
  • Use github's issue reporter on the right
  • Send me an email (might take a few days)


  • 1.0.0 first release with cocoapod
  • 1.0.1 cocoapod allows iOS 7.0
  • 1.0.2 added "hideCount", "showCount", and "count" methods, allowing indeterminate badges with no number
  • 1.0.5 added bubble expansion for larger numbers (gif)
  • 2.0.0 changed count to NSUInteger (removed support for negative counts), made local constants static const
  • 2.0.1 iOS 6 compatability
  • 2.0.2 changed count back to 'int' for better swift compatability
  • 2.0.4 fixed cocoapod update issue

Areas for Improvements / involvement

  • A mechanism for adding a custom animation
  • Singleton option
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