Open Radar

 
Summary:
When creating a customized UISegmentedControl using the UIAppearance APIs, the incorrect divider image will be drawn when one of the segments is in the disabled state.

Steps to Reproduce:
1. Create a UISegmentedControl with 2 segments
2. Call [mySegmentedControl setDividerImage:myDisabledSelectedDividerImage forLeftSegmentState:UIControlStateDisabled rightSegmentState:UIControlStateSelected barMetrics:UIBarMetricsDefault]
3. Set segment 0 to be disabled ([mySegmentedControl setEnabled:NO forSegmentAtIndex:0])
3. Observe that the divider image drawn is for the UIControlStateNormal-UIControlStateNormal configuration, not the UIControlStateDisabled-UIControlStateSelected configuration.

Expected Results:

UIControlStateDisabled-UIControlStateSelected divider image is drawn

Actual Results:

UIControlStateNormal-UIControlStateNormal divider image is drawn

Regression:

Only occurs using the UIAppearance API available from iOS 5 onwards.

Notes:

If a background image is used for the UIControlStateDisabled state ([UISegmentedControl setBackgroundImage:forState:barMetrics]), the control will draw this image. It seems to only be the divider image that is a problem. More details on the problem can be found at this stack overflow thread: http://stackoverflow.com/questions/9660330/uisegmentedcontrol-does-not-respect-divider-images-set-for-uicontrolstatedisable