UISegmentedControl with bar style and tint colour leaks generated images

Originator:percysnoodle
Number:rdar://13715622 Date Originated:23-Apr-2013 02:08 PM
Status:Open Resolved:
Product:iOS SDK Product Version:6.0
Classification:Other bug Reproducible:Always
 
Summary:

When a UISegmentedControl is created with segmentedControlStyle = UISegmentedControlStyleBar and a tint color is set, then the segmented control creates images which are not cleaned up.  This is most obvious when adding segments, but it can also be seen when layoutSubviews is called.

Steps to Reproduce:

1. Create a segmented control with UISegmentedControlStyleBar and any tintColor (e.g. [UIColor purpleColor])
2. Repeatedly add and remove segments
3. Observe memory usage in Instruments

See https://github.com/percysnoodle/SegmentedControlLeakTester for a minimal project which demonstrates the behaviour.

Expected Results:

Memory usage should be bounded.

Actual Results:

Memory usage increases until the application is killed.

Regression:

Yes - this behaviour is not observed in iOS 5.1

Notes:

This behaviour is still present in iOS 6.1.

Comments


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