No highlighted touch-state for MMDrawerButtonItem in iOS7

[TomSwift]

In iOS6 the MMDrawerButtonItem highlights nicely when pressed. On iOS7 this isn't working for me. I tested in the iOS7 simulator using the KitchenSink app, via XCode5 GM.

"Native" UIBarButtonItems in iOS7 do have a highlight state.

I'm unclear why the MMDrawerButtonItem needs to have a custom-view (UIButton). Why can't it just have an image, which I believe would highlight correctly in all cases - iOS6 or iOS7? The image could still be rendered in code. I think the correct way to do this in iOS7 might be to use the iOS7 UIImage imageWithRenderingMode: UIImageRenderingModeAlwaysTemplate functionality. ??? Or maybe that's inherent in a UIBarButtonItem with an image.

EDIT the rationale for the UIButton in a customView is likely that this is the only way to get a borderless button in a navbar in iOS6.

The other thing I don't really care for with the UIButton/CustomView design is the small detail that the touch-up-inside action sender is the UIButton itself, not the UIBarButtonItem. Not a huge deal but inconsistent with UIBarButtonItem. An improvement might be to have the UIButton invoke a selector on the UIBarButtonItem, which would then forward the call to the defined target/selector, passing itself as the sender.

[kcharwood]

I like the idea of having an "asset-less" bundle, but not having a highlighted touch state is a problem. I'd happily take in a pull request that addresses this.

[TomSwift]

You got it.. Pull request made.

[kcharwood]

Taking discussion to #119