You need to create a UIButton type UIButtonTypeInfoLight (or, depending on the color of the UIButtonTypeInfoDark ). Then you use this button as a custom view for the UIBarButtonItem :
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight]; UIBarButtonItem *infoButtonItem = [[[UIBarButtonItem alloc] initWithCustomView:infoButton] autorelease]; myToolbar.items = [NSArray arrayWithObjects:infoButtonItem, nil];
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