Use the setMaximumLeftDrawerWidth property of the MMDrawerController as
centerContainer?.setMaximumLeftDrawerWidth(UIScreen.mainScreen().bounds.width, animated: true, completion: nil)
You can check the method in MMDrawerController.h
-(void)setMaximumLeftDrawerWidth:(CGFloat)width animated:(BOOL)animated completion:(void(^)(BOOL finished))completion;
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