调用系统的UIImagePickerController按钮颜色不能改变

为啥呢???

因为UIImagePickerController 本身继承 UINavigationController

NS_CLASS_AVAILABLE_IOS(2_0) __TVOS_PROHIBITED @interface UIImagePickerController : UINavigationController

直接设置

    self.imagePickerController.navigationBar.tintColor = [UIColor whiteColor];

OK~

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