从右向左翻转UIImageViews
在使用诸如阿拉伯语的RTL语言时，iOS会自动翻转整个ViewController，并且在大部分布局(尤其是文本)方面都表现出色.默认行为是翻转布局，但保持UIImageViews相同的方向(因为您通常不希望反转图像).
iOS automatically flips the entire ViewController when using a RTL language like Arabic and does a great job with most of the layout, especially text. The default behavior is to flip the layout but leave UIImageViews the same orientation (since you generally don't want to reverse images).
当手机设置为RTL语言时，是否可以指定某些图像应该翻转(例如箭头)?
Is there a way to specify that some images should be flipped (such as arrows) when the phone is set to a RTL language?
iOS 9包含您可以使用的imageFlippedForRightToLeftLayoutDirection方法，该方法在RTL本地化时会自动翻转UIImageView中的图像.
iOS 9 includes the imageFlippedForRightToLeftLayoutDirection method that you can use, that automatically flips the image in a UIImageView when in an RTL localization.