问题描述
所以我正在构建一个使用按钮图像的应用程序。我提供了普通图像和@ 2x图像，但是我不能确定应该使用哪一个。如果我使用normal.png或[email protected]，基本上没有差别。但是我已经读过使用@ 2x需要更多内存，所以我觉得我不应该这样做。但是，当我在iPad模拟器中启动我的应用程序时，使用正常大小的图像看起来很糟糕，因为它需要调整它们的大小。当我使用@ 2x图像时，它看起来很正常。那么关于我应该怎么做的任何建议呢？
So I'm building an app that uses images for buttons. I provided both normal images and @2x images, however I'm not totaly sure which one I should use. There is basicly no diffrence if I use normal.png or [email protected]. However I've read that using @2x takes more memory, so I feel like I shouldn't do it. However, when I start my app in the iPad simulator, it looks bad when using normal size images, because it needs to resize them. When I use the @2x image, it looks normal. So any suggestions on how I should approach this?
推荐答案
你应该包含 .png 和 @ 2x.png 在您的应用程序中支持视网膜设备。这为您的用户提供了良好的用户体验。
You should include images both with .png and @2x.png within your application to support retina devices. This provides a nice user experience for your user.
在整个代码中，您没有明确指定 @ 2x 后缀，因为操作系统将为您处理。例如，如果在项目中包含 image.png 和 [email protected] ，则可通过以下方式访问它：
Throughout your code, you do not explicitly specify the @2x suffix, as the OS will take care of that for you. For example, if you include image.png and [email protected] in your project, and access it via:
UIImage* image = [UIImage imageNamed:@"image"];
操作系统会为您选择正确的图像（ .png 用于非视网膜设备， @ 2x.png 用于视网膜设备）。只要遵循一般的内存管理准则，您就不必担心每个内存使用的差异。
The OS will select the correct image for you (.png for non retina devices, @2x.png for retina devices). You don't need to worry about the memory usage difference for each one, as long as you follow general memory management guidelines.
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