Swift4.1与Xcode9.3升级后状态栏缓存报错问题咨询

Hey there! Let me break this down for you—this is a super common issue developers ran into when upgrading to Xcode 9.3 and Swift 4.1, and it’s way less worrying than it sounds.

这个提示到底是什么？ #

That "Status bar could not find cached time string image. Rendering in-process" message is an internal debug log from Apple’s iOS SDK (linked to the status bar’s time rendering logic in iOS 11.3, which ships with Xcode 9.3). Apple added this log to troubleshoot their own status bar image caching system, but forgot to hide it from regular developer consoles. It has nothing to do with your code or any customizations—since you’re using the standard status bar, this is 100% a SDK-side quirk.

有没有潜在问题？ #

Short answer: No, this is completely benign. Back when Xcode 9.3 was new, tons of developers saw this exact message, and no one reported actual app issues tied to it. Your app running normally with no UI glitches or crashes confirms this—this log is just noise, not a warning of something broken.

如果看着烦，怎么处理？ #

If you want to clear up the console clutter, you have two easy options:

• Filter the log out: In Xcode’s console search bar, type -Status bar could not find cached time string image (the minus sign tells Xcode to exclude any lines containing that text).
• Upgrade Xcode: Apple fixed this log leak in later versions of Xcode (starting around Xcode 10). If your project can support a newer Xcode version, upgrading will make the message disappear entirely.

内容的提问来源于stack exchange，提问作者mac_eric