问题
When I build and run my app through Xcode on my real device I get a popup saying:
AppName May Slow Down Your iPhone
The developer of this app needs to update it to improve its compatibility.
I dont see any memory issues, and I never had any problem with my app crashing.
So what is causing this scary message?
回答1:
This isn't a memory or a crash issue - it's Apple asking developers to update their apps with only 32-bit support with 64-bit support.
You must build a 64-bit binary with your existing app. To do so:
Start by building the app for the 64-bit runtime, fixing any warnings that occur as well as searching your code for specific 64-bit issues. For example:
- Make sure all function calls have a proper prototype.
- Avoid truncating 64-bit values by accidentally assigning them to a 32-bit data type.
- Ensure that calculations are performed correctly in the 64-bit version of your app.
- Create data structures whose layouts are identical in the 32-bit and 64-bit versions of your app (such as when you write a data file to iCloud).
There's more information in Apple's documentation on porting your app to 64-bit as well.
来源：https://stackoverflow.com/questions/40597208/ios-10-1-1-popup-saying-application-may-slow-down-your-iphone