iOS开发每次升级都是一次折磨!下面是mac上装的XCode与iphone设备的iOS系统对应的版本,如果不匹配会造成各种问题!
Xcode 12.2 → iOS 14.2
Xcode 12.1 → iOS 14.1
Xcode 12 → iOS 14
Xcode 11.7 → iOS 13.7
Xcode 11.6 → iOS 13.6
Xcode 11.5 → iOS 13.5
Xcode 11.4 → iOS 13.4

前天使用最新版的Xamarin Forms 4.4提交应用后,今天Apple审核返回信息如下:
Guideline 2.5.1 – Performance – Software Requirements

Your app uses or references the following non-public APIs:
– LinkPresentation.framework
– QuickLookThumbnailing.framework
The use of non-public APIs is not permitted on the App Store because it can lead to a poor user experience should these APIs change.
Continuing to use or conceal non-public APIs in future submissions of this app may result in the termination of your Apple Developer account, as well as removal of all associated apps from the App Store.
Next Steps
If you are using third-party libraries, please update to the most recent version of those libraries. If you do not have access to the libraries’ source, you may be able to search the compiled binary using the “strings” or “otool” command line tools. The “strings” tool can output a list of the methods that the library calls and “otool -ov” will output the Objective-C class structures and their defined methods. These tools can help you narrow down where the problematic code resides. You could also use the “nm” tool to verify if any third-party libraries are calling these APIs.

随着微软放弃Windows Phone,一大堆开发者弃坑!作为XNA的忠实用户,我有很多游戏是基于cocos2d-xna的WP7版本开发的,为了移植,本人对cocos2d-xna做了修改,使它能够运行于尽可能多的平台,而无需修改WP7游戏代码本身!并开源:https://github.com/chengcong/cocos2d-xna 目前支持iOS Android UWP 以及Windows桌面应用。
Android Desktop iOS UWP
Nuget: https://www.nuget.org/packages/cocos2d-xna.Android
https://www.nuget.org/packages/cocos2d-xna.iOS
https://www.nuget.org/packages/cocos2d-xna.Desktop
https://www.nuget.org/packages/cocos2d-xna.UWP