用MonoGame开发游戏，游戏运行过程中Update和Draw通常是不同步的，Update的执行次数通常会多于Draw。如果需要Update和Draw保持同步即执行次数相同（Update一次Draw一次）只需要在游戏主函数Game1.cs的构造函数中加入：

bridge.net可以将C#代码转换成javascript，基于这种原理就可以将MonoGame游戏的编译成html+js运行于Web平台。

《键盘锁》注重您个人隐私的保护。有时候我们需要某些信息才能为您提供您请求的服务，本隐私权声明解释了这些情况下的数据收集和使用情况。本隐私权声明适用于《键盘锁》APP应用产品的所有相关服务。

《屏锁》注重您个人隐私的保护。有时候我们需要某些信息才能为您提供您请求的服务，本隐私权声明解释了这些情况下的数据收集和使用情况。本隐私权声明适用于《屏锁》APP应用产品的所有相关服务。

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.

今天我来介绍一下XNA的另一个开源实现FNA。FNA与MonoGame的区别在于：FNA的跨平台是基于运行库的而MonoGame的跨平台是基于源码的，也就是说理论上FNA编译好的游戏不需要修改源码就可以运行在不同的硬件平台，而MonoGame需要将源码放到指定平台重新编译才能运行。