解决IDEA This version of the rendering library is more recent than your version of IntelliJ IDEA. Please update IntelliJ IDEA

我下载的是最新的4.3SDK，编辑main.xml抛出异常org.jetbrains.android.uipreview.RenderingException: This version of the rendering library is more recent than your version of IntelliJ IDEA. Please update IntelliJ IDEA。

原因是工程是2.3的工程，但IDEA不够智能地使用4.3的SDK去渲染它，解决方案很简单，看下图的鼠标，在下拉框里选择2.3然后重新打开一下：

就会发现正常渲染了：

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