AS
C:\Users\MM\.AndroidStudio3.1\config\options\jdk.table.xml
IDEA
C:\Users\MM\.IntelliJIdea2018.1\config\options\jdk.table.xml
文档提示：
Android Studio -> Settings -> General -> √ Show quick documentaion on mouse move Delay(ms) 改成200
--- 这样文档显示出来速度就会很快，秒现
<jdk version="2"> <name value="Android API 27 Platform" /> <type value="Android SDK" /> <version value="java version "1.8.0_162"" /> <homePath value="E:/android-sdk" /> <roots> <annotationsPath> <root type="composite"> <root url="jar://$APPLICATION_HOME_DIR$/plugins/android/lib/androidAnnotations.jar!/" type="simple" /> </root> </annotationsPath> <classPath> <root type="composite"> <root url="jar://E:/android-sdk/platforms/android-27/android.jar!/" type="simple" /> <root url="file://E:/android-sdk/platforms/android-27/data/res" type="simple" /> </root> </classPath> <javadocPath> <root type="composite"> <root url="file://E:/android-sdk/docs/reference" type="simple" /> </root> </javadocPath> <sourcePath> <root type="composite"> <root url="file://E:/android-sdk/sources/android-27" type="simple" /> </root> </sourcePath> </roots> <additional jdk="JDK1.8" sdk="android-27" /> </jdk>
主要设置的代码如下两句：
<javadocPath>
<root type="composite">
<root url="file://E:/android-sdk/docs/reference" type="simple" />
</root>
</javadocPath>
<sourcePath>
<root type="composite">
<root url="file://E:/android-sdk/sources/android-27" type="simple" />
</root>
</sourcePath>
Android Studio一直 Fetching Documentation...
原文：https://www.cnblogs.com/bluestorm/p/8960894.html