I cannot find a way to prevent Android Studio from automatically loading the last project in use. I want it open me the beggining window with the list of projects available and not loading the last used automatically.
The location of Reopen last project on startup was moved to Settings => Appearance & Behavior => System Settings with new Android Studio, just uncheck it!
In Appearance & Behavior -> System Setting , also you can change some other setting about open or save projects
Android Studio 2.1.1 MacOS X
UPDATE
This screen can accessed in Android Studio 3.1.3 on MacOS High Sierra by selecting the Android Studio -> Preferences menu
Android Studio or Intellij IDEA:
From the menu go to :
File > Settings >Appearence & Behavior > System Settings.
disable the option:
Reopen last project on startup
Open Settings, go to General and remove check from Reopen last project on startup
If the project that is being reopened is causing android studio to stop responding you may not be able to get to the dialog. I got round this by deleting
~/Library/Preferences/AndroidStudio3.3/options/recentProjects.xml
This allowed me to temporarily start android studio without reopening the offending project, and then permanently disable the reopening feature using the dialog others have mentioned
来源：https://stackoverflow.com/questions/27646010/android-studio-automatic-project-load