How to undo deleting a module in android Studio

Question

I just deleted a module that contained the source code of my application. For this reason, I cannot debug and play my application in the emulator. In the Project view the folder does exist but in the android view doesn't exist.

Please help!

Answer 1

If you removed just the module not it's contents (through Project Structure dialog) and your module folder is now considered just a generic folder by Android Studio, here's how to bring it back:

Switch to Project mode (of the Project pane), open file .idea/modules.xml (or just hit Ctrl[Cmd] + Shift + N and search for modules.xml)

Add a <module /> tag corresponding to your accidentally deleted module, do Gradle Sync and the module folder will once again be recognized as such.

Here's a sample

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="ProjectModuleManager">
    <modules>
      <module fileurl="file://$PROJECT_DIR$/MODULE_NAME/MODULE_NAME.iml" filepath="$PROJECT_DIR$/MODULE_NAME/MODULE_NAME.iml" />
      <module ...
    </modules>
  </component>
</project>