Android Studio 3.2.1, XML bad indent format
On Android Studio 3, Go to :
Preferences > Editor > Code style > XML then on Scheme switch to Default instead of Project.
You can then use those shortcuts to indent your code:
Windows:
Ctrl + Alt + L
macOS:
Option + Command + L
You can edit your code styles under File > Settings > Editor > Code Style > XML
If you want to preview a specific file, just paste that file's contents into the preview window.
Open File > Settings > Editor > Code Style > XML
Now in layout file make sure you have selected wrap attributes as Wrap always.
Screenshot