Accessing Google Drive files with Xodo
Google Drive app has recently added an Edit button when previewing a file. Xodo can be used to edit any PDF files. Here are the steps:
Method 1:
1. Select a file inside Google Drive App and click the Edit button.

2. Select Xodo from the choice of apps.

3. Xodo will open your document. You can now edit it.

4. After editing is done, click the system back button to return to Google Drive app.
Then click the system back button again to go back to the files list/grid.
You should see that the modified file is getting uploaded.

5. After your upload is finished, your changes have been synced.
Method 2:
Alternatively, the System Picker can be used to edit Google Drive files as well:
http://feedback.xodo.com/knowledgebase/articles/1889971-access-documents-using-the-system-s-file-picker
Please ensure the Android version of Google Drive official app is installed.
Note, this will not work for Google Chromebooks. Please use method 1 above.
See Also:
Accessing Dropbox files with Xodo
Accessing OneDrive files with Xodo
Syncing files between Android and Windows
See Also:
Accessing Dropbox files with Xodo
Accessing OneDrive files with Xodo
Syncing files between Android and Windows