[1] Create Files   |   Drive REST API   |   Google Developers ( 版) https://developers.google.com/drive/web/integrate-create

  file.setMimeType("application/vnd.google-apps.drive-sdk");

[2] Using the Google APIS Client Library for Java to integrate with Drive on Android   |   Drive API for Android   |   Google Developers ( 版) https://developers.google.com/drive/android/java-client

The MIME type application/vnd.google-apps.drive-sdk.YOUR_APP_ID. This is an optional type that allows the app to open shortcuts.