Google Drive Android API Trash Sample app demonstrates trashing of DriveResources via the Google Drive Android API available in Google Play Services. Only DriveResources accessible to an app can be trashed/untrashed. For full API details check Google Drive Android API Reference.

If the DriveResource being trashed/untrashed is a DriveFolder then all child DriveResources will be updated to the same trash state as the DriveFolder being updated. A successful trash/untrash will only occur if all child resources are accessible to your app.

Add DriveFiles or DriveFolders to the currently selected DriveFolder by clicking the appropriate "ADD" button. Long press on a DriveResource to switch its trash status. Note that child resources of DriveFolders take on the same trash state as their parent folder.