I only want to upload files to Google Drive

Question

There is a way to create and upload files to the official Google Docs and demo sources.

But there is no way to upload existing files.

I want to know how to upload a file (ex. Sqlite db file) of an Android app to Google Drive.

Thank you

Answer 1

You may want to check the Google Drive Android API on how to manage file content and metadata. You can create files in two ways with the Drive Android API: using the DriveClient.newCreateFileActivityIntentSender method and the CreateFileActivityOptions class; or using the DriveResourceClient.createFile method.

You may also check these links for additional reference:

• How to upload a db file to google drive from android application?
• Android Open and Save files to/from Google Drive SDK
• How to upload a file to Google Drive

Answer 2

private fun handleSignInIntent(resultIntent: Intent) {
    GoogleSignIn.getSignedInAccountFromIntent(resultIntent)
        .addOnSuccessListener {
            Toast.makeText(this, "Sign-in Successful!!", Toast.LENGTH_LONG).show()
            val credentials = GoogleAccountCredential.usingOAuth2(
                this,
                Collections.singleton(DriveScopes.DRIVE_FILE)
            )
            credentials.selectedAccount = it.account
            val drive =
                Drive.Builder(AndroidHttp.newCompatibleTransport(), GsonFactory(), credentials)
                    .setApplicationName("DB BackUp").build()

            driveServiceHelper=DriveServiceHelper(drive)
        }
        .addOnFailureListener {
            Toast.makeText(this, "Sign-in Failed!!", Toast.LENGTH_LONG).show()
        }
    }

// Drive Service Helper class : 
class DriveServiceHelper(private val driveService: Drive) {
    private val executor = Executors.newSingleThreadExecutor()

    fun createFile(filePath: String): Task<String> {
        return Tasks.call(executor,object : Callable<String>{
            override fun call(): String {
                val fileMetadata=File()
                fileMetadata.name="BACKUP_SAMPLE"

                val fileToUpload = java.io.File(filePath)

                val mediaContent = FileContent("*/*", fileToUpload)

                var myFile = File()
                try {
                    myFile=driveService.files().create(fileMetadata, mediaContent).execute()
                } catch (e:Exception){
                    Log.e("DriveException>>", "${e.message} <<<")
                }

                if (myFile==null)
                    throw IOException("Null file received on Creation")

                return myFile.id
            }
        })
    }
}