Android kotlin upload/download to google drive






















The Client ID dialog will appear. Press OK. Finally, enter a name and the package name that we used to create our app. Although the hint refers to the package name in AndroidManifest. We don't need to complete the form that appears, it's optional so press Save and move on. It about lots man, Don't worry! Let's Back to the coding part, Sorry! Upload image. Submit Preview Dismiss. Collapse Expand sanyika05 sanyika05 sanyika I have started programming for a hobby but I hope, one day it turns into much more I have some experience in Arduino, Python and now I learn java for Android apps.

Open the strings. If everything works correctly, you should have a basic UI with three buttons and a status message at the bottom. If the project does not compile or something goes wrong when running, compare your work with each of the steps above.

Since there are only a few classes, you will put all of them in the root source folder. Start with the interface that the listener of your service must implement.

Create a new Kotlin interface named ServiceListener :. This interface will be implemented by MainActivity and used by a service as a way to let the user of the service know when something has happened. Next, create a simple data class for holding the information that the service needs. Create a new data class named GoogleDriveConfig :. The class is not an Android Service, but instead acts as a service for MainActivity.

You will be adding the following code, in order. Therefore, by giving a file and an app folder scope, you tell Google Drive to let you handle files and folders. The mime types are for the type of files you want to allow the user to pick.

Here, you pick. You also have two request codes to use for handling the result of signing in and picking a file. The TAG constant is used for Logging. The last statement returns the GoogleSignInClient. You need to be able to handle the results from the user who is signing in and picking a file in the MainActivity. In the method, you call helper methods or the serviceListener depending on the requestCode. You can check the result against the presence of data instead of resultCode.

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You would need keytool to read the fingerprint. Password for the default Android debug. This will print the keystore details which will include SHA1 fingerprint.

Thank you MG Developer again for this part. Bear in mind that you required to submit for verification before your application goes live. Without verification, you still can access google drive but it will only appear folder and file that your app created.

Now you can start to put some code on Android. Start by add dependencies on Gradle. Copy and paste in your project. Trust in their magic and save your time. Start Google sign in and then create a credential and provide that instance to DriveServiceHelpper. To perform a multipart upload, refer to Perform a multipart upload.

Use this upload type for large files greater than 5 MB and when there's a high chance of network interruption, such as when creating a file from a mobile app. Resumable uploads are also a good choice for most applications because they also work for small files at a minimal cost of one additional HTTP request per upload. To perform a resumable upload, refer to Perform a resumable upload. The Google API client libraries implement at least one of the types of uploads.

Refer to the client library documentation for additional details on how to use each of the types. Send the request. When you perform a simple upload, basic metadata is created and some attributes are inferred from the file, such as the MIME type or modifiedTime. You can use a simple upload in cases where you have small files and file metadata isn't important.

A multipart upload request allows you to send metadata along with the data to upload. Use this option if the data you send is small enough to upload again, in its entirety, if the connection fails. When creating files, files should specify a file extension in the file's name field. For example, when creating a photo JPEG file, you might specify something like "name": "photo.

Subsequent calls to files. A resumable upload allows you to resume an upload operation after a communication failure interrupts the flow of data. Because you don't have to restart large file uploads from the start, resumable uploads can also reduce your bandwidth usage if there is a network failure.

Resumable uploads are useful when your file sizes might vary greatly or when there is a fixed time limit for requests mobile OS background tasks and certain AppEngine requests. You might also use resumable uploads for situations where you want to show an upload progress bar. In addition, it includes a Location header that specifies the resumable session URI:.



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