How do I authenticate in DropboxAPI v2 for Android?

Question

I\'ve just started out and I\'m following this tutorial

https://www.dropbox.com/developers/documentation/java#tutorial

But there\'s no login. Nothing asks yo

Answer 1

Unfortunately, there isn't much out there in terms of documentation for this flow. Here is how I was able to successfully authenticate users. First, you want to launch the authentication flow with Dropbox's auth activity:

import com.dropbox.core.android.Auth
....
Auth.startOAuth2Authentication(context, context.getString(R.string.dbx_api_app_key))

After a user has successfully authenticated, call the following method in the onResume method of the activity you started the Dropbox activity from:

@Override
public void onResume() {
    super.onResume();
    String token = Auth.getOAuth2Token()
}

The token that you receive here should be used when you create your instance of the DbxClientV2 like so:

DbxRequestConfig requestConfig = DbxRequestConfig.newBuilder(MyUtils.getVersionText(context))
                .withHttpRequestor(OkHttp3Requestor(OkHttp3Requestor.defaultOkHttpClient()))
                .build()

DbxClientV2 dbxClient = DbxClientV2(requestConfig, accessToken)

You'll also need the following dependencies in your build.gradle file:

implementation 'com.squareup.okhttp:okhttp:2.7.5'
implementation 'com.squareup.okhttp3:okhttp:3.7.0'