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Forum Discussion
iOS 17.x can no longer login and allow dropbox access on app
i, something has changed with iOS 17. My app is using the DropboxClient() api to get an auth token, which would show safari and ask for a login. The login works, and they will get the question if t...
It appears HttpListener is the issue, is there another way to use Dropbox in my app? Or to at least authorize the app, because it does work fine on iOS 17 if the app has already been authorized/logged in with iOS 16
Greg-DB
Dropbox Staff
Dropbox Staffphunction As Здравко said, you can omit the redirect URI entirely, in which case the user will be presented with the authorization code directly so they can manually copy/paste it into the app.
Otherwise, to use a redirect URI if you can't use a server, you can use a redirect URI with a custom URL scheme for your app, if you use PKCE in the app authorization flow. A redirect URI with a custom URL scheme would look something like "customappscheme://auth"; you would need to decide on and set the exact strings you want to use and configure that for your app. Refer to your platform's documentation for information on defining and using custom schemes like that.
- I was looking at the example for PKCE, but it still uses httplistener, which I think is the issue. What is the best way to make this work in iOS 17.x? Has the .Net API been tested with iOS 17.x yet?
- Greg-DB
The Dropbox .NET SDK examples happen to use a listener, but the authorization flow itself also supports custom URL schemes when using PKCE.
In any case, the Dropbox .NET SDK is not built for or tested with Xamarin/Maui/iOS in particular. I'll pass this along as a feature request for official support for that, but I can't promise if or when that might be implemented.
Note that, separate from the .NET SDK, Dropbox does offer native SDKs for Swift and for Objective-C meant for use on Apple platforms. Dropbox recommends using these native SDKs for those platforms, as they'll handle most of the work of the authorization flow for you.
OK, thanks. Is there an example currently on line that shows the "customappscheme://auth"; method with PKCE?
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