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I just heard from a user of my Objective-C app that when my app tries to link to Dropbox, nothing happens. I am using:
[DropboxClientsManager authorizeFromController:[UIApplication sharedApplication] controller:self openURL:^(NSURL *url){ [[UIApplication sharedApplication] openURL:url]; } browserAuth:YES];
and this works all the time, except for this one user. It turns out he has installed the alternate browser "Covenent Eyes" and disabled Saffari on his iPhone. I suggested that he try installing the Dropbox app on his device first, so that the authorization will come from there rather than from the browser. I have not heard back from him, so I suppose it worked.
My question is, can I determine in code if this is happening? If I can, then I can display a message to users advising them to install the Dropbox app or re-enable Saffari. What is the cleanest solution to this?
-Robert Scott
Hopkins, MN
Wait a minute. authorizeFromController is your API. I don't know what it translates into in terms of pure Apple functions. I can't very well take this question to an Apple forum unless I can present the problem using only non-Dropbox concepts. It is not obvious to me that authorizeFromController is equivalent to "Presenting External Application", be it Saffari or some other browser. If you guys can't give me a little more to go on, I can't really pursue this anywhere else.
-Robert Scott
Hopkins, MN
My needs are actually simpler than that. I just need to know when it isn't going to work. Then I can display a message to the user explaining the problem. I can tell them to either install the Dropbox app or enable Safari. I don't really need the Dropbox API to try any heroics with a browser that is probably designed to make things like this difficult.
-Robert Scott
Hopkins, MN
Hi Robert,
I looked into this issue. It's going to be hard on our end to detect this case, but what you can do is check the success of the `openURL` call you make in the closure that you pass the SDK.
For example:
[DBClientsManager authorizeFromController:[UIApplication sharedApplication] controller:self openURL:^(NSURL *url) { BOOL openURLCallSucceeded = [[UIApplication sharedApplication] openURL:url]; NSLog(openURLCallSucceeded ? @"Yes" : @"No"); } browserAuth:YES];
Here, you can use `openURLCallSucceeded` to determine whether or not to show an error message or something. Unfortunately, Apple doesn't make it easy for us to seemlessly pivot to another third-party browser.
Would this be satisfactory for you?
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