In general, there is no reliable way to tell another application to open it at a certain point. The best you can usually hope for is convincing the application to try to open a URL that uses the custom scheme that you registered with your application. I went through the instagram docs documentation , and the only URL-based callback mechanism seems to be authentication (not passing the image through post-authorization). You can examine the API again to see if you can opt out of sharing, but I havenβt seen anything about actually posting the photo on behalf of the user (it looks like they keep it for themselves).
Good luck
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