How can I show a progress bar in iOS app while my data is being downloaded synchronously from the server?
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How can I show a progress bar in iOS app while my data is being downloaded synchronously from the server?
You can’t. When you fetch data synchronously, the fetching happens in the main thread and it blocks it while fetching and the UI uses the main thread to update itself, so until the fetching is complete you can’t update anything on the UI. You should fetch asynchronously (in another thread) and update the UI (which runs on the main thread) on some checkpoints.