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Xcode – How to find iOS header files

in Xcode, given a type or a method name, how can I determine the header file(s) to use? For example, if I add either of these lines to my Xcode project 1. AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo]; 2. AudioServicesPlaySystemSound(kSystemSoundID_Vibrate); the…

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404 Error Handling in Cached Networked Images – Flutter

So i wanted to create a card with an image. I fetched the data and stored it in my news map with key urlToImage as my image url. Its working all fine but when a url such as https://i-invdn-com.investing.com/news/https://i-invdn-com.investing.com/akapi-images/800x450/59149e84fbd2b771f1b6adea95d99dd6_w_800_h_450.jpg where…

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