restrict users to take screenshot for the same from apple side What do you mean by "Apple side" ? If the question is about screenshots, that's a question that was asked many times. There is no good method for forbidding screen shots. Even if you found something, you will not prevent user from taking a photo with another camera.

Great you found a solution. A few comments on good practices on the forum: describe precisely the erros you get and where you get it. what I am doing is throwing errors is of little use. When you have a solution, explain what you changed. That may be useful for others who will read your problem. Most likely, in your case scoreLabel.text = score you try to give an Int value to a String property. That cannot work. scoreLabel.text = String(score) Now, both sides are String. Have a good continuation.

I got an iPhone stolen 2 years ago. I could localise it several days after, 250 km away… But no way to get it back.

Have you check (in Xcode) the signature of the app ? Select the App in the file browser on the left. Then signing and capabilities. What do you get there ? Did you choose automatically sign ? You should also check that bundle identifier is the same as in info.plist. And do an option-clean build folder. See the discussion here https://developer.apple.com/forums/thread/126326?page=2: …the problem had to do with bundle identifier. I had manually edited the entry in Info.plist but the entry in Signing & Capabilities showed something else.  I changed in Signing & Capabilities and Info.Plist updated to a variable $(PRODUCT_BUNDLE_IDENTIFIER). I then had to clean the build, remove any previous apps installed and rebuild. `

Are Ukranian and Russian, English the only languages in your app ? Did you try with other language, German, French ? Does it occur on simulator or / and on device ?

Have you created localized infoPlist.Strings files ? They should look like: /* (No Comment) */ "CFBundleName" = "App Name"; /* (No Comment) */ "NSCameraUsageDescription" = "App a besoin d'accéder à l'appareil photo pour prendre en photo ou pour un scan."; /* (No Comment) */ "NSPhotoLibraryUsageDescription" = "App a besoin d'accéder à vos photos pour l'utiliser pour vos données personnalisés.";

Yes, it works perfectly.

constructor that I tried that fails What error message do you get ? Could you show the code where you call this ? Did you authenticate as required ? Important Your application must authenticate a local player before you can use any Game Center classes. If there is no authenticated player, your application receives a GKError.Code.notAuthenticated error. For more information on authentication, see Game Center Programming Guide.

I need to connect my phone to the pc  you mean the Mac ? i have the new macbook pro and i don't have any adapter to use AFAIK, you need USB connection to initialise the connection. https://stackoverflow.com/questions/23827168/ios-run-debug-install-builds-over-wi-fi Later, you can run on Wifi, but that does not solve your problem. You should get the appropriate cable.

Yes, you should dispatch to the main queue.

You are trying to have a "reverse cast" !You cannot write:     Double(tempInFLabel.text!) = temp ** But you should write     tempInFLabel.text = String(temp) You can also format this to have a fixed number of decimals (here, 2 decimals): tempInFLabel.text = String(format: "%.2f", temp) latLabel.text = String(format: "%.2f", lat) longLabel.text = String(format: "%.2f", long)

Probably your font does not exist in your system. I tested with           self.titleLabel?.font = UIFont(name: "Helvetica", size: 3) And it works. It works as well with It does not work with "Avenir Next Condensed". It does not work with "Avenir Next Condensed Regular".

You can install an app from Xcode tou your iPhone. But needs a developer's licence to get it permanent.

Don't you have the build history in Archive in Xcode ? But it is really an important practice to save the complete project at least when you publish on the Appstore. Otherwise, what will you do when a user reports a bug on an older version ?

No, the problem is that Regular does not exist for this font. It works as well with It does not work with "Avenir Next Condensed".