apple tv ios update

During the iOS development process, I always knew that updating the UI needed to be in the main thread, but I didn't think much about why it was in the main thread, or why I couldn't update the UI in the child thread. Today I find time to look up the information on the Internet and find out the problem. Ensuring thread safety on a large framework such as Uikit is a major task that can bring huge costs. Uik

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Two years have not developed iOS, and recently began to contact iOS development, found that a lot of old knowledge forgotten, a lot of new knowledge is not known.Recently in the study, some experience to do under the memo, you can also share with you.The return value type of the initialization method (class name, Id,instancetype) The return value of the initialization method is typically set to an ID.

Original address: iOS via itunes Search detects version updates, and prompts the user to update. If we want to detect updates to the app version, we have to get information about the version of the currently running app version and the latest version released on the App Store. The current run version information can be obtained from the bundle version in the Info.plist file: [CPP] view plain copy print? N

) { Let Updateurl:url = Url.init (string: "http://itunes.apple.com/app/id" + appId)! UIApplication.shared.open (UpdateUrl, Options: [:], Completionhandler:nil)}//no longer prompted for Func Noalertagain () { Let Userdefaults = Userdefaults.standard Userdefaults.set (true, Forkey: "No_alert_again") userdefaults.s Ynchronize ()}//jsonstring to dictionary func getdictfromstring (jstring:string), nsdictionary {let Jsondat A:data = Jstring.data (using:. UTF8)! Let dict = try? Jso