在应用内邀请用户通过testFlight下载内测版本

NSURL *customAppURL = [NSURL URLWithString:@"itms-beta://"];if ([[UIApplication sharedApplication] canOpenURL:customAppURL]) {    // TestFlight is installed    // Special link that includes the app's Apple ID    customAppURL = [NSURL URLWithString:@"https://beta.itunes.apple.com/v1/app/123456789"];     [[UIApplication sharedApplication] openURL:customAppURL];}

跳转到TestFlight下载app: https://beta.itunes.apple.com/v1/invite/some_key