How to check the “Allow Full Access” is enabled in iOS 8?

Question

In iOS 8, when develop a custom keyboard and set RequestsOpenAccess property to YES in info.plist, there is a toggle button at Settings-> Add New Keyboard named \"Allow Full

Answer 1

iOS 11 no longer requires any hacks.

  override var hasFullAccess: Bool {
    if #available(iOS 11.0, *) {
      return super.hasFullAccess// super is UIInputViewController.
    }
    if #available(iOS 10.0, *) {
      let original: String? = UIPasteboard.general.string
      UIPasteboard.general.string = " "
      let val: Bool = UIPasteboard.general.hasStrings
      if let str = original {
        UIPasteboard.general.string = str
      }
      return val
    }
    return UIPasteboard.general.isKind(of: UIPasteboard.self)
  }