2016-06-11 28 views
0

我想從一個樣本在xarmians博客中使用觸摸ID,但它給了我一個錯誤。如果使用模擬器註冊測試觸摸的原因通過,我不會否定。但它是失敗的,我有另一個問題是我使用故事板,所以我的問題是我如何推視圖控制器是succsess,並找出爲什麼觸摸ID是faling。試圖使用觸摸ID

partial void touchId(UIButton sender) 
    { 

     //Lets double check the device supports Touch ID 
     if (context.CanEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, out error)) 
     { 
      var replyHandler = new LAContextReplyHandler((success, error) => 
       { 
        InvokeOnMainThread(() => 
         { 
          if (success) 
          { 
           var newVC = new UIViewController(); 


         PresentViewController(newVC, true, null); 
          } 
          else 
          { 
           var alert = new UIAlertView("OOPS!", "Something went wrong.", null, "Oops", null); 
           alert.Show(); 
          } 
         }); 
       }); 
      context.EvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, "Logging in with Touch ID", replyHandler); 
     } 
     else 
     { 
      var alert = new UIAlertView("Error", "TouchID not available", null, "BOOO!", null); 
      alert.Show(); 
     } 
    } 

它越來越到此線的應用

var alert = new UIAlertView("OOPS!", "Something went wrong.", null, "Oops", null); 
+0

你爲什麼不登錄error'的'價值的故事板ID;這將提供一個線索,看看哪裏出了問題。 – Paulw11

+0

@ Paulw11沒有錯誤,正如解釋它只是彈出一個空白的視圖 – rogue39nin

回答

0

的爲別人卡住我必須做到以下幾點。

var homeScreen = (UIViewController)Storyboard.InstantiateViewController("welcome"); 
     PresentViewController(homeScreen, true,() => { }); 

同時確保視圖控制器我想表現被設定爲歡迎