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我正尝试使用iOS 7/8样式模糊视图控制器，该视图控制器通过xamarin与故事板界面出现在视图控制器上，并将其连接到导航控制器上，但我想实现的是用户必须首先登录，因此理论上菜单不应该先出现，但我希望我的登录故事Board文件。如何以编程方式设置视图控制器
其中xamarin在此基础上https://github.com/romaonthego/REFrostedViewController
// Override FinishedLaunching. This executes after the app has started.
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
this.Window = new UIWindow(UIScreen.MainScreen.Bounds);
// ViewControllers
var aRootVC = new DEMOHomeViewController();
var secondVC = new loginViewController();
var loginViewControl = new loginViewController();
//define the menu structure
var sections = new List<REMenuItemSection>()
{
new REMenuItemSection()
{
Items = new List<REMenuItem>()
{
new REMenuViewControllerItem()
{
//View exisiting view controller, will be reused everytime the item is selected
Icon = UIImage.FromBundle(@"home-48"),
Title = @"Home",
ViewController = loginViewControl,
},
new REMenuViewControllerItem()
{
//New view controller, will be reused everytime the item is selected
Icon = UIImage.FromBundle(@"about-48"),
Title = @"Payments Missed",
ViewController = secondVC,
},
new REMenuViewControllerItem()
{
//New view controller, will be reused everytime the item is selected
Icon = UIImage.FromBundle(@"about-48"),
Title = @"Payments Made",
ViewController = secondVC,
}, new REMenuViewControllerItem()
{
//New view controller, will be reused everytime the item is selected
Icon = UIImage.FromBundle(@"about-48"),
Title = @"Upload Doucments",
ViewController = secondVC,
},
new REMenuViewControllerItem()
{
//New view controller, will be reused everytime the item is selected
Icon = UIImage.FromBundle(@"about-48"),
Title = @"Update Info",
ViewController = secondVC,
},
new REMenuViewControllerItem()
{
//New view controller, will be reused everytime the item is selected
Icon = UIImage.FromBundle(@"about-48"),
Title = @"Amend I & E",
ViewController = secondVC,
}
},
},
new REMenuItemSection()
{
Title = "Friends Online",
Items = new List<REMenuItem>()
{
new REMenuActionItem()
{
//Action is called, on the UI thread, everytime the item is selected
Icon = UIImage.FromBundle(@"ask_question-48"),
Title = @"Logout",
Command =()=>
{
var uiAlert = new UIAlertView("Logout","Are you sure you want to log out?",null,"No","Yes");
uiAlert.Show();
},
},
},
},
};
内置AC尖锐libary但是，当我打开它去我的登录查看它说以下
无法隐式转换类型UI套件视图控制器，因为它期望ui视图并且不能查看所以如何让我的登录屏幕出现在菜单显示之前
我登录查看班级
public partial class loginViewController : UIView
{
const string serviceId = "ApertureBel";
NSError error;
LAContext context = new LAContext();
partial void touchButton(UIButton sender)
{
//Lets double check the device supports Touch I
if (context.CanEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, out error))
{
var replyHandler = new LAContextReplyHandler((success, error) =>
{
InvokeOnMainThread(() =>
{
if (success)
{
// var homeScreen = (UIViewController)Storyboard.InstantiateViewController("welcome");
// PresentViewController(homeScreen, true,() => { });
}
else
{
var alert = new UIAlertView("Finger Print!", "Sorry Finger Print is not on file.", null, "Aperturer", null);
alert.Show();
}
});
});
context.EvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, "Logging in with Touch ID", replyHandler);
}
else
{
var alert = new UIAlertView("Error", "TouchID not available", null, "Aperture", null);
alert.Show();
}
}
bool CheckLogin(string username, string password)
{
if (password == Helpers.KeychainHelpers.GetPasswordForUsername(username, serviceId, true) && username == NSUserDefaults.StandardUserDefaults.ValueForKey(new NSString("username")).ToString())
return true;
else
{
return false;
}
}
// partial void buttonLoginClick(UIButton sender)
//{
// if (string.IsNullOrEmpty(txtUserName.Text) | string.IsNullOrEmpty(txtPassword.Text))
// {
// var alert = new UIAlertView("Oops!", "You must enter both a username and password", null, "Oops", null);
// alert.Show();
// return;
// }
// if (CheckLogin(txtUserName.Text, txtPassword.Text))
// {
// var homeScreen = (UIViewController)Storyboard.InstantiateViewController("welcome");
// PresentViewController(homeScreen, true,() => { });
// }
// else
// {
// var alert = new UIAlertView("Login problem", "wrong username", null, "Oops...again", null);
// alert.Show();
// }
//}
}
}