嗨，我对iphone编程很新。我在我的应用程序中使用了DialogViewController。 在下面的代码中，addButton.Clicked事件将生成一个带有部分（表格单元格）的新根元素，我们可以使用这些部分导航到另一个页面。
我需要NavigationItem（RightBarButtonItem）及其在每个导航页面中的事件，以便将数据保存在当前页面中
非常紧急！ 感谢。
我的代码的一部分：
public partial class AppDelegate : UIApplicationDelegate
{
UIWindow _window;
UINavigationController _nav;
DialogViewController _RootVC;
RootElement _rootElement;
UIBarButtonItem _addButton;
UIBarButtonItem _EditButton;
DataBaseAccess da =new DataBaseAccess();
public string _name;
EntryElement StrainName;
//Load all the datas
private bool LoadMain()
{
_window = new UIWindow (UIScreen.MainScreen.Bounds);
_rootElement = new RootElement("Strain")
{
new Section()
{
(StrainName = new EntryElement ("Strain Name","Enter Name",""))
},
new Section()
{
}
};
List ();
_RootVC = new DialogViewController (UITableViewStyle.Grouped,_rootElement,true);
_nav = new UINavigationController(_RootVC);
//_EditButton= new UIBarButtonItem(UIBarButtonSystemItem.Edit);
_EditButton = new UIBarButtonItem("Delete", UIBarButtonItemStyle.Plain,null);
_addButton = new UIBarButtonItem(UIBarButtonSystemItem.Add);
_RootVC.NavigationItem.LeftBarButtonItem = _EditButton;
_RootVC.NavigationItem.RightBarButtonItem = _addButton;
_addButton.Clicked += (sender, e) =>
{
if (StrainName.Value=="")
{
return ;
}
da.Addnew (StrainName.Value);
var strain = new Strains{Name = StrainName.Value};
var strainElement = new RootElement(StrainName.Value)
{
new Section()
{
new StringElement("Name",strain.Name)
},
new Section()
{
new EntryElement("Strain Type"," Enter Type","")
},
new Section()
{
new RootElement("Dispensory")
{
new Section()
{
new EntryElement("Dispensory"," Enter Dispensory name","")
},
new Section()
{
new EntryElement("Address"," Enter Address","")
},
new Section()
{
new EntryElement("City","Enter City","")
},
new Section()
{
new EntryElement("State","Enter State","")
},
new Section()
{
new EntryElement("Zip","Enter Zip","")
},
new Section()
{
new EntryElement("Phone","Enter Phone","")
}
}
},
new Section()
{
new EntryElement("Price","Enter Price per Gram","")
},
new Section()
{
new EntryElement("Rating","Enter Rating 1-10","")
}
};
StrainName.Value = "";
_rootElement[0].Add(strainElement);
};
_EditButton.Clicked += (sender, e) =>
{
Edit_Elements();
};
_window.RootViewController = _nav;
_window.MakeKeyAndVisible ();
return true;
}
public override bool FinishedLaunching (UIApplication app, NSDictionary options)
{
return LoadMain ();
}
//List the data from DB
private void List (){
DataBaseAccess Lobj_da=new DataBaseAccess();
Lobj_da.getstrains ();
List<string> strains=Lobj_da.Starins;
foreach (string name in strains)
{
var strain = new Strains{Name = name};
var strainElement = new RootElement(name)
{
new Section()
{
new EntryElement("Name",strain.Name,strain.Name)
},
new Section()
{
new EntryElement("Strain Type"," Enter Type","")
},
new Section()
{
new RootElement("Dispensory")
{
new Section()
{
new EntryElement("Dispensory"," Enter Dispensory name","")
},
new Section()
{
new EntryElement("Address"," Enter Address","")
},
new Section()
{
new EntryElement("City","Enter City","")
},
new Section()
{
new EntryElement("State","Enter State","")
},
new Section()
{
new EntryElement("Zip","Enter Zip","")
},
new Section()
{
new EntryElement("Phone","Enter Phone","")
}
}
},
new Section()
{
new EntryElement("Price","Enter Price per Gram","")
},
new Section()
{
new EntryElement("Rating","Enter Rating 1-10","")
}
};
StrainName.Value = "";
_rootElement[0].Add(strainElement);
}
}
//
//Edit Changes
void ConfigEdit (DialogViewController dvc)
{
//dvc.NavigationItem.RightBarButtonItem = new UIBarButtonItem (UIBarButtonSystemItem.Edit, delegate {
dvc.NavigationItem.LeftBarButtonItem = new UIBarButtonItem("Update", UIBarButtonItemStyle.Plain,null);
dvc.TableView.SetEditing (true, true);
ConfigDone (dvc);
// });
}
void ConfigDone (DialogViewController dvc)
{
dvc.NavigationItem.RightBarButtonItem = new UIBarButtonItem (UIBarButtonSystemItem.Done, delegate {
dvc.TableView.SetEditing (false, true);
ConfigEdit (dvc);
LoadMain();
});
}
public void Edit_Elements ()
{
RootElement _rootElement_Edit;
_rootElement_Edit = new RootElement("Strain")
{
new Section()
{
}
};
DataBaseAccess LEobj_da=new DataBaseAccess();
LEobj_da.getstrains ();
List<string> strains=LEobj_da.Starins;
foreach (string name in strains){
var strain = new Strains{Name = name};
var strainElement = new RootElement(name)
{
new Section()
{
new StringElement("Name",strain.Name)
}
};
_rootElement_Edit[0].Add(strainElement);
}
var dvc = new EditingDialog (_rootElement_Edit, true);
ConfigEdit (dvc);
_nav.PushViewController (dvc, true);
}
} `
答案 0 :(得分：1)
我认为最好的方法是创建一个新的DialogViewController并在那里实现你的保存代码。
答案 1 :(得分：0)
你应该继承UINavigationView的子类，你的所有视图都应该从它继承