将UIBarButtonItem添加到Xamarin IOS中的导航栏

Question

如何将自定义UIBarButtonItem添加到导航栏右侧。

public UIBarButtonItem btn_Cart {get; set;}

public DetailedController (){
string buttonTitle = "One";
btn_Cart = new UIBarButtonItem (buttonTitle, UIBarButtonItemStyle.Bordered, null);
btn_Cart.Clicked += (s, e) => { new UIAlertView ("click!", "btnOne clicked", null, "OK", null).Show (); 
};

}

public override void ViewDidLoad (){
base.ViewDidLoad ();
// Added btn_Cart to RightSide Of Naviation Bar.
this.NavigationItem.SetRightBarButtonItem (btn_Cart, true);
}

它没有添加到navigationItem。

如果我将我的代码更改为

public override void ViewDidLoad (){
this.NavigationItem.SetRightBarButtonItem(
                new UIBarButtonItem(UIImage.FromBundle ("Image.png")
                    , UIBarButtonItemStyle.Plain
                    , (sender,args) => {
new UIAlertView ("click!", "btnOne clicked", null, "OK", null).Show ();
                    })
                , true);
}

//它被添加到右侧的NavigationItem。

public class DetailedTabBarController : UITabBarController {

        public override void ViewDidLoad (){
            base.ViewDidLoad ();
            this.NavigationItem.SetRightBarButtonItem(
            new UIBarButtonItem(UIImage.FromBundle ("/Images/Image.png"),
                    UIBarButtonItemStyle.Plain, 
                    (sender,args) => {
                Console.WriteLine("Do Some Action!");
                }), true);
            }
}

我不想这样添加。

任何人都可以建议我将UIBarButtonItem添加到右侧的NavigationItem。 @All先谢谢

Answer 1

首先创建一个UIBarButtonItem。然后将其添加到NavigationItem。这是示例代码

UIBarButtonItem btn = new UIBarButtonItem ();
btn.Image = UIImage.FromFile("Image.gif");
btn.Clicked += (sender , e)=>{System.Diagnostics.Debug.WriteLine("Button tap");};
NavigationItem.RightBarButtonItem = btn;