TextField按钮动作不工作

本文关键字：工作 按钮 TextField | 更新日期: 2023-09-27 18:12:29

我创建了自定义类LoginView.cs UIView为用户名和密码添加了loginButton。

现在我添加了UIView Call到我的LoginViewController.cs类

当我构建并运行应用程序时，它显示登录框，两个文本字段和一个按钮。文本框上的操作不起作用。当文本框有焦点时键盘不会加载

这是我的自定义视图类loginview。cs

    using System;
    using System.Drawing;     
    using MonoTouch.Foundation;
    using MonoTouch.UIKit;
    namespace DemoHouse
    {
        class LoginView : UIView
        {      
              UIView view_Login;
              UITextField txt_username;
            public readonly UITextField txt_password;
            public readonly UIButton btn_Login;
            public LoginView (string loginView){
                float frame = UIScreen.MainScreen.Bounds.Width;
                Add (view_Login = new UIView (new RectangleF (20, 60,frame-40, 200)) {
                    BackgroundColor = UIColor.Red,
                });
                float subFrame = view_Login.Bounds.Width;
                view_Login.AddSubview(txt_username = new UITextField (new RectangleF (20, 20, subFrame-40, 31)){
                    BackgroundColor = UIColor.White,
                });
                view_Login.AddSubview(txt_password = new UITextField (new RectangleF (20, 70, subFrame-40, 31)){
                    BackgroundColor = UIColor.White
                });
                view_Login.AddSubview (btn_Login = new UIButton (new RectangleF (20, 120, 60, 31)) {
                    BackgroundColor = UIColor.Blue
                });
            }
        }
    }

这是LoginViewController.cs

using MonoTouch.Foundation;
using MonoTouch.UIKit;
namespace DemoHouse
{
    public partial class LoginViewController : UIViewController
    {
        LoginView loginView;
        UIScrollView scrollView;
        public override void DidReceiveMemoryWarning (){
            // Releases the view if it doesn't have a superview.
            base.DidReceiveMemoryWarning ();
            // Release any cached data, images, etc that aren't in use.
        }
        #region View lifecycle

        public override void ViewDidLoad ()
        {
            base.ViewDidLoad ();
            loginView = new LoginView("LoginView");
            View.AddSubview (loginView);
            // Perform any additional setup after loading the view, typically from a nib.
        }

如果有什么问题请告诉我。这是正确的方法吗?我不想在我的应用程序中使用storyboard和xib。

@All

TextField按钮动作不工作

可能是一个愚蠢的解决方案，但添加一个点击按钮的手势。

login_btn.UserInteractionEnabled = true;
login_btn.AddGestureRecognizer (new UITapGestureRecognizer(()=>{
//Action In HERE
}));

键盘弹出是一个本地功能，所以我很敬畏你设法打破它。也许您应该尽量不要过多地凝聚代码。它减少了代码行数，但也增加了可读性和复杂性。另外，为什么不合并两个类呢?你已经有了ViewController课程。试试这样做:

public partial class LoginViewController : UIViewController
{
    private UIScrollView scrollView;
    private UITextField txt_username, txt_password;
    private UIButton btn_login;
    public override void ViewDidLoad ()
    {
        base.ViewDidLoad ();
        /*Depending on what else is on the screen, you can hard-code the 
        x, y, width and height, but in all other cases, use this:*/
        scrollView = new UIScrollView (this.View.Bounds);
        txt_username = new UITextField (new RectangleF (5, 5, 50, 25));
        //Change other properties of the UITextfield to your liking here.
        txt_password = new UITextField (new RectangleF (5, 35, 50, 25));
        //Change other properties of the UITextfield to your liking here.
        btn_login = new UIButton (new RectangleF (5, 65, 50, 25));
        btn_login.TouchUpInside += Login;
        //Change other properties of the UIButton to your liking here.
        this.View.AddSubview (scrollView);
        scrollView.AddSubviews (new UIView[]{txt_username, txt_password, btn_login});
    }
    void Login (object sender, eventargs e)
    {
        //Do something on button click
    }
}

请记住，使用此解决方案，您实际上无法使用scrollView向下滚动，因为没有设置scrollView.ContentSize。您可以实现一个方法，其中设置所有控件的框架大小。在改变方向时调用这个方法(在ViewDidRotate方法中)。您也可以在此方法中添加scrollView.ContentSize。

我希望这些信息对你有帮助。好运！
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