c# iOS scrollView 不会滚动
c# iOS scrollView will not scroll
我有一个创建帐户视图，用户可以使用它在系统中创建帐户。我已经正确布置了视图，但无法向下滚动。我在网上到处寻找建议，最普遍的是内容小于或与 scrollView 大小相同。我添加了代码以确保不会发生这种情况，但仍然无法滚动。
我的代码：
public partial class createAccount : UIViewController
{
public User MyUser;
UIScrollView scrollView = new UIScrollView();
public DataInterfaceWeb.DataInterface myService = new DataInterfaceWeb.DataInterface();
List<string> Questions = new List<string>();
public createAccount (IntPtr handle) : base (handle)
{
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
var height = this.NavigationController.NavigationBar.Bounds.Height;
View.BackgroundColor = UIKit.UIColor.FromRGB(255, 215, 0);
nfloat bannerHeight = banner.Frame.Height;
nfloat lblTitleHeight = lblTitle.Frame.Height;
UILabel lblUsername = new UILabel();
UITextField txtUsername = new UITextField();
txtUsername.BackgroundColor = UIColor.LightGray;
lblUsername.Text = "Enter Username: ";
txtUsername.Placeholder = "Enter Username";
UILabel lblPassword = new UILabel();
lblPassword.Text = "Enter Password: ";
UITextField txtPassword = new UITextField();
txtPassword.Placeholder = "Enter Password";
txtPassword.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmPassword = new UILabel();
lblConfirmPassword.Text = "Confirm Password: ";
UITextField txtConfirmPassword = new UITextField();
txtConfirmPassword.Placeholder = "Confirm Password";
txtConfirmPassword.BackgroundColor = UIColor.LightGray;
UILabel lblEmailAddress = new UILabel();
lblEmailAddress.Text = "Enter Email Address: ";
UITextField txtEmailAddress = new UITextField();
txtEmailAddress.Placeholder = "Enter Email Address";
txtEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmEmailAddress = new UILabel();
lblConfirmEmailAddress.Text = "Confirm Email Address: ";
UITextField txtConfirmEmailAddress = new UITextField();
txtConfirmEmailAddress.Placeholder = "Confirm Email Address";
txtConfirmEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblSelectQuestion = new UILabel();
lblSelectQuestion.TextAlignment = UITextAlignment.Center;
lblSelectQuestion.Text = "Select Challenge Question";
UITextField challengeQuestion = new UITextField();
challengeQuestion.TextColor = UIKit.UIColor.Blue;
challengeQuestion.TextAlignment = UITextAlignment.Center;
challengeQuestion.Text = "Select Challenge Question";
UILabel lblAnswer = new UILabel();
lblAnswer.TextAlignment = UITextAlignment.Center;
lblAnswer.BackgroundColor = UIColor.LightGray ;
lblAnswer.Text = "Challenge Question Answer";
UITextField txtChallengeAnswer = new UITextField();
txtChallengeAnswer.Placeholder = "Enter Challenge Question Answer";
txtChallengeAnswer.TextAlignment = UITextAlignment.Center;
UILabel lblFirstName = new UILabel();
lblFirstName.Text = "First Name: ";
UITextField txtFirstName = new UITextField();
txtFirstName.Placeholder = "Enter First Name";
txtFirstName.BackgroundColor = UIColor.LightGray;
UILabel lblMI = new UILabel();
lblMI.Text = "Middle Initial: ";
UITextField txtMI = new UITextField();
txtMI.Placeholder = "MI";
txtMI.BackgroundColor = UIColor.LightGray;
UILabel lblLastName = new UILabel();
lblLastName.Text = "Last Name: ";
UITextField txtLastName = new UITextField();
txtLastName.Placeholder = "Enter Last Name";
txtLastName.BackgroundColor = UIColor.LightGray;
UILabel lblSuffix = new UILabel();
lblSuffix.Text = "Suffix: ";
UITextField txtSuffix = new UITextField();
txtSuffix.Text = "None";
txtSuffix.TextColor = UIKit.UIColor.Blue;
UILabel lblAddress = new UILabel();
lblAddress.Text = "Address: ";
UITextField txtAddress = new UITextField();
txtAddress.Placeholder = "Enter Address";
txtAddress.BackgroundColor = UIColor.LightGray;
UILabel lblCity = new UILabel();
lblCity.Text = "City: ";
UITextField txtCity = new UITextField();
txtCity.Placeholder = "Enter City";
txtCity.BackgroundColor = UIColor.LightGray;
UILabel lblState = new UILabel();
lblState.Text = "State: ";
UITextField txtState = new UITextField();
txtState.TextColor = UIKit.UIColor.Blue;
txtState.Text = "Select State";
UILabel lblZip = new UILabel();
lblZip.Text = "Zip: ";
UITextField txtZip = new UITextField();
txtZip.Placeholder = "Enter Zip";
txtZip.BackgroundColor = UIColor.LightGray;
UILabel lblPhone = new UILabel();
lblPhone.Text = "Contact Phone:";
UITextField txtPhone = new UITextField();
txtPhone.Placeholder = "Enter Phone Number";
txtPhone.BackgroundColor = UIColor.LightGray;
UILabel lblSelectPhoneType = new UILabel();
lblSelectPhoneType.Text = "Select Phone Type";
UITextField txtSelectPhoneType = new UITextField();
txtSelectPhoneType.Text = "Select Phone Type";
txtSelectPhoneType.TextColor = UIKit.UIColor.Blue;
UILabel lblMessage = new UILabel();
lblMessage.Text = "Select Company (if applicable) and department you are registering for.";
lblMessage.TextColor = UIKit.UIColor.Blue;
lblMessage.LineBreakMode = UILineBreakMode.WordWrap;
// lblMessage.NumberOfLines = 0;
UILabel lblSelectConference = new UILabel();
lblSelectConference.Text = "Select Company (if applicable)";
lblSelectConference.TextAlignment = UITextAlignment.Center;
// scrollView.ContentSize = CGSize(;
scrollView.Add(lblUsername);
scrollView.Add(txtUsername);
scrollView.Add(lblPassword);
scrollView.Add(txtPassword);
scrollView.Add(lblConfirmPassword);
scrollView.Add(txtConfirmPassword);
scrollView.Add(lblEmailAddress);
scrollView.Add(txtEmailAddress);
scrollView.Add(lblConfirmEmailAddress);
scrollView.Add(txtConfirmEmailAddress);
scrollView.Add(lblSelectQuestion);
scrollView.Add(challengeQuestion);
scrollView.Add(lblAnswer);
scrollView.Add(txtChallengeAnswer);
scrollView.Add(lblFirstName);
scrollView.Add(txtFirstName);
scrollView.Add(lblMI);
scrollView.Add(txtMI);
scrollView.Add(lblLastName);
scrollView.Add(txtLastName);
scrollView.Add(lblSuffix);
scrollView.Add(txtSuffix);
scrollView.Add(lblAddress);
scrollView.Add(txtAddress);
scrollView.Add(lblCity);
scrollView.Add(txtCity);
scrollView.Add(lblState);
scrollView.Add(txtState);
scrollView.Add(lblZip);
scrollView.Add(txtZip);
scrollView.Add(lblPhone);
scrollView.Add(txtPhone);
scrollView.Add(lblSelectPhoneType);
scrollView.Add(txtSelectPhoneType);
scrollView.Add(lblMessage);
scrollView.Add(lblSelectConference);
viewCreateAccount.Add(scrollView);
scrollView.BackgroundColor = UIKit.UIColor.White;
viewCreateAccount.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
viewCreateAccount.AddConstraints
(
banner.AtTopOf(View, height),
banner.AtRightOf(View, 0),
banner.AtLeftOf(View, 0),
lblTitle.Below(banner, 0),
lblTitle.WithSameWidth(banner),
scrollView.Below(lblTitle,0),
scrollView.AtBottomOf(View,10),
scrollView.AtLeftOf(View,10),
scrollView.AtRightOf(View,10)
);
scrollView.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
scrollView.AddConstraints(
lblUsername.AtTopOf(scrollView, 0),
lblUsername.AtLeftOf(scrollView, 0),
// txtUsername.Below(lblUsername, 0).Plus(5), // add below margin
txtUsername.ToRightOf(lblUsername, 2),
txtUsername.Width().EqualTo(250.0f),
lblPassword.Below(lblUsername, 5),
txtPassword.Below(lblUsername, 0).Plus(5), // add below margin
txtPassword.ToRightOf(lblPassword, 2),
txtPassword.Width().EqualTo(250.0f),
lblConfirmPassword.Below(lblPassword, 5),
txtConfirmPassword.Below(lblPassword, 0).Plus(5), // add below margin
txtConfirmPassword.ToRightOf(lblConfirmPassword, 2),
txtConfirmPassword.Width().EqualTo(250.0f),
lblEmailAddress.Below(lblConfirmPassword, 5),
txtEmailAddress.Below(lblConfirmPassword, 0).Plus(5), // add below margin
txtEmailAddress.ToRightOf(lblEmailAddress, 2),
txtEmailAddress.Width().EqualTo(250.0f),
lblConfirmEmailAddress.Below(lblEmailAddress, 5),
txtConfirmEmailAddress.Below(lblEmailAddress, 0).Plus(5), // add below margin
txtConfirmEmailAddress.ToRightOf(lblConfirmEmailAddress, 2),
txtConfirmEmailAddress.Width().EqualTo(250.0f),
lblSelectQuestion.Below(lblConfirmEmailAddress).Plus(10),
lblSelectQuestion.WithSameWidth(scrollView),
challengeQuestion.WithSameWidth(scrollView),
challengeQuestion.Below(lblSelectQuestion, 5).Plus(5),
lblAnswer.Below(challengeQuestion, 5).Plus(5),
lblAnswer.WithSameWidth(scrollView),
txtChallengeAnswer.Below(lblAnswer).Plus(5),
txtChallengeAnswer.WithSameWidth(scrollView),
lblFirstName.Below(txtChallengeAnswer, 5),
txtFirstName.Below(txtChallengeAnswer, 0).Plus(5), // add below margin
txtFirstName.ToRightOf(lblFirstName, 2),
txtFirstName.Width().EqualTo(250.0f),
lblMI.Below(lblFirstName, 5),
txtMI.Below(lblFirstName, 0).Plus(5), // add below margin
txtMI.ToRightOf(lblMI, 2),
txtMI.Width().EqualTo(50.0f),
lblLastName.Below(lblMI, 5),
txtLastName.Below(lblMI, 0).Plus(5), // add below margin
txtLastName.ToRightOf(lblLastName, 2),
txtLastName.Width().EqualTo(250.0f),
lblSuffix.Below(lblLastName, 5),
txtSuffix.Below(lblLastName, 0).Plus(5), // add below margin
txtSuffix.ToRightOf(lblSuffix, 2),
txtSuffix.Width().EqualTo(50.0f),
lblAddress.Below(lblSuffix, 5),
txtAddress.Below(lblSuffix, 0).Plus(5), // add below margin
txtAddress.ToRightOf(lblAddress, 2),
txtAddress.Width().EqualTo(250.0f),
lblCity.Below(lblAddress, 5),
txtCity.Below(lblAddress, 0).Plus(5), // add below margin
txtCity.ToRightOf(lblCity, 2),
txtCity.Width().EqualTo(250.0f),
lblState.Below(lblCity, 5),
txtState.Below(lblCity, 0).Plus(5), // add below margin
txtState.ToRightOf(lblState, 2),
txtState.Width().EqualTo(250.0f),
lblZip.Below(lblState, 5),
txtZip.Below(lblState, 0).Plus(5), // add below margin
txtZip.ToRightOf(lblZip, 2),
txtZip.Width().EqualTo(250.0f),
lblPhone.Below(lblZip, 5),
txtPhone.Below(lblZip, 0).Plus(5), // add below margin
txtPhone.ToRightOf(lblPhone, 2),
txtPhone.Width().EqualTo(200.0f),
lblSelectPhoneType.Below(lblPhone, 5).Plus(5),
lblSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.Below(lblSelectPhoneType, 5).Plus(5),
//lblMessage.WithSameWidth(scrollView),
lblMessage.Below(txtSelectPhoneType, 10).Plus(5),
lblMessage.Width().EqualTo(350.0f),
lblSelectConference.Below(lblMessage, 5).Plus(5),
lblSelectConference.WithSameWidth(scrollView)
);
DataSet MyQuestionsDataset = myService.GetQuestions(myusername, mypassword, "REGISTRATION", "EN");
Questions.Add("Select Challenge Question");
foreach (DataRow MyDataRow in MyQuestionsDataset.Tables[0].Rows)
{
Questions.Add(MyDataRow["QUESTION"].ToString());
};
ConfigureChallengePicker(challengeQuestion, Questions);
// Ensure content area is larger than scroll view
var frame = scrollView.Frame;
frame.Height += 250;
scrollView.ContentSize = frame.Size;
scrollView.ScrollEnabled = true;
}
void ConfigureChallengePicker(UITextField pickerTextField, List<string> theData)
{
PickerViewModel MyModel = new PickerViewModel();
MyModel._pickerSource = theData;
var picker = new UIPickerView
{
Model = MyModel,
ShowSelectionIndicator = true
};
var screenWidth = UIScreen.MainScreen.Bounds.Width;
var pickerToolBar = new UIToolbar(new RectangleF(0, 0, (float)screenWidth, 44)) { BarStyle = UIBarStyle.Default, Translucent = true };
var flexibleSpaceButton = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
var doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, (sender, e) => pickerTextField.ResignFirstResponder());
doneButton.Clicked += (object sender, EventArgs e) =>
{
pickerTextField.Text = MyModel.SelectedItem;
};
pickerToolBar.SetItems(new[] { flexibleSpaceButton, doneButton }, false);
pickerTextField.InputView = picker;
pickerTextField.InputAccessoryView = pickerToolBar;
}
}
我错过了什么？
成功了，显然我没有为滚动视图内容大小设置足够大的框架。无论如何，我将代码更改为：
public partial class createAccount : UIViewController
{
public User MyUser;
UIScrollView scrollView;
public DataInterfaceWeb.DataInterface myService = new DataInterfaceWeb.DataInterface();
List<string> Questions = new List<string>();
float h = 50.0f;
float w = 50.0f;
float padding = 10.0f;
int n = 25;
public createAccount (IntPtr handle) : base (handle)
{
}
public override void ViewDidLoad()
{
scrollView = new UIScrollView
{
Frame = new CGRect(0, 0, viewCreateAccount.Frame.Width, h + 2 * padding),
ContentSize = new SizeF((w + padding), (h + padding) * n),
BackgroundColor = UIColor.DarkGray,
AutoresizingMask = UIViewAutoresizing.FlexibleWidth
};
base.ViewDidLoad();
var height = this.NavigationController.NavigationBar.Bounds.Height;
View.BackgroundColor = UIKit.UIColor.FromRGB(255, 215, 0);
nfloat bannerHeight = banner.Frame.Height;
nfloat lblTitleHeight = lblTitle.Frame.Height;
UILabel lblUsername = new UILabel();
UITextField txtUsername = new UITextField();
txtUsername.BackgroundColor = UIColor.LightGray;
lblUsername.Text = "Enter Username: ";
txtUsername.Placeholder = "Enter Username";
UILabel lblPassword = new UILabel();
lblPassword.Text = "Enter Password: ";
UITextField txtPassword = new UITextField();
txtPassword.Placeholder = "Enter Password";
txtPassword.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmPassword = new UILabel();
lblConfirmPassword.Text = "Confirm Password: ";
UITextField txtConfirmPassword = new UITextField();
txtConfirmPassword.Placeholder = "Confirm Password";
txtConfirmPassword.BackgroundColor = UIColor.LightGray;
UILabel lblEmailAddress = new UILabel();
lblEmailAddress.Text = "Enter Email Address: ";
UITextField txtEmailAddress = new UITextField();
txtEmailAddress.Placeholder = "Enter Email Address";
txtEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmEmailAddress = new UILabel();
lblConfirmEmailAddress.Text = "Confirm Email Address: ";
UITextField txtConfirmEmailAddress = new UITextField();
txtConfirmEmailAddress.Placeholder = "Confirm Email Address";
txtConfirmEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblSelectQuestion = new UILabel();
lblSelectQuestion.TextAlignment = UITextAlignment.Center;
lblSelectQuestion.Text = "Select Challenge Question";
UITextField challengeQuestion = new UITextField();
challengeQuestion.TextColor = UIKit.UIColor.Blue;
challengeQuestion.TextAlignment = UITextAlignment.Center;
challengeQuestion.Text = "Select Challenge Question";
UILabel lblAnswer = new UILabel();
lblAnswer.TextAlignment = UITextAlignment.Center;
lblAnswer.BackgroundColor = UIColor.LightGray ;
lblAnswer.Text = "Challenge Question Answer";
UITextField txtChallengeAnswer = new UITextField();
txtChallengeAnswer.Placeholder = "Enter Challenge Question Answer";
txtChallengeAnswer.TextAlignment = UITextAlignment.Center;
UILabel lblFirstName = new UILabel();
lblFirstName.Text = "First Name: ";
UITextField txtFirstName = new UITextField();
txtFirstName.Placeholder = "Enter First Name";
txtFirstName.BackgroundColor = UIColor.LightGray;
UILabel lblMI = new UILabel();
lblMI.Text = "Middle Initial: ";
UITextField txtMI = new UITextField();
txtMI.Placeholder = "MI";
txtMI.BackgroundColor = UIColor.LightGray;
UILabel lblLastName = new UILabel();
lblLastName.Text = "Last Name: ";
UITextField txtLastName = new UITextField();
txtLastName.Placeholder = "Enter Last Name";
txtLastName.BackgroundColor = UIColor.LightGray;
UILabel lblSuffix = new UILabel();
lblSuffix.Text = "Suffix: ";
UITextField txtSuffix = new UITextField();
txtSuffix.Text = "None";
txtSuffix.TextColor = UIKit.UIColor.Blue;
UILabel lblAddress = new UILabel();
lblAddress.Text = "Address: ";
UITextField txtAddress = new UITextField();
txtAddress.Placeholder = "Enter Address";
txtAddress.BackgroundColor = UIColor.LightGray;
UILabel lblCity = new UILabel();
lblCity.Text = "City: ";
UITextField txtCity = new UITextField();
txtCity.Placeholder = "Enter City";
txtCity.BackgroundColor = UIColor.LightGray;
UILabel lblState = new UILabel();
lblState.Text = "State: ";
UITextField txtState = new UITextField();
txtState.TextColor = UIKit.UIColor.Blue;
txtState.Text = "Select State";
UILabel lblZip = new UILabel();
lblZip.Text = "Zip: ";
UITextField txtZip = new UITextField();
txtZip.Placeholder = "Enter Zip";
txtZip.BackgroundColor = UIColor.LightGray;
UILabel lblPhone = new UILabel();
lblPhone.Text = "Contact Phone:";
UITextField txtPhone = new UITextField();
txtPhone.Placeholder = "Enter Phone Number";
txtPhone.BackgroundColor = UIColor.LightGray;
UILabel lblSelectPhoneType = new UILabel();
lblSelectPhoneType.Text = "Select Phone Type";
UITextField txtSelectPhoneType = new UITextField();
txtSelectPhoneType.Text = "Select Phone Type";
txtSelectPhoneType.TextColor = UIKit.UIColor.Blue;
UILabel lblMessage = new UILabel();
lblMessage.Text = "Select Company (if applicable) and Department you are registering for.";
lblMessage.TextColor = UIKit.UIColor.Blue;
lblMessage.LineBreakMode = UILineBreakMode.WordWrap;
UILabel lblSelectCompany = new UILabel();
lblSelectCompany .Text = "Select Company (if applicable)";
lblSelectCompany .TextAlignment = UITextAlignment.Center;
// scrollView.ContentSize = CGSize(;
scrollView.Add(lblUsername);
scrollView.Add(txtUsername);
scrollView.Add(lblPassword);
scrollView.Add(txtPassword);
scrollView.Add(lblConfirmPassword);
scrollView.Add(txtConfirmPassword);
scrollView.Add(lblEmailAddress);
scrollView.Add(txtEmailAddress);
scrollView.Add(lblConfirmEmailAddress);
scrollView.Add(txtConfirmEmailAddress);
scrollView.Add(lblSelectQuestion);
scrollView.Add(challengeQuestion);
scrollView.Add(lblAnswer);
scrollView.Add(txtChallengeAnswer);
scrollView.Add(lblFirstName);
scrollView.Add(txtFirstName);
scrollView.Add(lblMI);
scrollView.Add(txtMI);
scrollView.Add(lblLastName);
scrollView.Add(txtLastName);
scrollView.Add(lblSuffix);
scrollView.Add(txtSuffix);
scrollView.Add(lblAddress);
scrollView.Add(txtAddress);
scrollView.Add(lblCity);
scrollView.Add(txtCity);
scrollView.Add(lblState);
scrollView.Add(txtState);
scrollView.Add(lblZip);
scrollView.Add(txtZip);
scrollView.Add(lblPhone);
scrollView.Add(txtPhone);
scrollView.Add(lblSelectPhoneType);
scrollView.Add(txtSelectPhoneType);
scrollView.Add(lblMessage);
scrollView.Add(lblSelectCompany);
viewCreateAccount.Add(scrollView);
scrollView.BackgroundColor = UIKit.UIColor.White;
viewCreateAccount.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
viewCreateAccount.AddConstraints
(
banner.AtTopOf(View, height),
banner.AtRightOf(View, 0),
banner.AtLeftOf(View, 0),
lblTitle.Below(banner, 0),
lblTitle.WithSameWidth(banner),
scrollView.Below(lblTitle,0),
scrollView.AtBottomOf(View,10),
scrollView.AtLeftOf(View,10),
scrollView.AtRightOf(View,10)
);
scrollView.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
scrollView.AddConstraints(
lblUsername.AtTopOf(scrollView, 0),
lblUsername.AtLeftOf(scrollView, 0),
// txtUsername.Below(lblUsername, 0).Plus(5), // add below margin
txtUsername.ToRightOf(lblUsername, 2),
txtUsername.Width().EqualTo(250.0f),
lblPassword.Below(lblUsername, 5),
txtPassword.Below(lblUsername, 0).Plus(5), // add below margin
txtPassword.ToRightOf(lblPassword, 2),
txtPassword.Width().EqualTo(250.0f),
lblConfirmPassword.Below(lblPassword, 5),
txtConfirmPassword.Below(lblPassword, 0).Plus(5), // add below margin
txtConfirmPassword.ToRightOf(lblConfirmPassword, 2),
txtConfirmPassword.Width().EqualTo(250.0f),
lblEmailAddress.Below(lblConfirmPassword, 5),
txtEmailAddress.Below(lblConfirmPassword, 0).Plus(5), // add below margin
txtEmailAddress.ToRightOf(lblEmailAddress, 2),
txtEmailAddress.Width().EqualTo(250.0f),
lblConfirmEmailAddress.Below(lblEmailAddress, 5),
txtConfirmEmailAddress.Below(lblEmailAddress, 0).Plus(5), // add below margin
txtConfirmEmailAddress.ToRightOf(lblConfirmEmailAddress, 2),
txtConfirmEmailAddress.Width().EqualTo(250.0f),
lblSelectQuestion.Below(lblConfirmEmailAddress).Plus(10),
lblSelectQuestion.WithSameWidth(scrollView),
challengeQuestion.WithSameWidth(scrollView),
challengeQuestion.Below(lblSelectQuestion, 5).Plus(5),
lblAnswer.Below(challengeQuestion, 5).Plus(5),
lblAnswer.WithSameWidth(scrollView),
txtChallengeAnswer.Below(lblAnswer).Plus(5),
txtChallengeAnswer.WithSameWidth(scrollView),
lblFirstName.Below(txtChallengeAnswer, 5),
txtFirstName.Below(txtChallengeAnswer, 0).Plus(5), // add below margin
txtFirstName.ToRightOf(lblFirstName, 2),
txtFirstName.Width().EqualTo(250.0f),
lblMI.Below(lblFirstName, 5),
txtMI.Below(lblFirstName, 0).Plus(5), // add below margin
txtMI.ToRightOf(lblMI, 2),
txtMI.Width().EqualTo(50.0f),
lblLastName.Below(lblMI, 5),
txtLastName.Below(lblMI, 0).Plus(5), // add below margin
txtLastName.ToRightOf(lblLastName, 2),
txtLastName.Width().EqualTo(250.0f),
lblSuffix.Below(lblLastName, 5),
txtSuffix.Below(lblLastName, 0).Plus(5), // add below margin
txtSuffix.ToRightOf(lblSuffix, 2),
txtSuffix.Width().EqualTo(50.0f),
lblAddress.Below(lblSuffix, 5),
txtAddress.Below(lblSuffix, 0).Plus(5), // add below margin
txtAddress.ToRightOf(lblAddress, 2),
txtAddress.Width().EqualTo(250.0f),
lblCity.Below(lblAddress, 5),
txtCity.Below(lblAddress, 0).Plus(5), // add below margin
txtCity.ToRightOf(lblCity, 2),
txtCity.Width().EqualTo(250.0f),
lblState.Below(lblCity, 5),
txtState.Below(lblCity, 0).Plus(5), // add below margin
txtState.ToRightOf(lblState, 2),
txtState.Width().EqualTo(250.0f),
lblZip.Below(lblState, 5),
txtZip.Below(lblState, 0).Plus(5), // add below margin
txtZip.ToRightOf(lblZip, 2),
txtZip.Width().EqualTo(250.0f),
lblPhone.Below(lblZip, 5),
txtPhone.Below(lblZip, 0).Plus(5), // add below margin
txtPhone.ToRightOf(lblPhone, 2),
txtPhone.Width().EqualTo(200.0f),
lblSelectPhoneType.Below(lblPhone, 5).Plus(5),
lblSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.Below(lblSelectPhoneType, 5).Plus(5),
//lblMessage.WithSameWidth(scrollView),
lblMessage.Below(txtSelectPhoneType, 10).Plus(5),
lblMessage.Width().EqualTo(350.0f),
lblSelectCompany.Below(lblMessage, 5).Plus(5),
lblSelectCompany.WithSameWidth(scrollView)
);
DataSet MyQuestionsDataset = myOMLService.GetQuestions(myusername, mypassword, "REGISTRATION", "EN");
Questions.Add("Select Challenge Question");
foreach (DataRow MyDataRow in MyQuestionsDataset.Tables[0].Rows)
{
Questions.Add(MyDataRow["QUESTION"].ToString());
};
ConfigureChallengePicker(challengeQuestion, Questions);
}
void ConfigureChallengePicker(UITextField pickerTextField, List<string> theData)
{
PickerViewModel MyModel = new PickerViewModel();
MyModel._pickerSource = theData;
var picker = new UIPickerView
{
Model = MyModel,
ShowSelectionIndicator = true
};
var screenWidth = UIScreen.MainScreen.Bounds.Width;
var pickerToolBar = new UIToolbar(new RectangleF(0, 0, (float)screenWidth, 44)) { BarStyle = UIBarStyle.Default, Translucent = true };
var flexibleSpaceButton = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
var doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, (sender, e) => pickerTextField.ResignFirstResponder());
doneButton.Clicked += (object sender, EventArgs e) =>
{
pickerTextField.Text = MyModel.SelectedItem;
};
pickerToolBar.SetItems(new[] { flexibleSpaceButton, doneButton }, false);
pickerTextField.InputView = picker;
pickerTextField.InputAccessoryView = pickerToolBar;
}
}
现在可以很好地滚动了，虽然帧尺寸有点大，但我必须想出一种方法来根据内容量来计算它，你会认为它是内置的，但不是。
我有一个创建帐户视图，用户可以使用它在系统中创建帐户。我已经正确布置了视图，但无法向下滚动。我在网上到处寻找建议，最普遍的是内容小于或与 scrollView 大小相同。我添加了代码以确保不会发生这种情况，但仍然无法滚动。
我的代码：
public partial class createAccount : UIViewController
{
public User MyUser;
UIScrollView scrollView = new UIScrollView();
public DataInterfaceWeb.DataInterface myService = new DataInterfaceWeb.DataInterface();
List<string> Questions = new List<string>();
public createAccount (IntPtr handle) : base (handle)
{
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
var height = this.NavigationController.NavigationBar.Bounds.Height;
View.BackgroundColor = UIKit.UIColor.FromRGB(255, 215, 0);
nfloat bannerHeight = banner.Frame.Height;
nfloat lblTitleHeight = lblTitle.Frame.Height;
UILabel lblUsername = new UILabel();
UITextField txtUsername = new UITextField();
txtUsername.BackgroundColor = UIColor.LightGray;
lblUsername.Text = "Enter Username: ";
txtUsername.Placeholder = "Enter Username";
UILabel lblPassword = new UILabel();
lblPassword.Text = "Enter Password: ";
UITextField txtPassword = new UITextField();
txtPassword.Placeholder = "Enter Password";
txtPassword.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmPassword = new UILabel();
lblConfirmPassword.Text = "Confirm Password: ";
UITextField txtConfirmPassword = new UITextField();
txtConfirmPassword.Placeholder = "Confirm Password";
txtConfirmPassword.BackgroundColor = UIColor.LightGray;
UILabel lblEmailAddress = new UILabel();
lblEmailAddress.Text = "Enter Email Address: ";
UITextField txtEmailAddress = new UITextField();
txtEmailAddress.Placeholder = "Enter Email Address";
txtEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmEmailAddress = new UILabel();
lblConfirmEmailAddress.Text = "Confirm Email Address: ";
UITextField txtConfirmEmailAddress = new UITextField();
txtConfirmEmailAddress.Placeholder = "Confirm Email Address";
txtConfirmEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblSelectQuestion = new UILabel();
lblSelectQuestion.TextAlignment = UITextAlignment.Center;
lblSelectQuestion.Text = "Select Challenge Question";
UITextField challengeQuestion = new UITextField();
challengeQuestion.TextColor = UIKit.UIColor.Blue;
challengeQuestion.TextAlignment = UITextAlignment.Center;
challengeQuestion.Text = "Select Challenge Question";
UILabel lblAnswer = new UILabel();
lblAnswer.TextAlignment = UITextAlignment.Center;
lblAnswer.BackgroundColor = UIColor.LightGray ;
lblAnswer.Text = "Challenge Question Answer";
UITextField txtChallengeAnswer = new UITextField();
txtChallengeAnswer.Placeholder = "Enter Challenge Question Answer";
txtChallengeAnswer.TextAlignment = UITextAlignment.Center;
UILabel lblFirstName = new UILabel();
lblFirstName.Text = "First Name: ";
UITextField txtFirstName = new UITextField();
txtFirstName.Placeholder = "Enter First Name";
txtFirstName.BackgroundColor = UIColor.LightGray;
UILabel lblMI = new UILabel();
lblMI.Text = "Middle Initial: ";
UITextField txtMI = new UITextField();
txtMI.Placeholder = "MI";
txtMI.BackgroundColor = UIColor.LightGray;
UILabel lblLastName = new UILabel();
lblLastName.Text = "Last Name: ";
UITextField txtLastName = new UITextField();
txtLastName.Placeholder = "Enter Last Name";
txtLastName.BackgroundColor = UIColor.LightGray;
UILabel lblSuffix = new UILabel();
lblSuffix.Text = "Suffix: ";
UITextField txtSuffix = new UITextField();
txtSuffix.Text = "None";
txtSuffix.TextColor = UIKit.UIColor.Blue;
UILabel lblAddress = new UILabel();
lblAddress.Text = "Address: ";
UITextField txtAddress = new UITextField();
txtAddress.Placeholder = "Enter Address";
txtAddress.BackgroundColor = UIColor.LightGray;
UILabel lblCity = new UILabel();
lblCity.Text = "City: ";
UITextField txtCity = new UITextField();
txtCity.Placeholder = "Enter City";
txtCity.BackgroundColor = UIColor.LightGray;
UILabel lblState = new UILabel();
lblState.Text = "State: ";
UITextField txtState = new UITextField();
txtState.TextColor = UIKit.UIColor.Blue;
txtState.Text = "Select State";
UILabel lblZip = new UILabel();
lblZip.Text = "Zip: ";
UITextField txtZip = new UITextField();
txtZip.Placeholder = "Enter Zip";
txtZip.BackgroundColor = UIColor.LightGray;
UILabel lblPhone = new UILabel();
lblPhone.Text = "Contact Phone:";
UITextField txtPhone = new UITextField();
txtPhone.Placeholder = "Enter Phone Number";
txtPhone.BackgroundColor = UIColor.LightGray;
UILabel lblSelectPhoneType = new UILabel();
lblSelectPhoneType.Text = "Select Phone Type";
UITextField txtSelectPhoneType = new UITextField();
txtSelectPhoneType.Text = "Select Phone Type";
txtSelectPhoneType.TextColor = UIKit.UIColor.Blue;
UILabel lblMessage = new UILabel();
lblMessage.Text = "Select Company (if applicable) and department you are registering for.";
lblMessage.TextColor = UIKit.UIColor.Blue;
lblMessage.LineBreakMode = UILineBreakMode.WordWrap;
// lblMessage.NumberOfLines = 0;
UILabel lblSelectConference = new UILabel();
lblSelectConference.Text = "Select Company (if applicable)";
lblSelectConference.TextAlignment = UITextAlignment.Center;
// scrollView.ContentSize = CGSize(;
scrollView.Add(lblUsername);
scrollView.Add(txtUsername);
scrollView.Add(lblPassword);
scrollView.Add(txtPassword);
scrollView.Add(lblConfirmPassword);
scrollView.Add(txtConfirmPassword);
scrollView.Add(lblEmailAddress);
scrollView.Add(txtEmailAddress);
scrollView.Add(lblConfirmEmailAddress);
scrollView.Add(txtConfirmEmailAddress);
scrollView.Add(lblSelectQuestion);
scrollView.Add(challengeQuestion);
scrollView.Add(lblAnswer);
scrollView.Add(txtChallengeAnswer);
scrollView.Add(lblFirstName);
scrollView.Add(txtFirstName);
scrollView.Add(lblMI);
scrollView.Add(txtMI);
scrollView.Add(lblLastName);
scrollView.Add(txtLastName);
scrollView.Add(lblSuffix);
scrollView.Add(txtSuffix);
scrollView.Add(lblAddress);
scrollView.Add(txtAddress);
scrollView.Add(lblCity);
scrollView.Add(txtCity);
scrollView.Add(lblState);
scrollView.Add(txtState);
scrollView.Add(lblZip);
scrollView.Add(txtZip);
scrollView.Add(lblPhone);
scrollView.Add(txtPhone);
scrollView.Add(lblSelectPhoneType);
scrollView.Add(txtSelectPhoneType);
scrollView.Add(lblMessage);
scrollView.Add(lblSelectConference);
viewCreateAccount.Add(scrollView);
scrollView.BackgroundColor = UIKit.UIColor.White;
viewCreateAccount.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
viewCreateAccount.AddConstraints
(
banner.AtTopOf(View, height),
banner.AtRightOf(View, 0),
banner.AtLeftOf(View, 0),
lblTitle.Below(banner, 0),
lblTitle.WithSameWidth(banner),
scrollView.Below(lblTitle,0),
scrollView.AtBottomOf(View,10),
scrollView.AtLeftOf(View,10),
scrollView.AtRightOf(View,10)
);
scrollView.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
scrollView.AddConstraints(
lblUsername.AtTopOf(scrollView, 0),
lblUsername.AtLeftOf(scrollView, 0),
// txtUsername.Below(lblUsername, 0).Plus(5), // add below margin
txtUsername.ToRightOf(lblUsername, 2),
txtUsername.Width().EqualTo(250.0f),
lblPassword.Below(lblUsername, 5),
txtPassword.Below(lblUsername, 0).Plus(5), // add below margin
txtPassword.ToRightOf(lblPassword, 2),
txtPassword.Width().EqualTo(250.0f),
lblConfirmPassword.Below(lblPassword, 5),
txtConfirmPassword.Below(lblPassword, 0).Plus(5), // add below margin
txtConfirmPassword.ToRightOf(lblConfirmPassword, 2),
txtConfirmPassword.Width().EqualTo(250.0f),
lblEmailAddress.Below(lblConfirmPassword, 5),
txtEmailAddress.Below(lblConfirmPassword, 0).Plus(5), // add below margin
txtEmailAddress.ToRightOf(lblEmailAddress, 2),
txtEmailAddress.Width().EqualTo(250.0f),
lblConfirmEmailAddress.Below(lblEmailAddress, 5),
txtConfirmEmailAddress.Below(lblEmailAddress, 0).Plus(5), // add below margin
txtConfirmEmailAddress.ToRightOf(lblConfirmEmailAddress, 2),
txtConfirmEmailAddress.Width().EqualTo(250.0f),
lblSelectQuestion.Below(lblConfirmEmailAddress).Plus(10),
lblSelectQuestion.WithSameWidth(scrollView),
challengeQuestion.WithSameWidth(scrollView),
challengeQuestion.Below(lblSelectQuestion, 5).Plus(5),
lblAnswer.Below(challengeQuestion, 5).Plus(5),
lblAnswer.WithSameWidth(scrollView),
txtChallengeAnswer.Below(lblAnswer).Plus(5),
txtChallengeAnswer.WithSameWidth(scrollView),
lblFirstName.Below(txtChallengeAnswer, 5),
txtFirstName.Below(txtChallengeAnswer, 0).Plus(5), // add below margin
txtFirstName.ToRightOf(lblFirstName, 2),
txtFirstName.Width().EqualTo(250.0f),
lblMI.Below(lblFirstName, 5),
txtMI.Below(lblFirstName, 0).Plus(5), // add below margin
txtMI.ToRightOf(lblMI, 2),
txtMI.Width().EqualTo(50.0f),
lblLastName.Below(lblMI, 5),
txtLastName.Below(lblMI, 0).Plus(5), // add below margin
txtLastName.ToRightOf(lblLastName, 2),
txtLastName.Width().EqualTo(250.0f),
lblSuffix.Below(lblLastName, 5),
txtSuffix.Below(lblLastName, 0).Plus(5), // add below margin
txtSuffix.ToRightOf(lblSuffix, 2),
txtSuffix.Width().EqualTo(50.0f),
lblAddress.Below(lblSuffix, 5),
txtAddress.Below(lblSuffix, 0).Plus(5), // add below margin
txtAddress.ToRightOf(lblAddress, 2),
txtAddress.Width().EqualTo(250.0f),
lblCity.Below(lblAddress, 5),
txtCity.Below(lblAddress, 0).Plus(5), // add below margin
txtCity.ToRightOf(lblCity, 2),
txtCity.Width().EqualTo(250.0f),
lblState.Below(lblCity, 5),
txtState.Below(lblCity, 0).Plus(5), // add below margin
txtState.ToRightOf(lblState, 2),
txtState.Width().EqualTo(250.0f),
lblZip.Below(lblState, 5),
txtZip.Below(lblState, 0).Plus(5), // add below margin
txtZip.ToRightOf(lblZip, 2),
txtZip.Width().EqualTo(250.0f),
lblPhone.Below(lblZip, 5),
txtPhone.Below(lblZip, 0).Plus(5), // add below margin
txtPhone.ToRightOf(lblPhone, 2),
txtPhone.Width().EqualTo(200.0f),
lblSelectPhoneType.Below(lblPhone, 5).Plus(5),
lblSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.Below(lblSelectPhoneType, 5).Plus(5),
//lblMessage.WithSameWidth(scrollView),
lblMessage.Below(txtSelectPhoneType, 10).Plus(5),
lblMessage.Width().EqualTo(350.0f),
lblSelectConference.Below(lblMessage, 5).Plus(5),
lblSelectConference.WithSameWidth(scrollView)
);
DataSet MyQuestionsDataset = myService.GetQuestions(myusername, mypassword, "REGISTRATION", "EN");
Questions.Add("Select Challenge Question");
foreach (DataRow MyDataRow in MyQuestionsDataset.Tables[0].Rows)
{
Questions.Add(MyDataRow["QUESTION"].ToString());
};
ConfigureChallengePicker(challengeQuestion, Questions);
// Ensure content area is larger than scroll view
var frame = scrollView.Frame;
frame.Height += 250;
scrollView.ContentSize = frame.Size;
scrollView.ScrollEnabled = true;
}
void ConfigureChallengePicker(UITextField pickerTextField, List<string> theData)
{
PickerViewModel MyModel = new PickerViewModel();
MyModel._pickerSource = theData;
var picker = new UIPickerView
{
Model = MyModel,
ShowSelectionIndicator = true
};
var screenWidth = UIScreen.MainScreen.Bounds.Width;
var pickerToolBar = new UIToolbar(new RectangleF(0, 0, (float)screenWidth, 44)) { BarStyle = UIBarStyle.Default, Translucent = true };
var flexibleSpaceButton = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
var doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, (sender, e) => pickerTextField.ResignFirstResponder());
doneButton.Clicked += (object sender, EventArgs e) =>
{
pickerTextField.Text = MyModel.SelectedItem;
};
pickerToolBar.SetItems(new[] { flexibleSpaceButton, doneButton }, false);
pickerTextField.InputView = picker;
pickerTextField.InputAccessoryView = pickerToolBar;
}
}
我错过了什么？
成功了，显然我没有为滚动视图内容大小设置足够大的框架。无论如何，我将代码更改为：
public partial class createAccount : UIViewController
{
public User MyUser;
UIScrollView scrollView;
public DataInterfaceWeb.DataInterface myService = new DataInterfaceWeb.DataInterface();
List<string> Questions = new List<string>();
float h = 50.0f;
float w = 50.0f;
float padding = 10.0f;
int n = 25;
public createAccount (IntPtr handle) : base (handle)
{
}
public override void ViewDidLoad()
{
scrollView = new UIScrollView
{
Frame = new CGRect(0, 0, viewCreateAccount.Frame.Width, h + 2 * padding),
ContentSize = new SizeF((w + padding), (h + padding) * n),
BackgroundColor = UIColor.DarkGray,
AutoresizingMask = UIViewAutoresizing.FlexibleWidth
};
base.ViewDidLoad();
var height = this.NavigationController.NavigationBar.Bounds.Height;
View.BackgroundColor = UIKit.UIColor.FromRGB(255, 215, 0);
nfloat bannerHeight = banner.Frame.Height;
nfloat lblTitleHeight = lblTitle.Frame.Height;
UILabel lblUsername = new UILabel();
UITextField txtUsername = new UITextField();
txtUsername.BackgroundColor = UIColor.LightGray;
lblUsername.Text = "Enter Username: ";
txtUsername.Placeholder = "Enter Username";
UILabel lblPassword = new UILabel();
lblPassword.Text = "Enter Password: ";
UITextField txtPassword = new UITextField();
txtPassword.Placeholder = "Enter Password";
txtPassword.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmPassword = new UILabel();
lblConfirmPassword.Text = "Confirm Password: ";
UITextField txtConfirmPassword = new UITextField();
txtConfirmPassword.Placeholder = "Confirm Password";
txtConfirmPassword.BackgroundColor = UIColor.LightGray;
UILabel lblEmailAddress = new UILabel();
lblEmailAddress.Text = "Enter Email Address: ";
UITextField txtEmailAddress = new UITextField();
txtEmailAddress.Placeholder = "Enter Email Address";
txtEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblConfirmEmailAddress = new UILabel();
lblConfirmEmailAddress.Text = "Confirm Email Address: ";
UITextField txtConfirmEmailAddress = new UITextField();
txtConfirmEmailAddress.Placeholder = "Confirm Email Address";
txtConfirmEmailAddress.BackgroundColor = UIColor.LightGray;
UILabel lblSelectQuestion = new UILabel();
lblSelectQuestion.TextAlignment = UITextAlignment.Center;
lblSelectQuestion.Text = "Select Challenge Question";
UITextField challengeQuestion = new UITextField();
challengeQuestion.TextColor = UIKit.UIColor.Blue;
challengeQuestion.TextAlignment = UITextAlignment.Center;
challengeQuestion.Text = "Select Challenge Question";
UILabel lblAnswer = new UILabel();
lblAnswer.TextAlignment = UITextAlignment.Center;
lblAnswer.BackgroundColor = UIColor.LightGray ;
lblAnswer.Text = "Challenge Question Answer";
UITextField txtChallengeAnswer = new UITextField();
txtChallengeAnswer.Placeholder = "Enter Challenge Question Answer";
txtChallengeAnswer.TextAlignment = UITextAlignment.Center;
UILabel lblFirstName = new UILabel();
lblFirstName.Text = "First Name: ";
UITextField txtFirstName = new UITextField();
txtFirstName.Placeholder = "Enter First Name";
txtFirstName.BackgroundColor = UIColor.LightGray;
UILabel lblMI = new UILabel();
lblMI.Text = "Middle Initial: ";
UITextField txtMI = new UITextField();
txtMI.Placeholder = "MI";
txtMI.BackgroundColor = UIColor.LightGray;
UILabel lblLastName = new UILabel();
lblLastName.Text = "Last Name: ";
UITextField txtLastName = new UITextField();
txtLastName.Placeholder = "Enter Last Name";
txtLastName.BackgroundColor = UIColor.LightGray;
UILabel lblSuffix = new UILabel();
lblSuffix.Text = "Suffix: ";
UITextField txtSuffix = new UITextField();
txtSuffix.Text = "None";
txtSuffix.TextColor = UIKit.UIColor.Blue;
UILabel lblAddress = new UILabel();
lblAddress.Text = "Address: ";
UITextField txtAddress = new UITextField();
txtAddress.Placeholder = "Enter Address";
txtAddress.BackgroundColor = UIColor.LightGray;
UILabel lblCity = new UILabel();
lblCity.Text = "City: ";
UITextField txtCity = new UITextField();
txtCity.Placeholder = "Enter City";
txtCity.BackgroundColor = UIColor.LightGray;
UILabel lblState = new UILabel();
lblState.Text = "State: ";
UITextField txtState = new UITextField();
txtState.TextColor = UIKit.UIColor.Blue;
txtState.Text = "Select State";
UILabel lblZip = new UILabel();
lblZip.Text = "Zip: ";
UITextField txtZip = new UITextField();
txtZip.Placeholder = "Enter Zip";
txtZip.BackgroundColor = UIColor.LightGray;
UILabel lblPhone = new UILabel();
lblPhone.Text = "Contact Phone:";
UITextField txtPhone = new UITextField();
txtPhone.Placeholder = "Enter Phone Number";
txtPhone.BackgroundColor = UIColor.LightGray;
UILabel lblSelectPhoneType = new UILabel();
lblSelectPhoneType.Text = "Select Phone Type";
UITextField txtSelectPhoneType = new UITextField();
txtSelectPhoneType.Text = "Select Phone Type";
txtSelectPhoneType.TextColor = UIKit.UIColor.Blue;
UILabel lblMessage = new UILabel();
lblMessage.Text = "Select Company (if applicable) and Department you are registering for.";
lblMessage.TextColor = UIKit.UIColor.Blue;
lblMessage.LineBreakMode = UILineBreakMode.WordWrap;
UILabel lblSelectCompany = new UILabel();
lblSelectCompany .Text = "Select Company (if applicable)";
lblSelectCompany .TextAlignment = UITextAlignment.Center;
// scrollView.ContentSize = CGSize(;
scrollView.Add(lblUsername);
scrollView.Add(txtUsername);
scrollView.Add(lblPassword);
scrollView.Add(txtPassword);
scrollView.Add(lblConfirmPassword);
scrollView.Add(txtConfirmPassword);
scrollView.Add(lblEmailAddress);
scrollView.Add(txtEmailAddress);
scrollView.Add(lblConfirmEmailAddress);
scrollView.Add(txtConfirmEmailAddress);
scrollView.Add(lblSelectQuestion);
scrollView.Add(challengeQuestion);
scrollView.Add(lblAnswer);
scrollView.Add(txtChallengeAnswer);
scrollView.Add(lblFirstName);
scrollView.Add(txtFirstName);
scrollView.Add(lblMI);
scrollView.Add(txtMI);
scrollView.Add(lblLastName);
scrollView.Add(txtLastName);
scrollView.Add(lblSuffix);
scrollView.Add(txtSuffix);
scrollView.Add(lblAddress);
scrollView.Add(txtAddress);
scrollView.Add(lblCity);
scrollView.Add(txtCity);
scrollView.Add(lblState);
scrollView.Add(txtState);
scrollView.Add(lblZip);
scrollView.Add(txtZip);
scrollView.Add(lblPhone);
scrollView.Add(txtPhone);
scrollView.Add(lblSelectPhoneType);
scrollView.Add(txtSelectPhoneType);
scrollView.Add(lblMessage);
scrollView.Add(lblSelectCompany);
viewCreateAccount.Add(scrollView);
scrollView.BackgroundColor = UIKit.UIColor.White;
viewCreateAccount.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
viewCreateAccount.AddConstraints
(
banner.AtTopOf(View, height),
banner.AtRightOf(View, 0),
banner.AtLeftOf(View, 0),
lblTitle.Below(banner, 0),
lblTitle.WithSameWidth(banner),
scrollView.Below(lblTitle,0),
scrollView.AtBottomOf(View,10),
scrollView.AtLeftOf(View,10),
scrollView.AtRightOf(View,10)
);
scrollView.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
scrollView.AddConstraints(
lblUsername.AtTopOf(scrollView, 0),
lblUsername.AtLeftOf(scrollView, 0),
// txtUsername.Below(lblUsername, 0).Plus(5), // add below margin
txtUsername.ToRightOf(lblUsername, 2),
txtUsername.Width().EqualTo(250.0f),
lblPassword.Below(lblUsername, 5),
txtPassword.Below(lblUsername, 0).Plus(5), // add below margin
txtPassword.ToRightOf(lblPassword, 2),
txtPassword.Width().EqualTo(250.0f),
lblConfirmPassword.Below(lblPassword, 5),
txtConfirmPassword.Below(lblPassword, 0).Plus(5), // add below margin
txtConfirmPassword.ToRightOf(lblConfirmPassword, 2),
txtConfirmPassword.Width().EqualTo(250.0f),
lblEmailAddress.Below(lblConfirmPassword, 5),
txtEmailAddress.Below(lblConfirmPassword, 0).Plus(5), // add below margin
txtEmailAddress.ToRightOf(lblEmailAddress, 2),
txtEmailAddress.Width().EqualTo(250.0f),
lblConfirmEmailAddress.Below(lblEmailAddress, 5),
txtConfirmEmailAddress.Below(lblEmailAddress, 0).Plus(5), // add below margin
txtConfirmEmailAddress.ToRightOf(lblConfirmEmailAddress, 2),
txtConfirmEmailAddress.Width().EqualTo(250.0f),
lblSelectQuestion.Below(lblConfirmEmailAddress).Plus(10),
lblSelectQuestion.WithSameWidth(scrollView),
challengeQuestion.WithSameWidth(scrollView),
challengeQuestion.Below(lblSelectQuestion, 5).Plus(5),
lblAnswer.Below(challengeQuestion, 5).Plus(5),
lblAnswer.WithSameWidth(scrollView),
txtChallengeAnswer.Below(lblAnswer).Plus(5),
txtChallengeAnswer.WithSameWidth(scrollView),
lblFirstName.Below(txtChallengeAnswer, 5),
txtFirstName.Below(txtChallengeAnswer, 0).Plus(5), // add below margin
txtFirstName.ToRightOf(lblFirstName, 2),
txtFirstName.Width().EqualTo(250.0f),
lblMI.Below(lblFirstName, 5),
txtMI.Below(lblFirstName, 0).Plus(5), // add below margin
txtMI.ToRightOf(lblMI, 2),
txtMI.Width().EqualTo(50.0f),
lblLastName.Below(lblMI, 5),
txtLastName.Below(lblMI, 0).Plus(5), // add below margin
txtLastName.ToRightOf(lblLastName, 2),
txtLastName.Width().EqualTo(250.0f),
lblSuffix.Below(lblLastName, 5),
txtSuffix.Below(lblLastName, 0).Plus(5), // add below margin
txtSuffix.ToRightOf(lblSuffix, 2),
txtSuffix.Width().EqualTo(50.0f),
lblAddress.Below(lblSuffix, 5),
txtAddress.Below(lblSuffix, 0).Plus(5), // add below margin
txtAddress.ToRightOf(lblAddress, 2),
txtAddress.Width().EqualTo(250.0f),
lblCity.Below(lblAddress, 5),
txtCity.Below(lblAddress, 0).Plus(5), // add below margin
txtCity.ToRightOf(lblCity, 2),
txtCity.Width().EqualTo(250.0f),
lblState.Below(lblCity, 5),
txtState.Below(lblCity, 0).Plus(5), // add below margin
txtState.ToRightOf(lblState, 2),
txtState.Width().EqualTo(250.0f),
lblZip.Below(lblState, 5),
txtZip.Below(lblState, 0).Plus(5), // add below margin
txtZip.ToRightOf(lblZip, 2),
txtZip.Width().EqualTo(250.0f),
lblPhone.Below(lblZip, 5),
txtPhone.Below(lblZip, 0).Plus(5), // add below margin
txtPhone.ToRightOf(lblPhone, 2),
txtPhone.Width().EqualTo(200.0f),
lblSelectPhoneType.Below(lblPhone, 5).Plus(5),
lblSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.WithSameWidth(scrollView),
txtSelectPhoneType.Below(lblSelectPhoneType, 5).Plus(5),
//lblMessage.WithSameWidth(scrollView),
lblMessage.Below(txtSelectPhoneType, 10).Plus(5),
lblMessage.Width().EqualTo(350.0f),
lblSelectCompany.Below(lblMessage, 5).Plus(5),
lblSelectCompany.WithSameWidth(scrollView)
);
DataSet MyQuestionsDataset = myOMLService.GetQuestions(myusername, mypassword, "REGISTRATION", "EN");
Questions.Add("Select Challenge Question");
foreach (DataRow MyDataRow in MyQuestionsDataset.Tables[0].Rows)
{
Questions.Add(MyDataRow["QUESTION"].ToString());
};
ConfigureChallengePicker(challengeQuestion, Questions);
}
void ConfigureChallengePicker(UITextField pickerTextField, List<string> theData)
{
PickerViewModel MyModel = new PickerViewModel();
MyModel._pickerSource = theData;
var picker = new UIPickerView
{
Model = MyModel,
ShowSelectionIndicator = true
};
var screenWidth = UIScreen.MainScreen.Bounds.Width;
var pickerToolBar = new UIToolbar(new RectangleF(0, 0, (float)screenWidth, 44)) { BarStyle = UIBarStyle.Default, Translucent = true };
var flexibleSpaceButton = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
var doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, (sender, e) => pickerTextField.ResignFirstResponder());
doneButton.Clicked += (object sender, EventArgs e) =>
{
pickerTextField.Text = MyModel.SelectedItem;
};
pickerToolBar.SetItems(new[] { flexibleSpaceButton, doneButton }, false);
pickerTextField.InputView = picker;
pickerTextField.InputAccessoryView = pickerToolBar;
}
}
现在可以很好地滚动了，虽然帧尺寸有点大，但我必须想出一种方法来根据内容量来计算它，你会认为它是内置的，但不是。