我需要为使用 Xamarin.iOS 的演示创建一个简单的登录表单（用户名/密码），但我现在不想为此深入研究 XCode。
可能类似于您可以在其他 .NET 技术中执行的操作：
var panel = new Panel();
panel.Controls.Add(new Label("Username"));
panel.Controls.Add(new TextBox("Password"));
有没有办法以编程方式在 Xamarin for iOS 中创建简单的界面？还是只需要使用 XCode 来设计接口？
是的，您可以通过代码创建 UI。使用 XCode 的设计器是完全可选的。
UIButton btn = new UIButton (UIButtonType.RoundedRect);
btn.SetTitle ("Hello", UIControlState.Normal);
btn.Frame = new RectangleF (50, 50, 50, 50);
btn.TouchDown += delegate {
UIAlertView alert = new UIAlertView("Hello", "Hello, Xamarin!", null, "OK");
alert.Show();
};
this.View.AddSubview (btn);
对于数据输入 UI，您可能还需要考虑使用MonoTouch.Dialog。
也许游戏有点晚了，但是您是否尝试过仅使用 UIAlertView 然后执行以下操作：
yourAlertView.AlertViewStyle = UIAlertViewStyle.LoginAndPasswordInput;
它将创建一个弹出登录窗口，其中包含已经为您设置的文本字段。
@implementation MyViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
#pragma mark - View lifecycle
/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView
{
}
*/
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self.view setBackgroundColor:[UIColor whiteColor]];
currentTF = [[UITextField alloc]init];
[self createLoginUI];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:YES];
}
-(void)createLoginUI
{
//For My Label
UILabel *MyLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 340, 20)];
MyLabel.text = @"My Login Screen";
MyLabel.textAlignment = UITextAlignmentCenter;
MyLabel.textColor = [UIColor blackColor];
MyLabel.backgroundColor=[UIColor cyanColor];
MyLabel.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[self.view addSubview:MyLabel];
//For Email Label
UILabel *emailLabel = [[UILabel alloc]initWithFrame:CGRectMake(20, 40, 50, 20)];
emailLabel.text = @"Email:";
emailLabel.textColor = [UIColor blackColor];
emailLabel.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[self.view addSubview:emailLabel];
//For Email UITextField
emailTF = [[UITextField alloc]initWithFrame:CGRectMake(85, 40, 200, 30)];
[emailTF setBorderStyle:UITextBorderStyleRoundedRect];
emailTF.delegate = self;
emailTF.tag = 101;
[self.view addSubview:emailTF];
//For Password Label
UILabel *passwordLabel = [[UILabel alloc]initWithFrame:CGRectMake(20, 80, 100, 20)];
passwordLabel.text = @"Password:";
passwordLabel.textColor = [UIColor blackColor];
passwordLabel.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[self.view addSubview:passwordLabel];
//For Password UITextField
passwordTF = [[UITextField alloc]initWithFrame:CGRectMake(105, 80, 180, 30)];
passwordTF.secureTextEntry = YES;
passwordTF.delegate = self;
passwordTF.tag = 102;
[passwordTF setBorderStyle:UITextBorderStyleRoundedRect];
[self.view addSubview:passwordTF];
//For Login Button
UIButton *loginBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[loginBtn setTitle:@"Login" forState:UIControlStateNormal];
loginBtn.frame = CGRectMake(120, 130, 50, 20);
loginBtn.backgroundColor = [UIColor greenColor];
[loginBtn addTarget:self action:@selector(loginBtnClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:loginBtn];
//For Forgot Password Button
UIButton *forgotPasswdBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[forgotPasswdBtn setTitle:@"Forgot Password" forState:UIControlStateNormal];
forgotPasswdBtn.frame = CGRectMake(30, 170, 120, 20);
forgotPasswdBtn.backgroundColor = [UIColor greenColor];
[forgotPasswdBtn addTarget:self action:@selector(forgotPasswordBtnClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:forgotPasswdBtn];
//For sign up Button
UIButton *signUpBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[signUpBtn setTitle:@"SignUp" forState:UIControlStateNormal];
signUpBtn.frame = CGRectMake(170, 170, 60, 20);
signUpBtn.backgroundColor = [UIColor greenColor];
[signUpBtn addTarget:self action:@selector(signUpBtnClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:signUpBtn];
//For remember Me
UIButton *remBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[remBtn setImage:[UIImage imageNamed:@"uncheck.jpeg"] forState:UIControlStateNormal];
remBtn.frame = CGRectMake(90, 130, 20, 20);
[remBtn addTarget:self action:@selector(remBtnClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:remBtn];
}
-(void)loginBtnClick
{
[currentTF resignFirstResponder];
if ([self validateLoginScreen])
{
//To clear textFields
emailTF.text= @"";
passwordTF.text = @"";
//For Home View
homeViewObj = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];
[homeViewObj setBackgroundColor:[UIColor purpleColor]];
[self.view addSubview:homeViewObj];
//For Logout Button
UIButton *logOutBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[logOutBtn setTitle:@"Logout" forState:UIControlStateNormal];
logOutBtn.frame = CGRectMake(170, 170, 60, 20);
// logOutBtn.backgroundColor = [UIColor greenColor];
[logOutBtn addTarget:self action:@selector(logOutBtnClick) forControlEvents:UIControlEventTouchUpInside];
[homeViewObj addSubview:logOutBtn];
}
}
-(void)forgotPasswordBtnClick
{
UIAlertView *alertview=[[UIAlertView alloc]initWithTitle:@"Forgot Password" message:@"please enter sequrity qustion" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
alertview.alertViewStyle=UIAlertViewStylePlainTextInput;
[alertview textFieldAtIndex:0].delegate=self;
[alertview show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex==1)
{
UIAlertView *alertview2=[[UIAlertView alloc]initWithTitle:@"Reset password" message:@"new password is send to your mail id" delegate:self cancelButtonTitle:nil otherButtonTitles:@"ok", nil];
[alertview2 show];
}
}
-(void)signUpBtnClick
{
//[currentTF resignFirstResponder];
viewobjsignup=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];
[viewobjsignup setBackgroundColor:[UIColor grayColor]];
[self.view addSubview:viewobjsignup];
UILabel *MyLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 340, 20)];
MyLabel.text = @"Register Here";
MyLabel.textAlignment = UITextAlignmentCenter;
MyLabel.textColor = [UIColor blackColor];
MyLabel.backgroundColor=[UIColor cyanColor];
MyLabel.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:MyLabel];
//username
UILabel *usernmobj=[[UILabel alloc]initWithFrame:CGRectMake(20, 40, 100, 20)];
usernmobj.text=@"UserName";
usernmobj.textAlignment = UITextAlignmentCenter;
usernmobj.textColor = [UIColor blackColor];
usernmobj.backgroundColor=[UIColor cyanColor];
usernmobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:usernmobj];
userTF = [[UITextField alloc]initWithFrame:CGRectMake(120, 40, 150, 30)];
//userTF.secureTextEntry = YES;
userTF.delegate = self;
// userTF.tag = 102;
[userTF setBorderStyle:UITextBorderStyleRoundedRect];
[viewobjsignup addSubview:userTF];
userTF.returnKeyType=UIReturnKeyDone;
//email id
UILabel *Emailnmobj=[[UILabel alloc]initWithFrame:CGRectMake(20, 80, 80, 20)];
Emailnmobj.text=@"Email Id";
Emailnmobj.textAlignment = UITextAlignmentCenter;
Emailnmobj.textColor = [UIColor blackColor];
Emailnmobj.backgroundColor=[UIColor cyanColor];
Emailnmobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:Emailnmobj];
EmailTF = [[UITextField alloc]initWithFrame:CGRectMake(120, 80, 150, 30)];
//EmailTF.secureTextEntry = YES;
EmailTF.delegate = self;
// EmailTF.tag = 102;
[EmailTF setBorderStyle:UITextBorderStyleRoundedRect];
[viewobjsignup addSubview:EmailTF];
EmailTF.returnKeyType=UIReturnKeyDone;
//password
UILabel *passnmobj=[[UILabel alloc]initWithFrame:CGRectMake(20,120,100,20)];
passnmobj.text=@"Password";
passnmobj.textAlignment = UITextAlignmentCenter;
passnmobj.textColor = [UIColor blackColor];
passnmobj.backgroundColor=[UIColor cyanColor];
passnmobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:passnmobj];
pwdTF = [[UITextField alloc]initWithFrame:CGRectMake(120, 120, 170, 30)];
pwdTF.secureTextEntry = YES;
pwdTF.delegate = self;
// pwdTF.tag = 102;
[pwdTF setBorderStyle:UITextBorderStyleRoundedRect];
[viewobjsignup addSubview:pwdTF];
pwdTF.returnKeyType=UIReturnKeyDone;
//conform password
UILabel *comfobj=[[UILabel alloc]initWithFrame:CGRectMake(20,160,100,20)];
comfobj.text=@"Confpass";
//comfobj.textAlignment = UITextAlignmentCenter;
comfobj.textColor = [UIColor blackColor];
comfobj.backgroundColor=[UIColor cyanColor];
comfobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:comfobj];
comfTF = [[UITextField alloc]initWithFrame:CGRectMake(120, 160, 180, 30)];
comfTF.secureTextEntry = YES;
comfTF.delegate = self;
// comfTF.tag = 102;
[comfTF setBorderStyle:UITextBorderStyleRoundedRect];
[viewobjsignup addSubview:comfTF];
comfTF.returnKeyType=UIReturnKeyDone;
//for dob
UILabel *Dboobj=[[UILabel alloc]initWithFrame:CGRectMake(20, 190, 140, 20)];
Dboobj.text=@"DOB";
Dboobj.textAlignment = UITextAlignmentCenter;
Dboobj.textColor = [UIColor blackColor];
Dboobj.backgroundColor=[UIColor cyanColor];
Dboobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:Dboobj];
//textfiels for date
UITextField *dateobj=[[UITextField alloc]initWithFrame:CGRectMake(20, 210, 90, 30)];
[dateobj setBorderStyle:UITextBorderStyleRoundedRect];
dateobj.placeholder=@"Date";
[dateobj setKeyboardType:UIKeyboardTypeNumberPad];
dateobj.tag=105;
dateobj.delegate=self;
[viewobjsignup addSubview:dateobj];
dateobj.returnKeyType=UIReturnKeyDone;
// //txtfield for DOB_date
// UITextField * dob_dateLab=[[UITextField alloc]initWithFrame:CGRectMake(20, 270, 90, 30)];
// [dob_dateLab setBorderStyle:UITextBorderStyleRoundedRect];
// dob_dateLab.placeholder=@"Date";
// [dob_dateLab setKeyboardType:UIKeyboardTypeNumberPad];
// dob_dateLab.tag=104;
// dob_dateLab.delegate = self;
// [viewobjsignup addSubview:dob_dateLab];
//txtfield for month
UITextField * monthobj=[[UITextField alloc]initWithFrame:CGRectMake(110, 210, 90, 30)];
[monthobj setBorderStyle:UITextBorderStyleRoundedRect];
monthobj.delegate = self;
[monthobj setKeyboardType:UIKeyboardTypeNumberPad];
monthobj.tag=106;
monthobj.placeholder=@"Month";
[viewobjsignup addSubview:monthobj];
monthobj.returnKeyType=UIReturnKeyDone;
//txtfield for year
UITextField * yearobj=[[UITextField alloc]initWithFrame:CGRectMake(200, 210, 90, 30)];
[yearobj setBorderStyle:UITextBorderStyleRoundedRect];
yearobj.delegate = self;
[yearobj setKeyboardType:UIKeyboardTypeNumberPad];
yearobj.tag=107;
yearobj.placeholder=@"Year";
[viewobjsignup addSubview:yearobj];
yearobj.returnKeyType=UIReturnKeyDone;
//for label gender
UILabel *genderobj=[[UILabel alloc]initWithFrame:CGRectMake(20, 240, 80, 20)];
genderobj.text=@"Gender";
genderobj.textAlignment = UITextAlignmentCenter;
genderobj.textColor = [UIColor blackColor];
genderobj.backgroundColor=[UIColor cyanColor];
genderobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:genderobj];
//for male
UILabel *maleobj=[[UILabel alloc]initWithFrame:CGRectMake(120, 240, 40, 20)];
maleobj.text=@"male";
maleobj.textAlignment = UITextAlignmentCenter;
maleobj.textColor = [UIColor blackColor];
maleobj.backgroundColor=[UIColor cyanColor];
maleobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:maleobj];
//for female
UILabel *femaleobj=[[UILabel alloc]initWithFrame:CGRectMake(200, 240, 80, 20)];
femaleobj.text=@"Female";
femaleobj.textAlignment = UITextAlignmentCenter;
femaleobj.textColor = [UIColor blackColor];
femaleobj.backgroundColor=[UIColor cyanColor];
femaleobj.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
[viewobjsignup addSubview:femaleobj];
//for male radio but
malebut=[UIButton buttonWithType:UIButtonTypeCustom];
[malebut setImage:[UIImage imageNamed:@"radio_check.jpeg"] forState:UIControlStateNormal];
//[malebut setImage:[UIImage imageNamed:@"radiobutton-checked.png"] forState:UIControlStateNormal];
malebut.frame = CGRectMake(160, 240, 20, 20);
[malebut addTarget:self action:@selector(radioBtnClick_male) forControlEvents:UIControlEventTouchUpInside];
[viewobjsignup addSubview:malebut];
//For female radio but
femalebut = [UIButton buttonWithType:UIButtonTypeCustom];
[ femalebut setImage:[UIImage imageNamed:@"radio_uncheck.jpeg"] forState:UIControlStateNormal];
femalebut.frame = CGRectMake(270, 240, 20, 20);
[ femalebut addTarget:self action:@selector(radioBtnClick_female) forControlEvents:UIControlEventTouchUpInside];
[viewobjsignup addSubview:femalebut];
//For Save button
UIButton * savebut = [UIButton buttonWithType:UIButtonTypeCustom];
[savebut setTitle:@"Save" forState:UIControlStateNormal];
savebut.titleLabel.backgroundColor=[UIColor blackColor];
savebut.frame = CGRectMake(90, 430, 70, 20);
[savebut addTarget:self action:@selector(saveBtnClick) forControlEvents:UIControlEventTouchUpInside];
[viewobjsignup addSubview:savebut];
//For cancel button
UIButton * cancelBtn = [UIButton buttonWithType:UIButtonTypeCustom];
cancelBtn.frame = CGRectMake(150, 430, 60, 20);
[cancelBtn setTitle:@"Cancel" forState:UIControlStateNormal];
cancelBtn.titleLabel.backgroundColor=[UIColor blackColor];
cancelBtn.backgroundColor=[UIColor blackColor];
[cancelBtn addTarget:self action:@selector(cancelBtnClick1) forControlEvents:UIControlEventTouchUpInside];
[viewobjsignup addSubview:cancelBtn];
//register button
// UIButton *registerbut=[UIButton buttonWithType:UIButtonTypeRoundedRect];
// [registerbut setTitle:@"Register" forState:UIControlStateNormal];
// [registerbut setFrame:CGRectMake(20,200,160,20)];
// [registerbut addTarget:self action:@selector(Registerclick) forControlEvents:UIControlEventTouchUpInside];
// [viewobjsignup addSubview:registerbut];
// //labal
// myleb=[[UILabel alloc]initWithFrame:CGRectMake(20,160,140,20)];
// //comfobj.text=@" ConfermPassword";
// myleb.textAlignment = UITextAlignmentCenter;
// myleb.textColor = [UIColor blackColor];
// myleb.backgroundColor=[UIColor cyanColor];
// myleb.font = [UIFont fontWithName:@"Arial-Bold" size:14.0];
// [self.view addSubview: myleb];
}
-(void)radioBtnClick_female
{
[femalebut setImage:[UIImage imageNamed:@"radio_check.jpeg"] forState:UIControlStateNormal];
[malebut setImage:[UIImage imageNamed:@"radio_uncheck.jpeg"] forState:UIControlStateNormal];
}
-(void)radioBtnClick_male
{
[femalebut setImage:[UIImage imageNamed:@"radio_uncheck.jpeg"] forState:UIControlStateNormal];
[malebut setImage:[UIImage imageNamed:@"radio_check.jpeg"] forState:UIControlStateNormal];
}
-(void)logOutBtnClick
{
[homeViewObj removeFromSuperview];
}
-(void)remBtnClick
{
}
-(void)cancelBtnClick1
{
[viewobjsignup removeFromSuperview];
}
-(void)saveBtnClick
{
[currentTF resignFirstResponder];
[self validregister];
}
-(void)validregister
{
if(userTF.text.length==00||pwdTF.text.length==00||comfTF.text.length==00)
{
[self showAlertMessage:@"Please enter all nesessary field"];
}
else if([self emailValidation:EmailTF.text]==NO)
{
[self showAlertMessage:@"Please enter valid email address"];
EmailTF.text=@"";
}
else if([pwdTF.text isEqual:comfTF.text]==NO)
{
[self showAlertMessage:@"password mismatch"];
// userTf.text=@"";
comfTF.text=@"";
}
else
{
EmailTF.text=@"";
pwdTF.text=@"";
[user setObject:EmailTF.text forKey:@"username plist"];
[user setObject:pwdTF.text forKey:@"password plist"];
[user synchronize];
[self showAlertMessage:@"You are REGISTERED now"];
[viewobjsignup removeFromSuperview];
}
}
//-(void)Registerclick
//{
// UIAlertView *alertview1 = [[UIAlertView alloc]initWithTitle:@"Welcome" message:@"Your registration is successful..!" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
// [alertview1 show];
// [viewobjsignup removeFromSuperview];
//}
//
#pragma mark Validation Method
-(BOOL)validateLoginScreen
{
if (emailTF.text.length==0)
{
[self showAlertMessage:@"Please enter email address"];
return NO;
}
else if ([self emailValidation:emailTF.text]==NO)
{
[self showAlertMessage:@"Please enter valid email address"];
return NO;
}
else if (passwordTF.text.length==0)
{
[self showAlertMessage:@"Please enter password "];
return NO;
}
return YES;
}
-(void)showAlertMessage:(NSString *)msg
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Note" message:msg delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
[alert show];
}
-(BOOL) emailValidation:(NSString *)emailTxt
{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:emailTxt];
}
#pragma mark TextField Delegates
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
// if(textField.tag==101)
// {
// [passwordTF becomeFirstResponder];
// }
// else if(textField.tag==102)
// {
// [passwordTF resignFirstResponder];
// }
[currentTF resignFirstResponder];
return YES;
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[currentTF resignFirstResponder];
}
-(void)textFieldDidBeginEditing:(UITextField *)textField
{
currentTF = textField;
[self animateTextField:textField up:YES];
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
currentTF = textField;
[self animateTextField:textField up:NO];
}
-(void)animateTextField:(UITextField*)textField up:(BOOL)up
{
int movementDistance = 0; // tweak as needed
if (textField.tag==105||textField.tag
==106||textField.tag==107)
{
movementDistance = -130;
}
else
{
movementDistance = 00;
}
const float movementDuration = 0.3f; // tweak as needed
int movement = (up ? movementDistance : -movementDistance);
[UIView beginAnimations: @"animateTextField" context: nil];
[UIView setAnimationBeginsFromCurrentState: YES];
[UIView setAnimationDuration: movementDuration];
self.view.frame = CGRectOffset(self.view.frame, 0, movement);
[UIView commitAnimations];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
Xamarin 5.10：
UIButton sampleButton1;
UITextField sampleTextField1;
UITextField sampleTextField2;
public void addUIButtonToView ()
{
this.sampleButton1 = new UIButton (UIButtonType.RoundedRect);
sampleButton1.Frame = new CoreGraphics.CGRect (10f, 100f, 300f, 50f);
this.sampleButton1.SetTitle ("Sample Button", UIControlState.Normal);
this.sampleButton1.SetNeedsLayout ();
sampleButton1.TouchUpInside += OnSpeakButtonTapped;
this.View.AddSubview (sampleButton1);
}
void OnSpeakButtonTapped (object sender, EventArgs e)
{
// This is the event handler for the actual UIButton TouchUpInside event.
Console.WriteLine ("button tapped");
}
public void addUITextFieldToView ()
{
//Initiate UITextField Delegates
sampleTextField1 = new UITextField ();
sampleTextField1.Frame = new CoreGraphics.CGRect (10f, 100f, 300f, 50f);
//sampleTextField1.Text = "This is Xamarin iOS TextField";
sampleTextField1.BackgroundColor = UIColor.LightGray;
sampleTextField1.Alpha = 1.0f;
sampleTextField1.TextAlignment = UITextAlignment.Center;
sampleTextField1.Font = UIFont.FromName (name: "Arial", size: 15f);
sampleTextField1.Placeholder = "Enter text here";
sampleTextField1.KeyboardType = UIKeyboardType.EmailAddress;
sampleTextField1.ReturnKeyType = UIReturnKeyType.Default;
sampleTextField1.MinimumFontSize = 17f;
sampleTextField1.AdjustsFontSizeToFitWidth = true;
//Additional
sampleTextField2 = new UITextField ();
sampleTextField2.Frame = new CoreGraphics.CGRect (this.View.Frame.X + 5, this.View.Frame.Y + 250, this.View.Frame.Width - 10, this.View.Frame.Height / 3);
sampleTextField2.BackgroundColor = UIColor.FromPatternImage (UIImage.FromFile ("Real-Estate_4.jpg"));
sampleTextField2.AdjustsFontSizeToFitWidth = true;
sampleTextField2.MinimumFontSize = 12f;
//Setting Boarder and curved edges
sampleTextField2.Layer.BorderWidth = 1f;
sampleTextField2.Layer.CornerRadius = 5f;
sampleTextField2.Layer.BorderColor = UIColor.Black.CGColor;
//Shadows
sampleTextField2.Layer.ShadowColor = UIColor.DarkGray.CGColor;
sampleTextField2.Layer.ShadowOffset = new CoreGraphics.CGSize (3f, 3f);
sampleTextField2.Layer.ShadowOpacity = 0.3f;
sampleTextField2.Layer.ShadowRadius = 3f;
this.View.AddSubview (sampleTextField1);
this.View.AddSubview (sampleTextField2);
//Adding Delegate Methods
this.enableUITextFieldDelegateMethods ();
}
void enableUITextFieldDelegateMethods ()
{
this.sampleTextField1.ShouldReturn += (textField) => {
sampleTextField2.BecomeFirstResponder ();
textField.ResignFirstResponder ();
return true;
};
this.sampleTextField1.ShouldBeginEditing += (textField) => {
//Write here
return true;
};
this.sampleTextField1.ShouldEndEditing += (textField) => {
//Write here
return true;
};
this.sampleTextField1.ShouldClear += (textField) => {
//Write here
return true;
};
this.sampleTextField1.ShouldChangeCharacters = (UITextField txt, NSRange range, string sampleTxt) => {
var newLength = txt.Text.Length + sampleTxt.Length - range.Length;
return newLength <= 9;
};
}