How to Define Text Field Validation iPhone

Ads
 

How to Define Text Field Validation iPhone

Hi,

Can anybody explain me how to define textfield validation iPhone program. please phone online help reference or example.

Thanks,

View Answers

April 12, 2011 at 12:07 PM

make a validation class and pass ur fields and do validation as u like...
for eg.

import <Foundation/Foundation.h>

@interface validations : NSObject {
    UIAlertView *alert<em>email</em>invalid;
    BOOL isValid;

}
@property(nonatomic, retain) UIAlertView *alert<em>email</em>invalid;
-(id)init;
-(BOOL)emailvalidity:(NSString *)emailString;
@end

-(BOOL)emailvalidity:(NSString *)emailString {
    NSString *emailRegex = @"[A-Z0-9a-z._%+-][email protected][A-Za-z0-9.-]+\.[A-Za-z]{2,4}"; 
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; 

return [emailTest evaluateWithObject:emailString];
}

-(void)dealloc {

[alert<em>email</em>invalid release];
    [super dealloc];
} <br />
@end

Ads









Related Tutorials/Questions & Answers:
How to Define Text Field Validation iPhone
How to Define Text Field Validation iPhone  Hi, Can anybody explain me how to define textfield validation iPhone program. please phone online help reference or example. Thanks
validate text field iPhone
validate text field iPhone  i got two different UITextfield in my iPhone application for user login. Just wondering how to validate
Advertisements
how to perform a validation for the field
how to perform a validation for the field  hi, function checkForm...="text" name="name" size="30"><br> Enter an Email Address : <input type="text" name="email" size="30"><br> Enter Address
how to perform a validation for the field
how to perform a validation for the field  hi, function checkForm...="text" name="name" size="30"><br> Enter an Email Address : <input type="text" name="email" size="30"><br> Enter Address
File format validation and text field validation in java swings
File format validation and text field validation in java swings   i am reading a jpg image file throuh jfilechooser in java swings,when we press browse button for selecting file it will display filechooser in this process when
i want validation for one text field and text area,email,combobox, in that email will validte by useing regular expressions?
i want validation for one text field and text area,email,combobox, in that email will validte by useing regular expressions?  i want validation for one text field and text area,email,combobox, in that email will validte by useing
Login Password Validation iPhone / iPAD
Login Password Validation iPhone / iPAD  HOW TO WRITE A TEST CASE TO SET THE VALIDATION FOR LOGIN AND PASSWORD FIELD IN OBJECTIVE C, IOS.   ...([loginView.passwordField.text length] > 0, @"The field should not be empty"); [loginView release
CALULATION IN TEXT FIELD
CALULATION IN TEXT FIELD  Suppose 3 text Field first amount ,second amount and third sum of these amount,this amount will appear when tab in next filed(i don't want use any type button) in java swing HOW? PLEASE HELP
converting field to text sql
converting field to text sql  I wanted to convert the field to TEXT in SQL.. is it possible?   SQL - Converting the field to TEXT works... the field to TEXT works SELECT CONVERT(TEXT,fld_name) FROM TABLE_NAME
I need jsp code for how to write text field value into property file.
I need jsp code for how to write text field value into property file.  Hi , I need to set the text field value into property file using jsp code. Example : Username : Valar , I have entered the value "Valar" in the text field
Text field save as word file
Text field save as word file  Dear experts At run how to save set of text field contains text into single Word file. To save in our desktop computer. Solve my problem
how to define variable in node js
how to define variable in node js  Hi, I want to know the correct way to define variable in node js. how to define variable in node js? Thanks   Hi, Node js is nothing but server-side JavaScript. You can define
how to define variable in node js
how to define variable in node js  Hi, I want to know the correct way to define variable in node js. how to define variable in node js? Thanks   Hi, Node js is nothing but server-side JavaScript. You can define
swing text field problem
swing text field problem  I want to navigate the content of text field from one class to another and viceversa through button but when I am getting the text from first class I am getting null value.please help me..here
swing text field problem
swing text field problem  I want to navigate the content of text field from one class to another and viceversa through button but when I am getting the text from first class I am getting null value.please help me..here
How to define a constant variable in Java?
How to define a constant variable in Java?   Hi, How to define a constant variable in Java? thanks   HI, The Constants variables are declared using the final keyword. The values of the constant can't be changed
Digit Only text field
Digit Only text field  How should we accept digits only in a textbox? (using JSTL only, without Javascript
how can retrieve more than one values in text field using ajax?
how can retrieve more than one values in text field using ajax?  im... first then in mysql db retrieve seat numbers 1,2,3,4 in text boxes problem...($result)) { echo "<input name='seat' type='text' value=".$row['Seat_Number
How to use Date Picker iPhone
How to use Date Picker iPhone  Hi, I am beginner in mobile Application platform. I want to develop a small application in iphone platform to Show current date and display alert view message. So, how to define the date picker
clearing text field in spring form
clearing text field in spring form  hi, I have spring form in that i have security question dropdown field and security answer text field ,when i submitted form with errors the answers text field value should be clear, for this i
ModuleNotFoundError: No module named 'django-short-text-field'
: No module named 'django-short-text-field' How to remove the ModuleNotFoundError: No module named 'django-short-text-field' error? Thanks   ...ModuleNotFoundError: No module named 'django-short-text-field'  Hi
ModuleNotFoundError: No module named 'django-storage-text-field'
: No module named 'django-storage-text-field' How to remove the ModuleNotFoundError: No module named 'django-storage-text-field' error? Thanks  ...ModuleNotFoundError: No module named 'django-storage-text-field'  Hi
ModuleNotFoundError: No module named 'django-storage-text-field'
: No module named 'django-storage-text-field' How to remove the ModuleNotFoundError: No module named 'django-storage-text-field' error? Thanks  ...ModuleNotFoundError: No module named 'django-storage-text-field'  Hi
regarding out put display in html text field
regarding out put display in html text field  how to dispaly the output coming from servlet in a particular text field of html
How to set NSZombieEnabled iPhone
How to set NSZombieEnabled iPhone  Hi, In my application I have to find and fix the object release issue. How to set NSZombieEnabled iPhone to find the bugs? Thanks   Hi, Please see the thread NSZombieEnabled iPhone
Text Field in HTML
Text Field in HTML       The Text Field in HTML are one line areas, which enable the user... Text Field in HTML.In this Tutorial, the code create a text field in HTML page
How to Make iPhone Window Application
How to Make iPhone Window Application  Hi, For Making iphone window application, what parameters i have to follow or provide example related to iphone window application. Thanks
How to Define Vector Iterator in Java Program
How to Define Vector Iterator in Java Program  Hi, I want to develop a small application where i want to define vector iterator in my Java Programming. Kindly Suggest any online reference for references. Thanks
Can i insert image into struts text field
Can i insert image into struts text field  please tell me can i insert image into text field
How to Create Segment Application with iPhone
How to Create Segment Application with iPhone  Hi, i am fresher in iphone application. How can i will create segment application in iphone. So, kindly help me or provide online example reference. Thanks
How to open URL in iPhone SDK
How to open URL in iPhone SDK  In my iPhone application ..i wanted to open a url in the application. Is it possible? If yes how will i come back to my application

Ads