Latest Tutorials| Questions and Answers|Ask Questions?|Site Map




Have Programming Question? Ask it here!
 
 
 


Deepak Kumar
UItextfield blank
1 Answer(s)      3 years and 8 months ago
Posted in : MobileApplications


Hi,

How I can check if UITextfield is blank and then display error to the user?

Thanks


Advertisement
View Answers

December 5, 2010 at 8:11 PM


Hi,

Following code can be used to validate the user input in iPhone and iPad applications.

if([loginID.text isEqualToString:@""]) {
    UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Field Error"
                message:@"Please enter Login ID!" delegate:self 
                cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alertView show];
    [alertView release];
}

Thanks



Related Tutorials/Questions & Answers:
UItextfield blank
UItextfield blank  Hi, How I can check if UITextfield is blank and then display error to the user? Thanks   Hi, Following code can be used to validate the user input in iPhone and iPad applications. if([loginID.text
UITextfield checking
UITextfield checking  hello,, how can i check UITextfield length or any specific value..   hii, here is some code for textfield checking if ([name.text isEqualToString:@"hello"]) or if (name.text.length<1
Advertisements
UITextField Programmatically iPhone
UITextField Programmatically iPhone  How to create UITextField Programmatically in iPhone
uitextfield append text
uitextfield append text  How can i append text or string to UITextField in my iPhone application? Thanks!   Appending a string / text to a UITextField -(Void)buttonPressed { NSString *myS = [NSString stringWithFormat
UITextField Background Image
UITextField Background Image  How can i set a background image on UITextField. I have placed that UITextField on UIToolBar.   Code to Set a Background Image on UITextField - (void)viewDidLoad { [super viewDidLoad
uitextfield disable keyboard
uitextfield disable keyboard  How to disable keyboard of UITextView in iPhone SDK application?   There are two ways to disable the keyboard of UITextField in iPhone SDK application - (BOOL)textFieldShouldBeginEditing
UITextfield Background Color
UITextfield Background Color  In my iPhone application, i am using text field as a search field. The code is working fine but the problem...; iPhone UITextField Background Color Set the text field background color
PHP Prevent blank upload
PHP Prevent blank upload  In my small PHP application, i am posting... is that it also accepts blank data as well as duplicate value. Is there any way to check and prevent it from posting the blank value? Thanks
Struts2 blank application - Struts
Struts2 blank application  Hi I am new to struts2 and i am trying to run the strutsblank application by following the following Link; http://www.roseindia.net/struts/struts2/index.shtml As per the instructions given
How to design a blank CD, design a blank CD, blank CD
How to design a blank CD       This is a blank CD example, You will learn here how to make a blank CD by taking help of this example. New File: Take a new file with any
Running problem with NoughtsAndCrossesGame in blank
Running problem with NoughtsAndCrossesGame in blank  Hi i was having problem created NoughtsAndCrossesGame in end the it works but i runs the gui in blank. Its another way to solve it /* * To change this template, choose
Validaton(Checking Blank space) - Spring
Validaton(Checking Blank space)  Hi i am using java springs .I am having problem in doing validation. I am just checking blank space. This is my controller. I named it salescontroller. package controller; import
MySQL Blank Field
MySQL Blank Field This example illustrates how to find Blank field by the MySQL Query. In the table 'example' two t_count fields are blank and we find both field which has some value by query 'select * from example where t_count
blank space in input field - Java Beginners
blank space in input field  I retrieved the fields from my mysql table...If the field contains null value i want to display a blank space in input field(text box)..but i am displaying null how to overcome this.. u r help
Creating Blank DOM Document
Creating Blank DOM Document       This tutorial shows you how to create blank DOM document. JAXP (Java... of the class DocumentBuilder is used to create a blank document. The newDocument
becomeFirstResponder UITextField
becomeFirstResponder UITextField In this iPhone SDK example, we are going... of first text field is left blank. Basically, in this application we... will check if the first text field is blank or not. If the first text field
insertin form data into databse and blank all form field when click on submit button
insertin form data into databse and blank all form field when click on submit button  sir, i useing the jsp. i want insert form data into Ms-Access database when click on submit button and blank all form field after inserting
Trim String Example
; In this section, you will learn how to remove the blank spaces. For removing  the blank spaces use trim() method that removes the blank spaces... the blank spaces from both ends of the given string (Front and End).  Here
Validator in Flex4
Validator in Flex4: The Validator class validates the text field value. If the text is blank it will give an error message. If you will write anything in the text field then it will not generate a error message. Basically it is used
Designing Printing Motion of a Paper
printer work effect. I have taken a printer and a blank paper. A blank paper...) and draw a rectangle shape like a blank paper as I have done here... this image. Text Paper: Take a new file with accurate size of the blank paper
Download Struts 2.3.15.1
Download Struts 2.3.15.1 from apache website and run the blank application... the Struts 2.3.15.1 and running the blank application on Tomcat 7: Step 1... of Tomcat 7 or any other Servlet container. Step 3: To run the Struts 2 blank
html code for student registration form
that resets all fields to blank. We have used JavaScript validation
HTML file upload example
Reset button that resets all fields to blank and we have used Save button
Resizing Height of UITextView iPhone
Resizing Height of UITextView iPhone  Hi all, Is it possible to resize the height of the UITextField in objective C
hide keyboard iphone
- (BOOL)textFielsShouldReturn:(UITextField *)textField { [textField resignFirstResponder]; return YES; } Where textField is the object of your UITextField
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
java
java  write a program to accept strig from user and find out vowel,blank and non blank characters
UITextview inside UITableviewcell
UITextview inside UITableviewcell  How can i adjust the height of UITableCell view according to the UITextfield height inside it?   uitableviewcell textlabel height - (CGFloat)tableView:(UITableView *)tableView
resign first responder keyboard
)textFieldShouldReturn:(UITextField *)textField { [textField resignFirstResponder... in it: - (BOOL)textFieldShouldReturn:(UITextField *)textField { [textField
ckeditor <p> and &nbsp;
ckeditor and    how to prevent ckeditor from adding blank spaces and paregraph in text area
ckeditor <p> and &nbsp;
ckeditor and    how to prevent ckeditor from adding blank spaces and paregraph in text area
PHP NULL Type
$a; echo "1=True and Blank=False".is_null($a)."<br/>"; $a=23; echo "1=True and Blank=False".is_null($a)."<br/>"; $a=NULL; echo "1=True and Blank=False".is_null($a)."<
iPhone Text Field Border 
: IBOutlet UITextField *textField;     IBOutlet UITextField... UITextField *textField2;    
XML validation
XML validation  Hi, I want to validate the XML file. If there is any blank or white space in the XML file, It should throw error message
uikeyboard done button/return button
- (BOOL)textFieldShouldReturn:(UITextField *)textField { [button1
iPhone Keyboard Hides TextField
text field to file owner. Now, declare UITextField* activeField; BOOL... = NO; } - (void)textFieldDidBeginEditing:(UITextField *)textField { activeField = textField; } - (void)textFieldDidEndEditing:(UITextField
iPhone Text Field Validation
... - (BOOL)textField:(UITextField *)textField... UITextField *textValue; } @property (nonatomic retain) IBOutlet UITextField *textValue; @end validateViewController.m
iPhone SDK Examples
related to the UI components such as UIButton, UILable, UITextfield etc
Creating a properties file
be blank errorUserNameLength=User Name must be of 6-20 characters...=Address cannot be blank errorCountryBlank=Country cannot be blank errorStateBlank=State cannot be blank errorContactNumberBlank=Contact
Setting up the database in PHP
6 BLANK PRIMARY YES BLANK... None 15 YES BLANK BLANK BLANK last
Validation
Validation  Hi.. How to Validate blank textfield in java that can accepts only integers?   Have a look at the following link: http://www.roseindia.net/tutorial/java/swing/howtovalidatetextfield.html
XML remove tags
XML remove tags  when i remove a tag from xml, it create blank spaces or next line. how i protect it to updae in my xml
FRAME
FRAME  WHILE I'M RUNNINGFILE OF A GUI PROGRAMME(JDBC CONNECTION) INSTEAD OF OUTPUT FRAME ONLY TWO BLANK FRAMES ARE GETTING DISPLAYD... CAN ANYONE HELP ME TO SOLVE DS PROBLEM
FRAME
FRAME  WHILE I'M RUNNINGFILE OF A GUI PROGRAMME(JDBC CONNECTION) INSTEAD OF OUTPUT FRAME ONLY TWO BLANK FRAMES ARE GETTING DISPLAYD... CAN ANYONE HELP ME TO SOLVE DS PROBLEM
iconify , deiconify & a process - Java Beginners
iconify , deiconify & a process  While a process is running , a window is iconified, during this process window is maximized & found window blank.. how to solve the problem? please help early
iPhone Input Field, iPhone Input Field Tutorial
{     IBOutlet UITextField *URL;     IBOutlet UITextField *Password;     IBOutlet UITextField
iphone text field example
; IBOutlet UITextField *textField;     IBOutlet UITextField *textField1;     IBOutlet UITextField *textField2;   
trap error - Java Beginners
trap error  Hello. Am trying to trap this error that appears when i post blank fields to database. "[Microsoft][ODBC Microsoft Access Driver] Data... blank fields instead to pop up. how can i do this. please help  Hi friend
Programming: Count Words - Dialog
is any characters separated by exactly blank. This isn't a very good definition..." is any characters separated from others by a blank, "123" is a word, as well... error-prone1 Hints Blank counter. The number of words it the number
 

 

 

DMCA.com