IOS UITextField

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self addTextField];

   }

-(void)addTextField{

    // This allocates a label

    UILabel *prefixLabel = [[UILabel alloc]initWithFrame:CGRectZero];

    //This sets the label text

    prefixLabel.text [email protected]"## ";

    // This sets the font for the label

    [prefixLabel setFont:[UIFont boldSystemFontOfSize:14]];

    // This fits the frame to size of the text

    [prefixLabel sizeToFit];

    // This allocates the textfield and sets its frame

    UITextField *textField = [[UITextField  alloc] initWithFrame:

                              CGRectMake(20, 50, 280, 30)];

    // This sets the border style of the text field

    textField.borderStyle = UITextBorderStyleRoundedRect;

    textField.contentVerticalAlignment =

    UIControlContentVerticalAlignmentCenter;

    [textField setFont:[UIFont boldSystemFontOfSize:12]];

    //Placeholder text is displayed when no text is typed

    textField.placeholder = @"Simple Text field";

    //Prefix label is set as left view and the text starts after that

    textField.leftView = prefixLabel;

    //It set when the left prefixLabel to be displayed

    textField.leftViewMode = UITextFieldViewModeAlways;

    // Adds the textField to the view.

    [self.view addSubview:textField];

    // sets the delegate to the current class

    textField.delegate = self;

}

// pragma mark is used for easy access of code in Xcode

#pragma mark - TextField Delegates

// This method is called once we click inside the textField

-(void)textFieldDidBeginEditing:(UITextField *)textField{

    NSLog(@"Text field did begin editing");

}

// This method is called once we complete editing

-(void)textFieldDidEndEditing:(UITextField *)textField{

    NSLog(@"Text field ended editing");

}

// This method enables or disables the processing of return key

-(BOOL) textFieldShouldReturn:(UITextField *)textField{

    [textField resignFirstResponder];

    return YES;

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end