IOSテキストボックス事件ーー委託方式の実現

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.textField.delegate = self; //         ，      ，       
    
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark--------------UITextFieldDelegate method

- (BOOL) textFieldShouldBeginEditing:(UITextField*) textField
{
    NSLog(@"      .............
");
    return YES;
}

- (void) textFieldDidBeginEditing:(UITextField *) textField
{
    NSLog(@"        .............
");
}

- (BOOL) textFieldShouldEndEditing:(UITextField *) textField
{
    NSLog(@"        .............
");
    return YES;
}

- (void) textFieldDidEndEditing:(UITextField *) textField
{
    NSString *text = [textField text];
    NSLog(@"      .............%@
",text);
  
}

- (BOOL) textFieldShouldReturn:(UITextField *) textField
{
    NSLog(@"call textFieldShouldReturn.............
");
    [textField resignFirstResponder];
    return YES;
}

@end