#import "ViewController.h"
@interface ViewController () <UITextFieldDelegate>
@property (weak, nonatomic) IBOutlet UITextField *textField;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 開始編輯
[self.textField addTarget:self action:@selector(tfBeginEditing) forControlEvents: UIControlEventEditingDidBegin];
// 結(jié)束編輯
[self.textField addTarget:self action:@selector(tfEndEditing) forControlEvents: UIControlEventEditingDidEnd];
// 正在編輯
[self.textField addTarget:self action:@selector(tfEditingChange:) forControlEvents:UIControlEventEditingChanged];
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
// 退出鍵盤
[self.view endEditing:YES];
}
#pragma mark - 監(jiān)聽textField的事件
- (void)tfBeginEditing
{
NSLog(@"開始編輯");
}
- (void)tfEndEditing
{
NSLog(@"結(jié)束編輯");
}
- (void)tfEditingChange:(UITextField *)tf
{
NSLog(@"tfEditingChange--%@",tf.text);
}
@end
#import "ViewController.h"
@interface ViewController () <UITextFieldDelegate>
@property (weak, nonatomic) IBOutlet UITextField *textField;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.textField.delegate = self;
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
// 退出鍵盤
[self.view endEditing:YES];
}
#pragma mark - UITextFieldDelegate
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
NSLog(@"開始編輯");
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
NSLog(@"結(jié)束編輯");
}
/**
* 當(dāng)textField文字發(fā)生改變就會調(diào)用這個方法
* @param string 用戶輸入的文字
*
* @return YES:允許用戶輸入;NO:禁止用戶輸入
*/
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSLog(@"shouldChangeCharactersInRange--%@",string);
if([string isEqualToString:@"1"]) {
return NO;
}
return YES;
}
@end
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