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//设置通知 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector (textFieldChange:) name:UITextFieldTextDidChangeNotification object:_commentTextField]; //实现通知方法 - (void) textFieldChange:(NSNotification *)notification{ UITextField *textField=[notification object]; } /*****************************************************************************/ _textField = [[UITextField alloc]initWithFrame:CGRectMake(5, 10, SCREEN_WIDTH-10, 40)]; [_textField addTarget:self action:@selector(textFieldDidChangee:) forControlEvents:UIControlEventEditingChanged]; //点击方法 - (void)textFieldDidChangee:(UITextField *)textField { NSLog(@"333%@",textField); }