UITextField Delegate 无法获取中文字符

From:http://www.cnblogs.com/mew7wo/archive/2011/10/12/2209019.html

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UITextField delegate 有几个方法可以获取text

一般就用这两个

- (void)viewDidLoad
{
    [_textField addTarget:self action:@selector(textFieldEditChanged:) forControlEvents:UIControlEventEditingChanged];

    [super viewDidLoad];
}

- (void)textFieldEditChanged:(UITextField *)textField
{
    NSLog(@"textField text : %@", [textField text]);
}

这样，无论是字母还是中文，都能动态获取