如何在选择某个selectedSegmentIndex时设置NSString值？

Question

我有一个分段控件，当触摸日志时，选择了selectedSegmentIndex。但是，它为null

输出self.sessoField.text;

任何想法如何解决这个问题？

感谢

这是以下控制台输出：

2013-10-24 11:00:11.131 [3628:60b] gender is (null) 1
2013-10-24 11:00:40.179 [3628:60b] gender is (null) 0
2013-10-24 11:00:41.546 [3628:60b] gender is (null) 1

- (IBAction)genderSelectButton:(id)sender {

    if (self.segmentedControlGender.selectedSegmentIndex == 0) {
        self.sessoField.text = @"m";
        NSLog(@"gender is %@ %d",self.sessoField.text,self.segmentedControlGender.selectedSegmentIndex);

    } else if(self.segmentedControlGender.selectedSegmentIndex == 1) {
        self.sessoField.text = @"f";
        NSLog(@"gender is %@ %d",self.sessoField.text,self.segmentedControlGender.selectedSegmentIndex);

    }
}

sessoField已在.h中声明为：

@property (nonatomic, weak) IBOutlet UITextField * sessoField;

Answer 1

首先检查你的textfield是不是nil然后尝试这样： -

NSLog(@"gender is %@ %d",self.sessoField.text,self.segmentedControlGender.selectedSegmentIndex);

Answer 2

@property (nonatomic, weak) IBOutlet UITextField * sessoField;

should be 

@property (nonatomic, strong) IBOutlet UITextField * sessoField;