Question

嘿朋友我在实施自定义授权方面遇到问题让我解释一下......

1 - 我有一个pickerview，我已经制作了一个Custom类的pickerView来显示MM / YYYY。

2 - 我在Viewcontroller中有一个Button，我想要的是在pickerView的didselect上更改按钮标题。我实现它就像这样......

在UImonthPickerClass中，我正在实现这样的..

@protocol UIMonthYearPickerDelegate <NSObject>

-(void)pickerView:(UIPickerView *)pickerView didChangeDate:(NSDate*)newDate;

@end

@interface CustomMonthYearPicker : UIPickerView <UIPickerViewDelegate, UIPickerViewDataSource>

@property (nonatomic, weak) id <UIMonthYearPickerDelegate> declareDelegate;

在didSelect中，我这样做......

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {

if (self.declareDelegate) {

    if ([self.declareDelegate respondsToSelector:@selector(pickerView:didChangeDate:)]) {

        [self.declareDelegate pickerView:self didChangeDate:self.date];
    }
}

}

在ViewController中我有按钮，我这样做......

@interface AddDetailsViewController ()<UITextFieldDelegate,UIMonthYearPickerDelegate> {

@property (strong, nonatomic) IBOutlet CustomMonthYearPicker *customMonthYear;

}

 - (void)viewDidLoad{

[super viewDidLoad];

[customMonthYear setDeclareDelegate:self];

}

#pragma CustomMonthYearProtocol 

- (void)pickerView:(UIPickerView *)pickerView didChangeDate:(NSDate *)newDate {

 NSString *buttonStr = [NSString stringWithFormat:@"%@",newDate];

[self.btnSelectYear setTitle:buttonStr forState:UIControlStateNormal];

}

但它没有更新didselect上的Button Title ....为什么...... ??请帮助

自定义委派不在目标c中调用其委托方法

0 个答案: