UIDatePicker的使用

UIDatePicker控件特别类似与UIPickerView控件。主要用来对日期的选择。

1. UIDatePicker的实例化和基本设置

self.myDatePicker = [[UIDatePicker alloc] init];
    [self.myDatePicker setCenter:self.view.center];
    
    // 通过setDatePickerMode方法，来设置UIDatePicker的样式。
    [self.myDatePicker setDatePickerMode:UIDatePickerModeDate];
    
    // 添加事件
    [self.myDatePicker addTarget:self
                          action:@selector(datePickerDateChanged:)
                forControlEvents:UIControlEventValueChanged];
    
    // 设置可以选择的时间区域
    NSTimeInterval timeInterval=60*60*24*365;
    NSDate *oneYearFromToday = [[NSDate date] dateByAddingTimeInterval:timeInterval];
    NSDate *twoYearsFromToday = [[NSDate date] dateByAddingTimeInterval:2 * timeInterval];
    [self.myDatePicker setMinimumDate:oneYearFromToday];
    [self.myDatePicker setMaximumDate:twoYearsFromToday];

datePickerDateChanged方法：

#pragma mark- UIDatePicker 事件
-(void) datePickerDateChanged:(UIDatePicker *)paramDatePicker{
    if ([paramDatePicker isEqual:self.myDatePicker]){
        NSLog(@"Selected date = %@", paramDatePicker.date);
    }
}

setDatePickerMode方法用来设置UIDatePicker的样式。可用样式为：

typedef NS_ENUM(NSInteger, UIDatePickerMode) {
    UIDatePickerModeTime,              
  UIDatePickerModeDate,           
    UIDatePickerModeDateAndTime,        
UIDatePickerModeCountDownTimer  
};

来自http://blog.sina.com.cn/s/blog_7b9d64af0101bzd9.html