如何从 UIDatepicker 获取数值？

Question

我正在开发一个应用程序，它涉及从日期选择器获取一个值，并从实际 iPhone 上显示的日期中减去它。我该怎么做？我到处寻找答案！

谢谢拉菲

Answer 1

您应该实现 datePickerValueChanged 作为选择器，并像这样实现。

- (void)datePickerValueChanged:(UIDatePicker*) date_Picker{


NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
NSString *dateFromPicker = [NSString stringWithFormat:@"%@",[df stringFromDate:date_Picker.date]];

    // calculating time difference now

    NSDate *timeRightNow = [NSDate date];
    NSTimeInterval diff = [timeRightNow timeIntervalSinceDate:date_Picker.date];

    // The difference should always be in seconds. Here, 3628800 represents 6 weeks.

    if (diff > 3628800){

      // Do something if the entered date is six weeks from the iPhone date.

   }


 }