Question

我正在使用UIDate选择器并且正常使用它。我使用它只是为了让时间不是约会。我在标签上得到的时间，但当我将此时间字符串转换为NSDate类型时，它显示我错误的输出。显示的输出如下。 1999-12-31 23:30:00 但应该是06:45 PM。任何人都可以找到我的错误。

我使用的代码如下。

- (void)showPicker:(NSDate *)date
{
    actionsheet = [[UIActionSheet alloc] initWithTitle:@"Select the Time" delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"DONE" otherButtonTitles:Nil, nil];
    pickdate = [[UIDatePicker alloc] initWithFrame:[actionsheet bounds]];
    pickdate.hidden = NO;
    pickdate.datePickerMode = UIDatePickerModeTime;
    pickdate.timeZone = [NSTimeZone localTimeZone];
    [pickdate addTarget:self action:@selector(changeDateInLabel:) forControlEvents:UIControlEventValueChanged];
    [actionsheet addSubview:pickdate];
    [actionsheet showInView:self.view];
    [actionsheet setBounds:CGRectMake(0,0,320, 500)];
    CGRect pickerRect = pickdate.bounds;
    pickerRect.origin.y = -90;
    pickdate.bounds = pickerRect;
    [pickdate setDate:date animated: YES];
 }

 - (IBAction)changeDateInLabel:(id)sender
{
    NSLog(@"I Am Changing the values");
    df = [[NSDateFormatter alloc] init];
    [df setFormatterBehavior:NSDateFormatterBehaviorDefault];
    [df setDateFormat:@"hh:mm a"];
    timelbl.text = [NSString stringWithFormat:@"%@",[df stringFromDate:pickdate.date]];
   NSLog(@"Picker MOde IS %@",df );
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
  if (toggleswitch.on)
        {
            NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
            [dateFormatter setFormatterBehavior:NSDateFormatterBehaviorDefault];
            [dateFormatter setDateFormat:@"hh:mm a"]; // depends on 12(hh) or 24(HH)

            yourDate = [dateFormatter dateFromString:timelbl.text];

            [self showPicker:yourDate];
            NSLog(@"YOUR DATE: %@", yourDate);
        }
}

Answer 1

NSDate *date=[[NSDate alloc]init];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"yyyy-MM-dd"];

NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init];
[timeFormat setDateFormat:@"HH:mm:ss"];
NSString *theDate = [dateFormat stringFromDate:date];
NSString *theTime = [timeFormat stringFromDate:date];

NSLog(@"%@:%@",theDate,theTime);

日期选择器的问题

1 个答案: