以编程方式添加UIDatePicker ..。我怎么移动它？

Question

遵循食谱食谱，我使用以下方法添加了一个UIDatePicker：

    self.myDatePicker = [[UIDatePicker alloc] init];
    self.myDatePicker.center = self.view.center;
    [self.view addSubview:self.myDatePicker];

    [self.myDatePicker addTarget:self
        action:@selector(datePickerDateChanged:)
        forControlEvents:UIControlEventValueChanged];

    self.myDatePicker.datePickerMode = UIDatePickerModeTime;

所以它是中心，但我需要做些什么来移动它呢？我只想把它移到界面上。

编辑:谢谢，土星！通过使用框架初始化来解决这一问题：

- (void)viewDidLoad
{
  [super viewDidLoad];


  CGRect pickerFrame = CGRectMake(0, 70, 0, 0);

  self.myDatePicker = [[UIDatePicker alloc] initWithFrame:pickerFrame];
  [self.view addSubview:self.myDatePicker];

  [self.myDatePicker addTarget:self
  action:@selector(datePickerDateChanged:)
  forControlEvents:UIControlEventValueChanged];

  self.myDatePicker.datePickerMode = UIDatePickerModeTime;

}

Answer 1

更改其框架或initWithFrame。

self.myDatePicker.frame = CGRectMake(xPosition, yPosition, width, height);

或

self.myDatePicker = [[UIDatePicker alloc] initWithFrame: CGRectMake(xPosition, yPosition, width, height);