如何更改 uipickerview 横向？

Question

我在这里开发应用程序。我无法在横向模式下更改pickerview。这是我的代码。

  -(IBAction) showPicker:(UIControl *)sender
   {
UIActionSheet *menu = [[UIActionSheet alloc] initWithTitle:@""
                                                  delegate:self
                                         cancelButtonTitle:@"Done"
                                    destructiveButtonTitle:nil
                                         otherButtonTitles:nil];
menu.tag=1;

UIPickerView *pickerView;
if (self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
    self.interfaceOrientation == UIInterfaceOrientationLandscapeRight)
{      

    pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(-80,70,220,0)];
    pickerView.delegate = self;
    pickerView.dataSource = self;
    pickerView.showsSelectionIndicator = YES;    

    [menu addSubview:pickerView];

    [menu showInView:self.view.superview];

    [menu setBounds:CGRectMake(0,0,320, 470)];

    [pickerView release]; 
    [menu release]; 

    NSLog(@"Landscape");
}
else 
{
    NSLog(@"Portrait");
    pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0,70,220,0)];
    pickerView.delegate = self;
    pickerView.dataSource = self;
    pickerView.showsSelectionIndicator = YES;    

    [menu addSubview:pickerView];

    [menu showInView:self.view.superview];

    [menu setBounds:CGRectMake(0,0,320, 470)];

    [pickerView release]; 
    [menu release]; 

}
 }


 - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component 
{
return [arrayNo count];

}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
[entered2 resignFirstResponder];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
entered2.text=[arrayNo objectAtIndex:row];
[entered2 resignFirstResponder];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component 
{
return [arrayNo objectAtIndex:row];
}
 - (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component     
{
int sectionWidth = 300;
return sectionWidth;
}

在我的应用程序中，我创建的肖像模式运行良好。但是当我尝试在横向模式下编写代码时，它可能会错误定位。我怎样才能做到这一点。 我如何更改横向模式。任何人都可以帮助我。提前致谢。

Answer 1

您只需设置尺寸检查器属性，如下所示：

PS 编辑 1：您必须在

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{
return YES;
 }

编辑2：

中返回yes：如果您这样做，则不需要检查方向的条件并为其制作框架。