uiview不旋转

我在uiviewcontroller中有以下代码

Notepad *notepad = [[Notepad alloc] initForNewTopLevelTask:0 andDAO:self.dao];

[self.navigationController pushViewController:notepad animated:YES];
[notepad release];

initfornewtopleveltask:和dao:方法是:

- (id) initForNewTopLevelTask:(int) theTableSize andDAO:(DAO*) aDAO {
    self.dao = aDAO;
    tableSize = [[NSNumber alloc] initWithInt:theTableSize];
    self.isNew = [NSNumber numberWithBool:YES];
    self.isSubtask =[NSNumber numberWithBool:NO];
        return self;
}

当我旋转视图时,没有发生任何事情,它不会旋转。如果我将uiviewcontroller行更改为:

Notepad *notepad = [[Notepad alloc] init];

它旋转得很好!

该视图不是选项卡控制器的一部分,我已经实现了:

// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return YES;
}