如何把SegmentedControl加到Navigation中间(用代码)
我在网上找到的是加到左按钮和右按钮上，代码如下：
UISegmentedControl *segmentedControl=[[UISegmentedControl alloc] initWithFrame:CGRectMake(80.0f, 8.0f, 150.0f, 30.0f) ];
[segmentedControl insertSegmentWithTitle:@"One" atIndex:0 animated:YES];
[segmentedControl insertSegmentWithTitle:@"Two" atIndex:1 animated:YES];
[segmentedControl insertSegmentWithTitle:@"Three" atIndex:2 animated:YES];
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.momentary = YES;
segmentedControl.multipleTouchEnabled=NO;
[segmentedControl addTarget:self action:@selector(SelectSeg) forControlEvents:UIControlEventValueChanged];
UIBarButtonItem *segButton = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
self.seg=segmentedControl;
self.seg.selectedSegmentIndex=0;
[segmentedControl release];
self.navigationItem.rightBarButtonItem = segButton;
[segButton release];
可是现在的情况是左按钮是做为返回按钮，右按钮也有别的用处，所以要把这个SegmentControl放在navigation中间，请问要怎么写
[解决办法]
1 UINavigationbar不是有一个属性是titleView，titleView是位置中间的；
2 而UISegmentedControl是基于UIView的；
3 这样的话，你懂的。。
