IOS-SegmentedControl（添加到Nav上）的简单使用方法

/* 初始化导航按钮 */

{

credits = [ [ [ UIBarButtonItem alloc ]

initWithTitle:@"Credits"

style: UIBarButtonItemStylePlain

target: appDelegate

action:@selector(credits) ]

autorelease ];

self.navigationItem.rightBarButtonItem = credits;

segmentedControl = [ [ UISegmentedControl
alloc ] initWithItems: nil ];

segmentedControl.segmentedControlStyle =
UISegmentedControlStyleBar;

[ segmentedControl insertSegmentWithTitle:
@"Bunnies" atIndex: 0

animated: NO

];

[ segmentedControl insertSegmentWithTitle:
@"Ponies" atIndex: 1

animated: NO

];

[ segmentedControl addTarget: self action:
@selector(controlPressed:)

forControlEvents:UIControlEventValueChanged

];

self.navigationItem.titleView = segmentedControl;

segmentedControl.selectedSegmentIndex = 0;

}

return self;

}

- (void)controlPressed:(id) sender {

[ self setPage ];

}

- (void)setPage {

int index = segmentedControl.selectedSegmentIndex;

if (index == 0) {

textView.text = @"OMG Bunnies!";

} else {

textView.text = @"OMG Ponies";

}

}