NavigationBar 可用以下方法替換 Back 返回鍵( 位於導覽列的左邊 ) :

//*.m

-(void)viewDidLoad{

MyViewController *myViewController = [[MyViewController alloc] init];

//製作 MyViewController 導覽列的左按鈕 :: 並設定按鈕動作為回主畫面

UIBarButtonItem *leftBarButton = [[UIBarButtonItem alloc]

initWithImage:[UIImage imageNamed:@"item-back.png"]

style:UIBarButtonItemStyleBordered

target:self

action:@selector(goRootHome)];

//設定目標 View 的 NavigationBar 左按鈕

myViewController.navigationItem.leftBarButtonItem = leftBarButton;

[leftBarButton release];

[super viewDidLoad];

}

-(void)goRootHome{

//回到當前導覽順序的最根本 View

[self.navigationController popToRootViewControllerAnimated:YES];

}