我已经设置了两个 barbutton 项目,一个在右侧,一个在左侧。右边的一个在两个视图之间成功切换,右边的第二个是一个分段控件,应该在两个视图之间切换。这是我的代码,我想知道如何使用分段控件实现更改视图。
- (void)setupNavigationBar {
UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44.0f)];
UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:@"ContainerView"];
navItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFastForward target:self action:@selector(switchViewControllers)];
navBar.items = [NSArray arrayWithObject:navItem];
segmented = [[UISegmentedControl alloc] initWithItems:
[NSArray arrayWithObjects:
[UIImage imageNamed:@"seg1.png"],
[UIImage imageNamed:@"seg1.png"],
nil]];
segmented.frame = CGRectMake(0, 0, 50, 30);
segmented.segmentedControlStyle = UISegmentedControlStyleBar;
UIBarButtonItem * segmentedBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmented];
navItem.leftBarButtonItem = segmentedBarItem;
[self.view addSubview:navBar];
}
- (void)viewDidLoad {
[super viewDidLoad];
// This is just for the purpose of calling the switch method.
[self setupNavigationBar];
CGRect rect = CGRectMake(0, 44, 320, 436);
currentViewController = [[FirstViewController alloc] init];
currentViewController.view.frame = rect;
nextViewController = [[SecondViewController alloc] init];
nextViewController.view.frame = rect;
[self addChildViewController:currentViewController];
[self addChildViewController:nextViewController];
[self.view addSubview:currentViewController.view];
}
- (void)switchViewControllers {
[self transitionFromViewController:currentViewController toViewController:nextViewController duration:3.0 options:UIViewAnimationTransitionFlipFromRight | UIViewAnimationOptionCurveEaseInOut animations:nil completion:^(BOOL finished) {
UIViewController *tempViewController = currentViewController;
currentViewController = nextViewController;
nextViewController = tempViewController;
tempViewController = nil;
}];
}
我将如何实现分段控件来更改视图?