iphone - 在 xcode 4.2 中声明自定义 UINavigationController

Question

我想知道如何在 Xcode 4.2 中声明自定义 UINavigationController ？我创建了一个使用 API 的项目并且需要 UINavigationController 我的项目不使用 Storyboard并且是基于 View 的应用程序。谢谢

Answer 1

我自己写的。关键是子类化 UIViewController 并记住将 self.title 和图标设置为它的第一个“包含”类，否则 tabBarIcons 上不会显示任何内容。 UINavigationController 仅比 UIViewController 深一层，因此您可以查看 header 并轻松了解它实现的内容，但这些是唯一需要“复制”的真正键。

在 Interface Builder 中，假设您有一个 nib 与之配套，创建一个与屏幕大小相同的主视图(如果您有 tabBar 和状态栏，则为 311)，然后创建一个IB 输出为导航栏的顶 View ，以及作为容器输出的下 View 。然后做这样的事情:

注意:我搞砸了中心点，因为我遇到了很多关于尝试移动 View 而不让它们偏移像素高度的问题，即使我知道 subview 的相对定位，它只是不起作用一些原因，即使只是横向移动

我发布这段代码是因为似乎没有人拥有这种类型的东西。这可能对某人或更多人有所帮助。斯蒂芬·约翰逊。

导入“CustomNavigationController.h”

@implementation CustomNavigationController

@synthesize backgroundImg, title1, title2, title3;


- (id) initWithRootViewController:(UIViewController*)c;
{
    
    self = [super initWithNibName:nil bundle:nil];
    if (self) {
  

        containedControllers = [[NSMutableArray alloc] initWithObjects:c, nil];
        self.title1.text = c.title; //a custom outlet for text of title, resembling the NavigationController's title basically

        [container addSubview:c.view];
        c.view.frame = container.bounds;
        back.hidden = YES; //backbutton
        c.customNavigationController = self;
        self.title = c.title;
        self.tabBarItem.image = c.tabBarItem.image;
    }
    return self;
}

- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
    
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (void) dealloc;
{
    [containedControllers removeAllObjects];
    [containedControllers release];
    [super dealloc];
}

- (void) pushViewController:(UIViewController*)v animated:(BOOL)a;
{
    float w = container.frame.size.width;
    float h = container.frame.size.height;
    [containedControllers addObject:v];
    [self.view addSubview:v.view];
   // v.view.frame = CGRectMake(w,0,w,h);
    v.view.frame = container.bounds;
    v.view.center = CGPointMake(v.view.center.x + w, v.view.center.y + container.frame.origin.y);
    v.customNavigationController = self;
    
    float time = a ? 0.31 : 0;
    
    UIViewController * lastViewController = nil;
    lastViewController = (UIViewController*)[containedControllers lastObject];
    
    [UIView animateWithDuration:time animations:^{ 
        for (UIViewController * c in containedControllers) {
            // c.view.frame = CGRectMake(c.view.frame.origin.x + w*direction, 0, w, h); 
            c.view.center = CGPointMake(c.view.center.x + w*-1, c.view.center.y);
        }
    } completion:^(BOOL finished) {
       
        self.title1.text = v.title;
        back.hidden = NO;        
    }];
}

- (void) popViewControllerAnimated:(BOOL)a;
{
    float w = container.frame.size.width;
    float h = container.frame.size.height;
    float time = a ? 0.31 : 0;
    
    float direction = 1;
    
    [UIView animateWithDuration:time animations:^{ 
        for (UIViewController * c in containedControllers) {
            // c.view.frame = CGRectMake(c.view.frame.origin.x + w*direction, 0, w, h); 
            c.view.center = CGPointMake(c.view.center.x + w*direction, c.view.center.y);
        }
    } completion:^(BOOL finished) {
            // lastViewController = (UIViewController*)[containedControllers lastObject];
            [containedControllers removeLastObject];
        self.title1.text = ((UIViewController*)[containedControllers lastObject]).title;
        if ([containedControllers count] > 1) {
            back.hidden = NO;
        }
        else 
            back.hidden = YES;
        
    }];
}

- (IBAction) popLastVC;
{
    [self popViewControllerAnimated:YES];
}
@end