import“CustomNavigationController.h”

Question

我想知道如何在UINavigationController中声明自定义Xcode 4.2？我创建了一个使用API的项目，需要UINavigationController我的项目不使用故事板，而且是viewBased应用程序。谢谢

Answer 1

我写了自己的。关键是子类UIViewController并记住将self.title和图标设置为其第一个“包含”类，否则将不会显示在tabBarIcons上。 UINavigationController距离UIViewController只有一层，因此您可以查看标题并轻松查看其实现的内容，但这些是“复制”的唯一真正关键。

在Interface Builder中，假设您有一个笔尖，请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），然后创建一个顶视图，即IB -outletted是导航栏，以及作为容器出口的下部视图。然后做这样的事情：

注意：我弄乱了中心点，因为我遇到了许多关于尝试移动视图而没有像素高度偏移的问题，即使我知道子视图的相对位置，它只是没有“工作”某种原因，即使只是侧身移动

我发布此代码是因为没有人似乎有这种类型的东西了。这可能会帮助某人或更多。斯蒂芬约翰逊。

import“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

Answer 2

通过继承对UINavigationController进行子类化非常简单。这是OOP的一个关键概念。

//YourClass.h
@interface YourClass : UINavigationController

@end
//YourClass.m
@implementation YourClass

@end

但是

此类通常按原样使用，但可以在iOS 6及更高版本中进行子类化。

如UINavigationController概述中所述。因此，如果您支持iOS 5或更早版本，则可能无法继承UINavigationController。也许您的子类无法正常工作。您可以对此stackoverflow topic找到一个很好的讨论。

在xcode 4.2中声明自定义UINavigationController

2 个答案:

import“CustomNavigationController.h”