推送到任何viewController时始终显示tabBarController

Question

我有1个UITabbarController，其中3个ViewControllers属于其命名的aVC-bVC-cVC（VC = ViewController）。然后我有1个MenuSideBar有其他3个ViewControllers名为dVC-eVC-fVC。

我想要的只是当我推送到dVC或eVC或fVC我的UITabbarController总是显示。我怎么能这样做？我真的卡在这一点上。我必须尝试很多方法甚至自己定制tabbarController但仍然无法正常工作。

请帮帮我。我真的需要这方面的帮助。

非常感谢你。

Answer 1

我已经使用 SWRevealViewController 在目标C 中为您制作了示例演示，因为您在问题中标记了该示例。我使用了 XCode 7.1.1 版本。请务必在 7.x 版本的XCode中打开此演示。这个问题也可以通过 MFSideMenu 等其他侧面菜单库来解决

以下是我根据您的要求制作的演示样本的链接 https://github.com/RajanMaheshwari/TabBarControllerApp

<强>说明

为了始终在应用中保留标签栏，您必须在每个控制器上添加一个TabBar，而不是UITabBarController添加的viewController。在我的示例演示中，我采用了各种控制器

1。 LeftSideViewController - 这将是整个应用的左侧面板。

2。 MainTabBarViewController - 这将是UITabBarController子类，它将连接到另外两个视图控制器，它们将成为MainTabBarViewController的一部分。
----的一个。 TabFirstViewController
----的湾 TabSecondViewController

3。 FirstViewController - 将来自 LeftSideViewController＆＃39; 表格视图，并添加了自己的UITabBar点。

4。 SecondViewController - 将来自 LeftSideViewController＆＃39; 表格视图，并添加了自己的UITabBar点。

导入 SWRevealViewController 文件夹 在AppDelegate的didFinishLaunchingWithOptions方法中，我们需要将根视图控制器设置为 MainTabBarViewController 。

<强> AppDelegate.h

#import <UIKit/UIKit.h>
#import "SWRevealViewController.h"

@interface AppDelegate : UIResponder<UIApplicationDelegate,SWRevealViewControllerDelegate>

@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) SWRevealViewController *viewController;

@end

<强> AppDelegate.m

#import "AppDelegate.h"
#import "LeftSideViewController.h"
#import "SWRevealViewController.h"
#import "MainTabBarViewController.h"
#import "FirstViewController.h"
#import "SecondViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate
@synthesize window = _window;
@synthesize viewController = _viewController;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

   //Here Adding some notification observers which will be fired whenvever a tabbar index in clicked of the viewcontrollers whose parent is not UITabBarController class and the left side menu ones too.
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(backToTabIndexControllerFirst) name:@"backToTabIndexControllerFirst" object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(backToTabIndexControllerSecond) name:@"backToTabIndexControllerSecond" object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(firstVCWithoutNAV) name:@"firstVCWithoutNAV" object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(secondVCWithoutNAV) name:@"secondVCWithoutNAV" object:nil];

    UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window = window;
        UIStoryboard* storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        LeftSideViewController *leftSideController = [storyBoard instantiateViewControllerWithIdentifier:@"LeftSideViewController"];
        MainTabBarViewController *mainTabBarController = [storyBoard instantiateViewControllerWithIdentifier:@"MainTabBarViewController"];
        SWRevealViewController *mainRevealController =  [[SWRevealViewController alloc]
                                                    initWithRearViewController:leftSideController frontViewController:mainTabBarController];

    mainRevealController.delegate = self;
    self.viewController = mainRevealController;
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];

    return YES;
}

方法添加所有观察者的定义

<强> AppDelegate.m

-(void)firstVCWithoutNAV{

    self.window.rootViewController = nil;
    UIStoryboard * storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UINavigationController * firstVC = [storyBoard instantiateViewControllerWithIdentifier:@"FirstNAV"];
    LeftSideViewController *leftSideController = [storyBoard instantiateViewControllerWithIdentifier:@"LeftSideViewController"];
    SWRevealViewController *mainRevealController = [[SWRevealViewController alloc]
                                                    initWithRearViewController:leftSideController frontViewController:firstVC];

    mainRevealController.delegate = self;

    self.viewController = mainRevealController;

    self.window.rootViewController = self.viewController;
}

-(void)secondVCWithoutNAV{

    self.window.rootViewController = nil;
    UIStoryboard * storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UINavigationController * secondVC = [storyBoard instantiateViewControllerWithIdentifier:@"SecondNAV"];
    LeftSideViewController *leftSideController = [storyBoard instantiateViewControllerWithIdentifier:@"LeftSideViewController"];
    SWRevealViewController *mainRevealController = [[SWRevealViewController alloc]
                                                    initWithRearViewController:leftSideController frontViewController:secondVC];

    mainRevealController.delegate = self;

    self.viewController = mainRevealController;

    self.window.rootViewController = self.viewController;

}

-(void)backToTabIndexControllerFirst{
    UIStoryboard* storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

    LeftSideViewController *leftSideController = [storyBoard instantiateViewControllerWithIdentifier:@"LeftSideViewController"];


    MainTabBarViewController *mainTabBarController = [storyBoard instantiateViewControllerWithIdentifier:@"MainTabBarViewController"];

    SWRevealViewController *mainRevealController = [[SWRevealViewController alloc]
                                                    initWithRearViewController:leftSideController frontViewController:mainTabBarController];

    mainRevealController.delegate = self;

    self.viewController = mainRevealController;

    self.window.rootViewController = self.viewController;
}

-(void)backToTabIndexControllerSecond{

    UIStoryboard* storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

    LeftSideViewController *leftSideController = [storyBoard instantiateViewControllerWithIdentifier:@"LeftSideViewController"];


    MainTabBarViewController *mainTabBarController = [storyBoard instantiateViewControllerWithIdentifier:@"MainTabBarViewController"];

    //To make selected index as the one which is clicked from tab bar
    mainTabBarController.selectedIndex = 1;
    SWRevealViewController *mainRevealController = [[SWRevealViewController alloc]
                                                    initWithRearViewController:leftSideController frontViewController:mainTabBarController];

    mainRevealController.delegate = self;

    self.viewController = mainRevealController;

    self.window.rootViewController = self.viewController;
}

在没有 UITabBarController 父类的控制器中，我们将添加一个tabBar并将tabBar的委托设置为 self 并添加tabBar＆＃39; s didSelectItem委托方法。

<强> FirstViewController.h

#import <UIKit/UIKit.h>

@interface FirstViewController : UIViewController<UITabBarDelegate>
@property (weak, nonatomic) IBOutlet UITabBar *tabBar;

@end

<强> FirstViewController.m

#import "FirstViewController.h"
#import "SWRevealViewController.h"
@interface FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    SWRevealViewController *revealController = [self revealViewController];

    [self.view addGestureRecognizer:revealController.panGestureRecognizer];


    UIBarButtonItem* revealButtonItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"reveal-icon.png"] style:UIBarButtonItemStylePlain target:revealController action:@selector(revealToggle:)];

    self.navigationItem.leftBarButtonItem = revealButtonItem;

    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item{
    NSUInteger indexOfTab = [[tabBar items] indexOfObject:item];
    NSLog(@"Tab index = %u", (int)indexOfTab);

    if(indexOfTab == 0){
        [[NSNotificationCenter defaultCenter] postNotificationName:@"backToTabIndexControllerFirst" object:nil];
    }else{
        [[NSNotificationCenter defaultCenter] postNotificationName:@"backToTabIndexControllerSecond" object:nil];
    }
}

从此处触发的通知将更改应用程序的根控制器。

同样，我们将编码 SecondViewController

假设有一个表用于从LeftSidePanel中选择各种其他控制器，我们将添加tableView的didSelectRowAtIndexPath方法，如下所示：

<强> LeftSideViewController.m

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    SWRevealViewController *revealController = self.revealViewController;
    [revealController revealToggleAnimated:YES];

    // Used this just to show the animation completion and then changing the root
    [self performSelector:@selector(changeControllers:) withObject:indexPath afterDelay:0.3];

}

-(void)changeControllers:(NSIndexPath*)indexPath{

    if(indexPath.row == 0){
        [[NSNotificationCenter defaultCenter] postNotificationName:@"firstVCWithoutNAV" object:nil];
    }else{
        [[NSNotificationCenter defaultCenter] postNotificationName:@"secondVCWithoutNAV" object:nil];
    }
}

我们也可以使用其他库，就像我已经为侧面板所说的那样。例如
https://github.com/mikefrederick/MFSideMenu

希望这能解决问题！