UITabBar 更多按钮导航问题

Question

在我的应用程序中，我几乎有 10 个选项卡项，最终在选项卡栏上添加了一个更多按钮。当我选择更多按钮时，它会将其他标签栏内容列为列表。我选择其中一个并在里面导航（这有一个导航控制器）并单击一个项目。同样，如果我单击上一页加载的更多按钮并加载更多选项卡项，我必须单击几次，因为它会弹出 UI 控制器。因此，每次用户单击更多项目时，我都需要加载标签栏列表。请帮我弄清楚该怎么做。

谢谢

Answer 1

也许您应该考虑重构您的应用。你真的需要 10 个平行的信息/功能领域吗？！

Answer 2

您可以在 More 选项卡中视图控制器的 ViewWillDisappear 方法中执行此操作，调用该方法将视图从 MoreViewNavigationController 中弹出，如下所示：

[super viewWillDisappear:animated];

[self.navigationController popViewControllerAnimated:NO];

这是answer

Answer 3

如果您需要在 bar 按钮项上有很多按钮并且它们不适合它。

//  MasterViewController.h
        .
        .
        .

        - (IBAction)btMy:(id)sender;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *btMy;


        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt1;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt2;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt3;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt4;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt5;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt6;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt7;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *bt8;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl1;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl2;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl3;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl4;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl5;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl6;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl7;
        @property (weak, nonatomic) IBOutlet UIBarButtonItem *fl8;
        @end

        //  MasterViewController.m
        .
        .
        .
    @interface MasterViewController ()
    { 
        BOOL tt;
    }
    .
    .
    .
       - (IBAction)btMy:(id)sender {
        [self nextToolBar];

    } 

        -(void) nextToolBar {
         if (tt ) {
                self.navigationController.toolbar.items = [NSArray arrayWithObjects:_bt1, _fl1, _bt2, _fl1, _bt3, _fl1, _bt4, _fl1, _btMy, nil];
                tt = NO;
            }else{
                self.navigationController.toolbar.items = [NSArray arrayWithObjects:  _bt5, _fl1, _bt6,_fl1,_bt7,_fl1, _bt8, _fl1, _btMy, nil];
                tt = YES;
                 }

            for ( NSInteger x = 0; x < 8; x++){ // если при перевороте цвет меняли на прозрачный, востанавливаем обратно

                [self.navigationController.toolbar.items[x] setTintColor:_btMy.tintColor];
            }

        }

        -(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{ // после смены орентации устройства
           [self nextToolBar]; // показываем кнопки 4+1 иначе отображается все кнопки 8+1 шт

        }

        -(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)orientation duration:(NSTimeInterval)duration{ // до смены арентауции устройства
            NSArray *myArray = [NSArray arrayWithObjects:_bt1, _bt2, _bt3, _bt4, _bt5, _bt6, _bt7, _bt8, nil]; // перед переворотом экрана меняем цвет на прозрачный
            for ( NSInteger x = 0; x < 8; x++){

                [myArray[x] setTintColor:[UIColor clearColor]];  //  
                 }
            if (tt) {tt=NO;} else {tt=YES;}   // чтобы вернуться на тот же набор кнопок
        }