ios - 使用 UIActionSheet 更改 View 时工具栏项目消失

Question

从 UIActionSheet 启动 View 时按钮，通过 navigationBar 后退按钮返回 View 时，工具栏虽然仍然可见，但没有任何以前在其上的按钮。此错误自更新到 iOS 6 后出现，并在模拟器和仅运行 iOS 6 的设备上进行测试时发生。如果我在 UIActionSheet 推送的 View 上注释掉隐藏工具栏的代码返回时添加按钮。

我在 viewWillAppear 中以编程方式制作我的工具栏项并显示 UIActionSheet从我通过 self.navigationController.toolbar 访问的工具栏.

知道是什么导致了这个问题吗？这只是在 iOS 6 出现后才发生的，所以关于 viewWillAppear 是否有任何我需要考虑的变化？ ？

这是从 actionSheet 推送 View 的方式:

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {

    if (actionSheet.tag == 2) {

    if (buttonIndex == 0) {

        [self dismissAllTips];

        self.actionNoteAddView= [[self.storyboard instantiateViewControllerWithIdentifier:@"IDActionNoteAddView"] retain];

        actionNoteAddView.note_id = 0;
        actionNoteAddView.iscompleted=0;

        [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"tool_tips"];

        [self.navigationController pushViewController:actionNoteAddView animated:TRUE];

        [actionNoteAddView release];

    }else if(buttonIndex == 1){

        ...

这些是推送 View 的 View 方法:

-(void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];

    self.navigationItem.hidesBackButton = NO;
    [self.navigationController setToolbarHidden:YES];

    txtcontent.layer.cornerRadius = 10.0f;

}


-(void)viewDidAppear:(BOOL)animated{

    [super viewDidAppear:animated];

}

这些是使用 actionSheet 推送 View 的 View 的 View 方法:

- (void) viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];

    self.navigationItem.hidesBackButton = YES;
    [self.navigationController setToolbarHidden:NO];
    self.navigationController.navigationBarHidden=NO;

    self.navigationController.navigationBar.barStyle = UIBarStyleBlackOpaque;
    self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
    self.navigationController.toolbar.barStyle = UIBarStyleBlackOpaque;
    self.navigationController.toolbar.tintColor = [UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1]; 

    UIImage *actionButtonImage = [UIImage imageNamed:@"31-circle-plus@2x.png"];
    UIBarButtonItem *actionButton = [[UIBarButtonItem alloc] initWithImage:actionButtonImage style:UIBarButtonItemStylePlain target:self action:@selector(actionPressed:)
                                     ];

    UIImage *dashButtonImage = [UIImage imageNamed:@"19-gear.png"];
    UIBarButtonItem *dashButton = [[UIBarButtonItem alloc] initWithImage:dashButtonImage style:UIBarButtonItemStylePlain target:self action:@selector(settingsPressed:)];




    UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                                                                              target:nil
                                                                              action:nil];

    NSArray *toolitems = [NSArray arrayWithObjects:dashButton, flexItem, actionButton, flexItem, nil];

    [self setToolbarItems:toolitems];

    self.title = @"Dashboard";

    defaultProfile.text = [[NSUserDefaults standardUserDefaults] stringForKey:@"default_profile"];

    BOOL dailyProcess = [[NSUserDefaults standardUserDefaults] boolForKey:@"daily_process"];

    if(dailyProcess){

        [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"daily_process"];
        [[NSUserDefaults standardUserDefaults] synchronize];

        loading = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

        labelProcess = [[UILabel alloc]initWithFrame:CGRectMake(60, 105, 240, 30)];
        labelProcess.text = @"Processing...";
        labelProcess.backgroundColor = [UIColor clearColor];
        labelProcess.textColor=[UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
        [labelProcess setFont:[UIFont systemFontOfSize:20]];

        loading.opaque = NO;
        loading.backgroundColor = [UIColor colorWithWhite:0.0f alpha:0.6f];

        indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
        [indicator setHidesWhenStopped:YES];
        indicator.center = self.view.center;

        [self.view addSubview:loading];
        [self.view addSubview:indicator];

        [self.view addSubview:labelProcess];

        [indicator startAnimating];

    }

}


-(void)viewDidAppear:(BOOL)animated{

    [super viewDidAppear:animated];

    CGRect frame = CGRectMake(157, 365, 10, 10);
    UIView *viewToPointAt = [[UIView alloc] initWithFrame:frame];

    [self.view addSubview:viewToPointAt];

    BOOL willies = [[NSUserDefaults standardUserDefaults] boolForKey:@"tool_tips"];

    if(willies==YES){

        if(popTip == nil) {

            popTip = [[[CMPopTipView alloc] initWithMessage:@"Step 1/3: This is the Action Button. You can create, view and auto-fill notes which are then added to your timeline.(Click for step 2)."] autorelease];
            popTip.delegate = self;

            [popTip presentPointingAtView:viewToPointAt inView:self.view animated:YES];
            popTip.backgroundColor = [UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
            popTip.textColor = [UIColor whiteColor];

        }

    }

    [viewToPointAt release];

}

Answer 1

尝试了很多不同的技术并最终通过在一种 View 方法中显示它并在下一种 View 方法中隐藏它来对其进行排序。这是我遇到的最奇怪的错误之一，这很难解决，但我讨厌没有答案的问题。