Question

我在第一次打开应用时使用WSCoachMarksView给我的用户一个演练，我显然只希望第一次运行，之后再也不会。我按照文档中的说明进行操作，该文档告诉您将{I}中的相应代码放在viewDidAppear中，以便它只运行一次，但它似乎无法正常工作。

每次应用程序打开时，它仍会贯穿整个演练。有没有什么我没有正确检测以前运行的应用程序并设置BOOL以便它不会再次运行？

SearchViewController.m：

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Setup coach marks
    NSArray *coachMarks = @[
                            @{
                                @"rect": [NSValue valueWithCGRect:(CGRect){{50,168},{220,45}}],
                                @"caption": @"Just browsing? We'll only notify you periodically of new matches. Need it soon? We'll notify you more frequently, and match you with items that are closer to you."
                                },
                            ];

    self.coachMarksView = [[WSCoachMarksView alloc] initWithFrame:self.tabBarController.view.bounds coachMarks:coachMarks];
    [self.tabBarController.view addSubview:self.coachMarksView];
    self.coachMarksView.animationDuration = 0.5f;
    self.coachMarksView.enableContinueLabel = YES;

    [self.coachMarksView start];
}


- (void)viewDidAppear:(BOOL)animated {
    // Show coach marks
    BOOL coachMarksShown = [[NSUserDefaults standardUserDefaults] boolForKey:@"WSCoachMarksShown"];
    if (coachMarksShown == NO) {
        // Don't show again
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"WSCoachMarksShown"];
        [[NSUserDefaults standardUserDefaults] synchronize];

        // Show coach marks
        [self.coachMarksView start];
    }
}

Answer 1

在viewDidLoad中，无论您在NSUserDefaults中设置了什么，都始终开始介绍。检查viewDidAppear是正确的，但它已经在那时播放

如何使WSCoachMarksView演练仅在用户第一次打开应用程序时运行？

1 个答案: