ios 获取错误“Unknown receiver coachMarksView; Did you mean WSCoachMarksView error？”

taor4pac 于 12个月前发布在 iOS

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我目前正在实现WSCoachMarksView框架，以便在第一次使用应用程序时向用户介绍功能。然而，我的viewDidAppear中的代码给了我以下错误：Unknown receiver 'coachMarksView'; Did you mean 'WSCoachMarksView'?
我不知道为什么会发生这种情况，因为我已经在viewDidLoad中示例化了coachMarksView，所以它应该能识别它。

- (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."
                                },
                            ];

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

        // Or show coach marks after a second delay
        // [coachMarksView performSelector:@selector(start) withObject:nil afterDelay:1.0f];
    }   
}

字符串

ios

来源：https://stackoverflow.com/questions/27048330/getting-the-error-unknown-receiver-coachmarksview-did-you-mean-wscoachmarksvie

3条答案

按热度按时间

3j86kqsm1#

您需要将coachMarksView设置为一个属性，这样您就可以访问同一个示例。coachMarksView在viewWillAppear中是未定义的：因为该作用域不知道viewDidLoad中的作用域。
要为coachMarksView创建属性，您需要在viewController中执行以下操作：

@interface UIViewController ()
@property (nonatomic, strong) WKCoachMarksView *coachMarksView;
@end

字符串
然后在viewDidLoad中

- (void)viewDidLoad
{
  self.coachMarksView = [[WSCoachMarksView alloc] initWithFrame:self.navigationController.bounds]];
}

型
现在要访问该示例，只需使用self. coachMarksView。

- (void)viewDidAppear:(BOOL)animated
{
  [super viewDidAppear:animated];
  [self.coachMarksView start];
}

型
以下是有关XNUMBER-C http://rypress.com/tutorials/objective-c/properties.html中的getter、setter和属性的更多信息

赞(0）回复(0）举报 12个月前

o4tp2gmn2#

您已经将coachMarksView声明为viewDidLoad内部的局部变量。“Local”意味着它只在您声明的位置可见。
尝试将其改为类的属性，以便对象可以从其所有方法访问它。（使用self.coachMarksView。）

赞(0）回复(0）举报 12个月前

gcuhipw93#

把我的案子发出去，也许对某人有用：

*错误：Unknown receiver 'RSJsonSymbol'; did you mean 'RSSymbol'? Replace 'RSJsonSymbol' with 'RSSymbol'
*原因：不包含头文件
*解决方案：包含其头文件RSJsonSymbol.h

赞(0）回复(0）举报 12个月前

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ios 获取错误“Unknown receiver coachMarksView; Did you mean WSCoachMarksView error？”

3条答案

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