Types de pointeurs incompatibles renvoyant 'UIView * _strong' d'une fonction avec le type de résultat 'CardCreationClass *'

Question

Je reçois l'erreur ci-dessus et je ne suis pas sûr de savoir comment résoudre ce problème, est-ce que quelqu'un pourrait me dire pourquoi je reçois cette erreur afin que je puisse le réparer?

Le code lui-même fonctionne et dessine l'image (à l'exception de la couche de texte) à l'écran, donc je veux juste supprimer l'erreur. J'ai déjà cherché le débordement de la pile et j'ai trouvé 'casting' mais après avoir essayé cette technique, l'erreur est toujours là.

Je pense que c'est parce que je suis en utilisant les méthodes

[CardElementsCreationClass drawHeart] 

et

[CardElementsCreationClass drawValueWithSuit:suit AndValue:value] 

Mon .m

#import "CardCreationClass.h" 

@implementation CardCreationClass 

//-------------------- 
//Create a card 
// 
+ (UIView *) newPlayingCardWithSuit:(NSString *)suit 
          AndValue:(NSString *)value { 
    //Create playing card UIVIew 
    CGRect playingCardBounds = CGRectMake(100, 50, 100, 200); 
    //CGPoint playingCardPosition = CGPointMake(100, 50); 

    UIView* playingCard = [[UIView alloc] initWithFrame:playingCardBounds]; 

    //CREATE BACK OF CARD 
    // 

    //CREATE FRONT OF CARD 
    CALayer* front = [CALayer layer]; 

    //Determine suit 
    CAShapeLayer *cardSuitShapeLayer; 

    if ([suit isEqualToString:@"heart"]) { 
     cardSuitShapeLayer = [CardElementsCreationClass drawHeart]; 
    } 

    [front addSublayer:cardSuitShapeLayer]; 

    //Determine value 
    CATextLayer *cardValueTextLayer = [CardElementsCreationClass drawValueWithSuit:suit AndValue:value]; 

    [front addSublayer:cardValueTextLayer]; 

    //Add layers to card 
    [playingCard.layer addSublayer:front]; 

    NSLog(@"Type = %@", [playingCard class]); 

    //Return - **ERROR HAPPENS HERE** 
    return playingCard; 
} 

- (id)initWithFrame:(CGRect)frame { 
    self = [super initWithFrame:frame]; 
    if (self) { 
     // Initialization code 
    } 
    return self; 
} 

- (void)drawRect:(CGRect)rect { 
    // Drawing code 
    [CardCreationClass newPlayingCardWithSuit:@"heart" AndValue:@"A"]; 
} 

@end 

Code Dessin

#import "CardElementsCreationClass.h" 

@implementation CardElementsCreationClass 

//-------------------- 
//HEARTS 
// 
+ (CGMutablePathRef)newHeartPath { 
    //Declare 
    CGMutablePathRef heartPath = CGPathCreateMutable(); 

    //Create shape 
    CGPathAddEllipseInRect(heartPath, NULL, CGRectMake(0, 0, 20, 20)); 
    CGPathAddEllipseInRect(heartPath, NULL, CGRectMake(20, 0, 20, 20)); 

    CGPathMoveToPoint(heartPath, NULL, 37.5, 16.5); 

    CGPathAddLineToPoint(heartPath, NULL, 37.5, 16.5); 
    CGPathAddLineToPoint(heartPath, NULL, 20, 37.5); 
    CGPathAddLineToPoint(heartPath, NULL, 2.5, 16.5); 
    CGPathAddLineToPoint(heartPath, NULL, 20, 10); 

    CGPathCloseSubpath(heartPath); 

    //Return 
    return heartPath; 
} 

+ (CGMutablePathRef)newHeartHighlightPath { 
    //Declare 
    CGMutablePathRef heartHighlightPath = CGPathCreateMutable(); 

    //Create hightlight 
    CGPathAddArc(heartHighlightPath, NULL, 0, 0, 7, -(110 * M_PI)/180, -(0 * M_PI), NO); 

    CGPathAddLineToPoint(heartHighlightPath, NULL, 4, 0); 

    CGPathAddCurveToPoint(heartHighlightPath, NULL, 4, -7, 0, -7, 0, -7); 

    //Return 
    return heartHighlightPath; 
} 

+ (CAShapeLayer*)drawHeart { 
    CAShapeLayer* heartShapeLayer = [CAShapeLayer layer]; 

    //Context 
    CGContextRef context = UIGraphicsGetCurrentContext(); 

    //Declare 
    CGMutablePathRef heartPath = [self newHeartPath]; 

    /*CGPathAddArc(heartPath, NULL, 10, 10, 10, M_PI, 0, false); // Left hump 
    CGPathAddArc(heartPath, NULL, 30, 10, 10, M_PI, 0, false); // Right hump 
    CGPathAddLineToPoint(heartPath, NULL, 20, 37.5); // Pointy end 

    CGPathCloseSubpath(heartPath);*/ 

    //Line 
    CGContextSetLineWidth(context, 8.0); 
    CGContextSetLineJoin(context, kCGLineJoinRound); 

    //Colour shape 
    CGContextSetCMYKStrokeColor(context, 0.17, 1, 1, 0.07, 1); 
    CGContextSetCMYKFillColor(context, 0.07, 1, 1, 0.01, 1); 

    //Draw shape 
    CGContextTranslateCTM(context, 4, 4); 

    CGContextAddPath(context, heartPath); 
    CGContextDrawPath(context, kCGPathStroke); 

    CGContextAddPath(context, heartPath); 
    CGContextDrawPath(context, kCGPathFill); 

    //Colour highlight 
    CGContextSetCMYKFillColor(context, 0, 0, 0, 0, 0.3); 

    //Left highlight 
    CGMutablePathRef heartHightlightLeft = [self newHeartHighlightPath]; 

    //Draw highlight 
    CGContextTranslateCTM(context, 10, 9); 

    CGContextAddPath(context, heartHightlightLeft); 
    CGContextDrawPath(context, kCGPathFill); 

    //Right highlight 
    CGMutablePathRef heartHightlightRight = [self newHeartHighlightPath]; 

    //Draw hightlight 
    CGContextTranslateCTM(context, 20, 0); 

    CGContextAddPath(context, heartHightlightRight); 
    CGContextDrawPath(context, kCGPathFill); 

    //Attach 
    heartShapeLayer.path = heartPath; 

    //Release 
    CGPathRelease(heartPath); 
    CGPathRelease(heartHightlightLeft); 
    CGPathRelease(heartHightlightRight); 

    //Return 
    return heartShapeLayer; 
} 

//-------------------- 
//VALUES 
// 
+ (CATextLayer*)drawValueWithSuit:(NSString *)suit 
         AndValue:(NSString *)value { 
    CATextLayer* valueTextLayer = [CATextLayer layer]; 

    valueTextLayer.string = value; 
    valueTextLayer.borderWidth = 2.0; 
    valueTextLayer.borderColor = [UIColor blackColor].CGColor; 

    valueTextLayer.bounds = CGRectMake(0, 0, 50, 50); 

    //Determine colour 
    if ([suit isEqualToString:@"heart"] || [suit isEqualToString:@"diamond"]) { 
     valueTextLayer.foregroundColor = [UIColor redColor].CGColor; 
    } else if ([suit isEqualToString:@"club"] || [suit isEqualToString:@"spade"]) { 
     valueTextLayer.foregroundColor = [UIColor blackColor].CGColor; 
    } 

    //Return 
    return valueTextLayer; 
} 

@end 

Answer 1

Renommez la méthode

+ (UIView *) newPlayingCardWithSuit:(NSString *)suit 
          AndValue:(NSString *)value 

à quelque chose qui ne commence pas par le mot new. Par exemple:

+ (UIView *) playingCardWithSuit:(NSString *)suit 
         andValue:(NSString *)value