Question

我是记分牌应用程序，在按钮点击时我不需要添加UItextfield和标签。我不断在这些方法中遇到错误。有什么建议吗？

错误讯息： “从不兼容的类型'double'分配'UIView *'”

    self.yOffset = 60.0;

错误讯息： “从不兼容的类型'UIView *'中分配'CGFloat'（又名'浮动'）”

    frame.origin.y = self.yOffset;

错误讯息： “二进制表达式的操作数无效（'UIView *'和'CGFloat'（又名'浮动'））”

    self.yOffset += frame.size.height;

以下是代码：

-(void)addPlayerTapped:(id)sender {

    NSLog(@"Adding Player");
    self.yOffset = 60.0;

    UIViewController *llVC = [[DetailViewController alloc] init];
    llVC.view.alpha = 0.0;
    [self.playersArray addObject:llVC];
    [self.view addSubview:llVC.view];

    [self repositionFields];
}

-(void)repositionFields {

    // Reposition each view in the array
    for (DetailViewController *llVC in self.playersArray) {
        CGRect frame = llVC.view.frame;
        frame.origin.x = 15;
        frame.origin.y = self.yOffset;
        llVC.view.frame = frame;
        self.yOffset += frame.size.height;
    }

    // Add some animations to make it look nice
    [UIView animateWithDuration:0.3 animations:^{
        CGRect frame = self.addPlayerButton.frame;
        frame.origin.y = self.yOffset;
        self.addPlayerButton.frame = frame;
    } completion:^(BOOL finished) {
        DetailViewController *llVC = [self.playersArray lastObject];
        llVC.view.alpha = 1.0;
    }];
}

Answer 1

从错误消息判断，您似乎将yOffset声明为UIView *而不是CGFloat，例如

@property (assign, nonatomic) UIView *yOffset;

然而它应该是

@property (assign, nonatomic) CGFloat yOffset;

CGFloat中的错误消息

1 个答案: