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我想在我的应用程序中使用 BCGenieEffect。我从 github 下载演示示例。https://github.com/Ciechan/BCGenieEffect

在这个例子中使用了 xib,并且 4 个 UIButtons 与 xib 一起使用。我想在没有 xib 的情况下使用此代码,并且仅用于一个按钮。我不想拖动我的视图,这就是我删除该代码的原因。

我有一个 UIButton:

UIButton *Pop_Hidebtn = [[UIButton alloc]initWithFrame:CGRectMake(290, 5, 15, 15)];
Pop_Hidebtn.backgroundColor = [UIColor clearColor];
[Pop_Hidebtn setImage:[UIImage imageNamed:@"close.png"] forState:UIControlStateNormal];

Pop_Hidebtn.titleLabel.textColor = [UIColor blueColor];
[Pop_Hidebtn addTarget:self action:@selector(Hidden_pop:)  forControlEvents:UIControlEventTouchUpInside];  
[popup_View addSubview:Pop_Hidebtn];


-(void)Hidden_pop:(UIButton *)sender{
    [self genieToRect:sender.frame edge:BCRectEdgeBottom];
}


// I modified this and it says-> UIButton may not respond to enumerateobjectsusingblock
// And Crash 

- (void) genieToRect: (CGRect)rect edge: (BCRectEdge) edge {
    NSTimeInterval duration = 3.0;

    CGRect endRect = CGRectInset(rect, 5.0, 5.0);

    [help_Button enumerateObjectsUsingBlock:^(UIButton *button, NSUInteger idx, BOOL   *stop) { 
        help_Button.enabled = NO;
    }];


    if (self.viewIsIn) {

        [popup_View_under2 genieOutTransitionWithDuration:duration startRect:endRect      startEdge:edge completion:^{
            popup_View_under2.userInteractionEnabled = YES;

            [help_Button enumerateObjectsUsingBlock:^(UIButton *button, NSUInteger idx,  BOOL  *stop) {
                help_Button.enabled = YES;

            }];
        }];

    } else {
        popup_View_under2.userInteractionEnabled = NO;

        //UIButton may not respond to enumerateobjectsusingblock
        // Crash on this line
        [popup_View_under2 genieInTransitionWithDuration:duration destinationRect:endRect      destinationEdge:edge completion: ^{
            [help_Button enumerateObjectsUsingBlock:^(UIButton *button, NSUInteger idx,  BOOL *stop) {
                button.enabled = YES;
            }];
        }];
    }

    self.viewIsIn = ! self.viewIsIn;
}

我怎么解决这个问题?

4

1 回答 1

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- (void)enumerateObjectsUsingBlock:(void (^)(id obj, NSUInteger idx, BOOL *stop))block

NSArray,NSOrderedSetNSSet类的实例方法。因此,如果您在我认为是UIButton.

该方法旨在用于枚举集合中的对象。因此,您必须以这种方式将按钮放入NSArray(或NSMutableArray)中:

[myButtons enumerateObjectsUsingBlock:^(UIButton *aButton, NSUInteger idx, BOOL   *stop) { 
    aButton.enabled = NO;
}];

将为数组中的每个对象调用该块myButtons,接收对象本身(在这种情况下,它将被强制转换为UIButton *)、所述对象的索引和指向 a 的指针BOOL,您可以使用它来提前退出循环。

请注意,既然您说您将只使用一个按钮,为什么不删除该方法调用并只使用

helpButton.enabled = YES;

没有枚举?

于 2013-01-25T09:31:07.273 回答