Question

尝试截取父UIView上的触摸事件，该UIView封装了UIScrollView和另一个UIView（叠加），它们并排放置（意思是在同一个容器视图中彼此叠加）。到目前为止，我只是试图在父UIView上打印出touchesBegan事件的确认结果，但它正在抛出EXC_BAD_ACCESS，并出现此错误：

    Program received signal:  “EXC_BAD_ACCESS”.
    warning: Unable to restore previously selected frame.
    Data Formatters temporarily unavailable, will re-try after a 'continue'. (Not safe    
    to call dlopen at this time.)

我认为所有相关代码都应该在下面。我也将整个项目上传到http://devmu.com/transfer/NoteMap.zip，如果这更容易看到的话。

UIViewController的loadView：

- (void)loadView {
    [super loadView];

    [[NSBundle mainBundle] loadNibNamed:@"ContainerView" owner:self options:nil];       
    ContainerView *container = self.containerView = [[ContainerView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];

    self.view = container;
    //[self.view addSubview:container];

    [container release];
};
-the dealloc function releases the containerView

ContainerView：

@implementation ContainerView

@synthesize overlayView=_overlayerView, scrollView=_scrollView;

- (id)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        //setup scrollview
        [[NSBundle mainBundle] loadNibNamed:@"GridScrollView" owner:self options:nil];
        self.scrollView = [[GridScrollView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
        [self addSubview:self.scrollView];

        //setup overlayview
        NSArray *nibOverlayContents = [[NSBundle mainBundle] loadNibNamed:@"MapOverlayView" owner:self options:nil];
        self.overlayView = [nibOverlayContents objectAtIndex:0];
        [self addSubview:self.overlayView];     
    }
    return self;
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];
    NSLog(@"ContainerView touchesBegan");
}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    NSLog(@"ContainerView touchesEnded");
}

- (void)dealloc {
    [self.overlayView release];
    [self.scrollView release];
    [super dealloc];
}

我有ContainerView的单独nib文件（从控制器加载），它有两个子视图，MapView和MapOverlayView（从ContainerView的init加载）。不确定它是否重要......但是nib文件只引用了它们包含的视图。即。 ContainerView.xib的文件所有者是UIViewController，它的唯一视图是ContainerView。 MapView.xib和MapOverlayView.xib的文件所有者是ContainerView，它包含对MapView和MapOverlayView的两个引用（ContainerView / File Owner的IBOutlets）。

导致这种情况的原因是什么？

感谢您的帮助。

Answer 1

评论声明

[container release];

并使用NSObject的dealloc（）释放容器对象分配的资源，以便

-(void) dealloc
{
  [self.containerView dealloc];
}

EXC_BAD_ACCESS：尝试处理父UIVIew中的touches事件时

1 个答案: