Question

首先感谢您的帮助。

我正在尝试使用AFNetworking下载多个图像，问题是当我尝试在块成功部分中添加手势识别器时，在完成后我收到错误。

这是我的代码。

- (void)loadPictures {

    NSArray *listItems = [[_dictForData objectForKey:@"imgs"] componentsSeparatedByString:ITEM_SEPARATOR];

    NSLog(@" == Num Images %d", [listItems count]-1);

    NSMutableArray *imgNames= [[NSMutableArray alloc] init];

    for(int i=0;i<[listItems count]-1;i++)
    {
        NSString *nameImage = [listItems[i] componentsSeparatedByString:TAG_SEPARATOR][1];
        NSLog(@" == Name Image %@", nameImage);
        [imgNames addObject: nameImage];
        NSLog(@"== %@", [imgNames objectAtIndex:i]);
    }

    // Setup the array of UIImageViews
    NSMutableArray *imgArray = [[NSMutableArray alloc] init];

    for(NSString *name in imgNames) {
        NSString *string = [NSString stringWithFormat:@"%@%@%@%@%@", SERVER, URL_FILES,[_dictForData objectForKey:@"id"],URL_IMAGES_HI,name];
        NSURL *url = [NSURL URLWithString:string];
        NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];


        AFHTTPRequestOperation *requestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
        requestOperation.responseSerializer = [AFImageResponseSerializer serializer];
        [requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
            NSLog(@"Response: %@", responseObject);
            UIImageView *tempImageView;
            tempImageView = [[UIImageView alloc] init];
            tempImageView.contentMode = UIViewContentModeScaleAspectFit;
            tempImageView.image = responseObject;
            [imgArray addObject:tempImageView];
            UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected)];
            singleTap.numberOfTapsRequired = 1;
            [tempImageView setUserInteractionEnabled:YES];
            [tempImageView addGestureRecognizer:singleTap];
            if ([imgArray count] == [listItems count]-1) {
                //CGSize pageSize = self.scrollView.frame.size; // scrollView is an IBOutlet for our UIScrollView
                NSUInteger page = 0;
                NSUInteger widthPicture  = 100;
                NSUInteger heightPicture = 100;

                for(UIView *view in imgArray) {

                    [self.scrollView addSubview:view];
                    // This is the important line
                    //view.frame = CGRectMake(pageSize.width * page++ + 10, 0, pageSize.width - 20, pageSize.height);
                    view.frame = CGRectMake(widthPicture * page++, 0, widthPicture - 5, heightPicture);
                    // We're making use of the scrollView's frame size (pageSize) so we need to;
                    // +10 to left offset of image pos (1/2 the gap)
                    // -20 for UIImageView's width (to leave 10 gap at left and right)
                }

                //self.scrollView.contentSize = CGSizeMake(pageSize.width * [imgArray count], pageSize.height);
                self.scrollView.contentSize = CGSizeMake((widthPicture + 5) * [imgArray count], 100);
            }

        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            NSLog(@"Image error: %@", error);
        }];
        [requestOperation start];


    }
}

-(void)tapDetected{
    NSLog(@"single Tap on imageview");

}

编辑：

当我点按图片视图时，错误是EXC_BAD_ACCESS（代码= 1，地址= 0x7000000C）。

我需要点击创建的图片，然后在imageview上显示单击。

我做错了什么？或者我该如何解决？。

提前致谢并抱歉我的Inglish

Answer 1

而不是将UIImageView添加到imgArray [imgArray addObject:tempImageView]; 直接添加[self.scrollView addSubview:tempImageView];
从循环中评论它。我完全理解你正在使用CGRectMake的循环。
仍在测试您的代码及其完全正常工作我删除了这一行if ([imgArray count] == [listItems count]-1) {

UIImageView *tempImageView;
    tempImageView = [[UIImageView alloc] init];
    tempImageView.contentMode = UIViewContentModeScaleAspectFit;
    tempImageView.image = responseObject;
    [imgArray addObject:tempImageView];
    [self.view addSubview:tempImageView];

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected)];
    singleTap.numberOfTapsRequired = 1;
    [tempImageView setUserInteractionEnabled:YES];
    [tempImageView addGestureRecognizer:singleTap];

在setCompletionBlockWithSuccess中AFNetworking UIGestureRecognizer

1 个答案: