我无法从PFFile获取图像 [英] I can't get image from PFFile

问题描述

Parse.com刚刚更新了其SDK，以支持本地存储.但是在安装新的SDK之后，PFFile出现了一些问题.我已经使用相同的方法很长时间了，但是现在我正在使用新的SDK，因此无法正常工作.

Parse.com just updated their SDKs to support local storage. But after installing new SDKs I have occurred some problems with PFFile. I have used the same method for a long time, but now that I'm using the new SDK I can't get it to work.

这是我的代码:

.h文件

@property (strong, nonatomic) IBOutlet PFFile *iconPhoto;

.m文件

cell.iconPhoto.image = [UIImage imageNamed:@"placeholder.png"]; // placeholder image
cell.iconPhoto.file = (PFFile *)object[@"icon"]; // remote image
[cell.iconPhoto loadInBackground:^(UIImage *image, NSError *error) {
    cell.iconPhoto.image = image;
    cell.userInteractionEnabled = YES;

   }];

我跑步时得到这些错误(链接)

其他人也有同样的问题吗?

Is someone else having the same problems?

更新:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

    });

    static NSString *CellIdentifier = @"Cell";
    MainTVCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    PFObject *object = [self.currentCategories objectAtIndex:indexPath.row];

    cell.mainLabel.text = object[@"name"];
    cell.userInteractionEnabled = YES;

    if (![object[@"icon"] isEqual:[NSNull null]]) {

        cell.image = [UIImage imageNamed:@"loading.png"]; // placeholder image
        cell.iconPhoto = (PFFile *)object[@"icon"]; // remote image
        [cell.iconPhoto getDataInBackgroundWithBlock:^(NSData *imageData, NSError *error) {
            if (!error && imageData) {
                cell.image = [UIImage imageWithData:imageData];
                cell.userInteractionEnabled = YES;
            }

        }];


    }

    return cell;
}

推荐答案

我自己找到了解决方案.

I found a solution myself.

 PFFile *file = (PFFile *)object[@"icon"];
[file getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {

    cell.iconImageView.image = [UIImage imageNamed:@"placeholder.png"]; // placeholder image
    cell.iconImageView.image = [UIImage imageWithData:data];
    cell.userInteractionEnabled = YES;

}];

这将加载图像. 奇怪的是它不会在模拟器中运行.但是可以在iPhone上完美运行.

This will load the images. Weird thing it won't run in the simulator.. But works perfectly on iPhone.

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