Question

flickPhotosSearch应该做评论的自我。图像线确实如此。如果我取消注释，它工作正常，但由于我需要它动态工作，我需要让flickrPhotoSearch做同样的事情。它将相同的信息保存到图像数组中，但是当它离开方法时它就不再有效了。

[self flickrPhotosSearch:url];
/*    self.images = [[NSMutableArray alloc] initWithObjects:
                          [NSArray arrayWithObjects:@"http://farm6.staticflickr.com/5095/5426345292_40ec29d5ea.jpg", @"http://farm6.staticflickr.com/5095/5426345292_40ec29d5ea_s.jpg", nil], nil]; */


       NSLog(@"%@", self.images);

   }
   return self;
}

-(void)flickrPhotosSearch:(NSURL *) url {

    NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {

        NSDictionary *photos = [JSON objectForKey:@"photos"];
        self.picturesOfLocations = [photos objectForKey:@"photo"];


        for (NSDictionary * photo in self.picturesOfLocations ){



            NSString* flickrfarmID = [photo  objectForKey:@"farm"];
            NSString* flickrServer = [photo  objectForKey:@"server"];
            NSString* flickrID = [photo  objectForKey:@"id"];
            NSString* flickrSecret = [photo  objectForKey:@"secret"];

            NSString *stringURLOriginalImage = [[NSString alloc] initWithFormat:@"http://farm%@.staticflickr.com/%@/%@_%@.jpg",flickrfarmID,flickrServer, flickrID,flickrSecret];
            NSString *stringURLSmallImage = [[NSString alloc] initWithFormat:@"http://farm%@.staticflickr.com/%@/%@_%@_s.jpg",flickrfarmID,flickrServer, flickrID,flickrSecret];


            [self.images addObject:[NSArray arrayWithObjects:stringURLOriginalImage,stringURLSmallImage, nil]];

            NSLog(@"%@", self.images);


        }


    } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {

        NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);

    }];
    [operation start];

}

Answer 1

更改：

self.images = [[NSMutableArray alloc] initWithObjects: [NSArray arrayWithObjects:@"http://farm6.staticflickr.com/5095/5426345292_40ec29d5ea.jpg", @"http://farm6.staticflickr.com/5095/5426345292_40ec29d5ea_s.jpg", nil], nil];

致：

[self.images addObject:@"http://farm6.staticflickr.com/5095/5426345292_40ec29d5ea.jpg"];
[self.images addObject:@"http://farm6.staticflickr.com/5095/5426345292_40ec29d5ea_s.jpg"];

MutableArray不会永久存储信息

1 个答案: