Question

我正在进行afnetworking，我的Web服务花费了太多时间来加载数据，我希望UI不会冻结，我使用这个tutorial在后台运行webservice，这样我就可以在其他地方工作了观点也是如此，但直到现在还没有成功。

  -(void) getArticles :(NSString*)stateAbbre  completionHandler:(void (^)(id array))success
{

    [MyCommonFunctions showGlobalProgressHUDWithTitle:@"Loading"];
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    NSString *link = [NSString stringWithFormat:@"http://cloud.ilmasoft.com/depilex/depilexs/get_articles_ios.php"];

    NSLog(@"%@",link);
    manager.responseSerializer.acceptableContentTypes = [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/html"];
    [manager GET:link parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"JSON: %@", responseObject);


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


        NSDictionary *returnedDealDict = responseObject ;
        NSArray *returnArray = [returnedDealDict objectForKey:@"Result"];


        for(NSDictionary *dealDict in returnArray)
        {
            ArticlesDC *articles = [[ArticlesDC alloc] init];
            articles.articlesID = [[dealDict objectForKey:@"id"]intValue ];
            articles.articleTitle = [dealDict objectForKey:@"title" ];
            articles.articleDetail =  [dealDict objectForKey:@"details" ];
            articles.articleDate = [dealDict objectForKey:@"date" ];
            articles.articlePic = [dealDict objectForKey:@"pic" ];
            articles.articleThumbPath = [dealDict objectForKey:@"thumb_path" ];
            articles.articleStatus = [dealDict objectForKey:@"status" ];
            [dataArray addObject:articles];
            [MyCommonFunctions dismissGlobalHUD];
        }

        success(dataArray);

        //        [MBProgressHUD hideHUDForView:self.view animated:YES];

        if (dataArray.count == 0)
        {
            ALERT_VIEW(@"Please check your internet connection.");
            //            [MBProgressHUD hideHUDForView:self.view animated:YES];
        }

    }
         failure:^(AFHTTPRequestOperation *operation, NSError *error) {
             NSLog(@"Error: %@", error);
             ALERT_VIEW(@"Error occured while loading data.");
             //             [MBProgressHUD hideHUDForView:self.view animated:YES];
         }];

}

在我的视图中确实加载了方法

[self getArticles:nil completionHandler:^(id array) {
        articlesArray = array;
        [tblView reloadData];
        for (ArticlesDC *article in articlesArray)
        {

            NSString *stringWithoutSpace = [[NSString stringWithFormat:@"http://cloud.ilmasoft.com/depilex/admin/%@", article.articleThumbPath] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
            NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString: stringWithoutSpace]];
            UIImage *imgOne = [UIImage imageWithData:imageData];
            NSString *stringforImg = [[NSString stringWithFormat:@"http://cloud.ilmasoft.com/depilex/admin/%@", article.articlePic] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
            NSData *imageDta = [NSData dataWithContentsOfURL:[NSURL URLWithString: stringforImg]];
            UIImage *imgTwo = [UIImage imageWithData:imageDta];

            [dbHandler insertArticlesIntoSqlite:article.articleTitle andDetail:article.articleDetail anddate:article.articleDate andImage:[MyCommonFunctions saveImageInDocuments:imgTwo] andThumb:[MyCommonFunctions saveImageInDocuments:imgOne]];
            [defaults setInteger:1 forKey:@"getArticlesOffline"];
            [defaults synchronize];
        }

    }];

Answer 1

问题不在于AF，而是在该过程结束时您调用dataWithContentsOfURL两次，这直接在主线程上运行以下载一些图像。您需要将该下载移动到后台线程。

Ui视图长时间冻结

1 个答案: