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成功从网络读取到数据,为什么无法现实在tableview中?

0
悬赏园豆:10 [待解决问题]
 1 #pragma mark - Table View
 2 
 3 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
 4     return 1;
 5 }
 6 
 7 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
 8     return self.objects.count;
 9 }
10 
11 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
12     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
13 
14     NSDictionary *dictData = self.objects[indexPath.row];
15     cell.textLabel.text = dictData[@"Content"];
16     cell.detailTextLabel.text = dictData[@"CDate"];
17     return cell;
18 }
19 
20 - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
21     // Return NO if you do not want the specified item to be editable.
22     return YES;
23 }
24 
25 - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
26     if (editingStyle == UITableViewCellEditingStyleDelete) {
27         [self.objects removeObjectAtIndex:indexPath.row];
28         [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
29     } else if (editingStyle == UITableViewCellEditingStyleInsert) {
30         // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view.
31     }
32 }
33 
34 #pragma mark -- 开始请求Web Service
35 - (void)startRequest {
36     NSString *strURL = @"http://www.51work6.com/service/mynotes/WebService.php";
37     
38     NSURL *url = [NSURL URLWithString:strURL];
39     
40     NSString *post = [NSString stringWithFormat:@"email=%@&type=%@&action=%@", @"xxxxxxxxx@qq.com", @"JSON", @"query"];
41     
42     NSData *postData = [post dataUsingEncoding:NSUTF8StringEncoding];
43     
44     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
45     [request setHTTPMethod:@"POST"];
46     [request setHTTPBody:postData];
47     
48     NSURLSessionConfiguration *defaultConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
49     NSURLSession *session = [NSURLSession sessionWithConfiguration:defaultConfig delegate:nil delegateQueue:[NSOperationQueue mainQueue]];
50     
51     NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
52         
53             NSLog(@"请求完成...");
54         if (!error) {
55             NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
56             [self reloadView:dict];
57         } else {
58             NSLog(@"error: %@", error.localizedDescription);
59         }
60     }];
61     [task resume];
62 }
63 
64 #pragma mark -- 重新加载视图
65 - (void)reloadView:(NSDictionary *) res {
66     
67     NSNumber *resultCode = res[@"ResultCode"];
68     
69     if ([resultCode integerValue] >= 0) {
70         self.objects = res[@"Record"];
71         [self.tableView reloadData];
72         NSLog(@"success");
73     } else {
74         NSString *errorStr = [resultCode errorMessage];
75         UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"错误信息" message:errorStr preferredStyle:UIAlertControllerStyleAlert];
76         UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil];
77         [alertController addAction:okAction];
78         [self presentViewController:alertController animated:TRUE completion:nil];
79     }
80     
81 }
82 @end

运行程序时,输出信息为:

1 请求完成...
2 success

 

直接在地址栏上敲,是可以响应的:

 

网站的数据是有的,读取也没有异常,请问为什么tableview上却什么数据都没有显示出来?

 

 

 

 

SharpeyeKardel的主页 SharpeyeKardel | 初学一级 | 园豆:30
提问于:2016-11-17 21:32
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所有回答(2)
0

dispatch_async(dispatch_get_main_queue(), ^{

[self.tableView reloadData];

});

 

试一试

另外:http://www.cnblogs.com/CoderEYLee/p/Object-C-0018.html

人生为代码而活 | 园豆:208 (菜鸟二级) | 2017-07-24 23:26
0

确认代理遵循与否。cell注册与否。最简单的断点,确定代理走了吗

柠檬树下柠檬果 | 园豆:216 (菜鸟二级) | 2017-08-10 17:10
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