視圖未填充數據AFNetworking

Question

我正在使用AFNetworking，我的成功塊工作正常，但始終首先加載視圖。 我沒有使用表格視圖作為視圖，只有標簽和圖像需要刷新。 我現在應該怎么辦 ？

-(void)myVenusWithClubDetail :(NSString *)IDs completionHandler:(void (^)(id array))success
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

        NSString *link = [NSString stringWithFormat:@"%@",KWSURLVenuDetail];
       NSLog(@"%@",IDs);
        NSDictionary *params = @{@"Id" : IDs};
         NSLog(@"%@",link);
        [manager POST:link parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"JSON: %@", responseObject);
        NSMutableArray *dataArray = [[NSMutableArray alloc] init];

        ClubDetailDC *clubDC = [[ClubDetailDC alloc] init];
        clubDC.cDVenuID = [[responseObject objectForKey:@"Id"]integerValue];
        clubDC.cDCatID = [[responseObject objectForKey:@"cat_id"]integerValue];
        clubDC.cDName = [responseObject objectForKey:@"name"];
        clubDC.cDHeadLine = [responseObject objectForKey:@"headline"];
        clubDC.cDImage = [responseObject objectForKey:@"image"];
        clubDC.cDLong = [responseObject objectForKey:@"long"];
        clubDC.cDLat = [responseObject objectForKey:@"lat"];
        clubDC.cDAddress = [responseObject objectForKey:@"address"];
        clubDC.cDSummary = [responseObject objectForKey:@"summary"];
        clubDC.cDStat = [responseObject objectForKey:@"stat"];
        clubDC.cDUS = [responseObject objectForKey:@"us"];
        clubDC.cDImage = [self loadClubDetailImages:clubDC.cDImage];

        [dataArray addObject:clubDC];
        success(dataArray);
        if (dataArray.count == 0)
        {
            ALERT_VIEW(@"Please check your internet connection.");
        }

    }
         failure:^(AFHTTPRequestOperation *operation, NSError *error) {
             NSLog(@"Error: %@", error);
             ALERT_VIEW(@"Error while loading data.")
         }];
}

我的venuVC.m就是這樣，我要顯示數據

-(void)reloadView
{
    clubDetail = [[ClubDetailDC alloc] init];
    venu_dataArray = [[NSMutableArray alloc] init];
    upcomingArray = [[NSMutableArray alloc] init];
    GET_DBHANDLER
    //    venu_dataArray = [dbHandler get_club_detail:venuID];
    NSString *strVenuID = [NSString stringWithFormat:@"%d",venuID];
    NSLog(@"%@",strVenuID);
    [dbHandler myVenusWithClubDetail:strVenuID completionHandler:^(id array)
     {
         venu_dataArray = array;
         //         NSLog(@"%d",array.count);
     }];

}
-(void)viewWillAppear:(BOOL)animated
{
    [self reloadView];

    for (clubDetail in venu_dataArray)
    {
        lblDescription.text = [ NSString stringWithFormat:@"Neighborhood:%@ Information on whats happening tonight", clubDetail.cDAddress];
        [imgClub setImageWithURL:[NSURL URLWithString:clubDetail.cDImage]];
    }
    UIFont* font_name = [UIFont fontWithName:@"Corbel" size:17];
    UIFont* bold_font = [UIFont fontWithName:@"Corbel-Bold" size:17];
    lbl_upcomingEvents.font = font_name;
    lbl_Unighted.font = bold_font;
    lblDescription.font = [UIFont fontWithName:@"Corbel" size:11];
    lblCheckIn.font = [UIFont fontWithName:@"Corbel" size:13];
    lblCount.font = [UIFont fontWithName:@"Corbel" size:12];
    lblGoodEmotion.font = [UIFont fontWithName:@"Corbel" size:14];
    lblHotEmotion.font = [UIFont fontWithName:@"Corbel" size:14];
}

我的問題是先加載視圖，然后從成功塊獲取數據。 有人可以幫忙嗎？

謝謝。

Answer 1

由於venue_dataArray在reloadView方法中是本地的， reloadView您將無法在viewWillAppear對其進行迭代。 所以我想，您應該將標簽分配代碼移至成功代碼塊，如下所示：

[dbHandler myVenusWithClubDetail:strVenuID completionHandler:^(id array)
 {
     venu_dataArray = array;
     //         NSLog(@"%d",array.count);
     for (clubDetail in venu_dataArray)
     {
        lblDescription.text = [ NSString stringWithFormat:@"Neighborhood:%@ Information on whats happening tonight", clubDetail.cDAddress];
        [imgClub setImageWithURL:[NSURL URLWithString:clubDetail.cDImage]];
     }
 }];

Answer 2

您可以通過兩種方式做到這一點，或者在視圖中編寫函數，代碼將像這樣

-(void)myVenusWithClubDetail :(NSString *)IDs completionHandler:(void (^)(id array))success
{

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    NSString *link = [NSString stringWithFormat:@"%@",KWSURLVenuDetail];
    NSLog(@"%@",IDs);
    NSDictionary *params = @{@"Id" : IDs};
    NSLog(@"%@",link);

    [manager POST:link parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"JSON: %@", responseObject);


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

        ClubDetailDC *clubDC = [[ClubDetailDC alloc] init];
        clubDC.cDVenuID = [[responseObject objectForKey:@"Id"]integerValue];
        clubDC.cDCatID = [[responseObject objectForKey:@"cat_id"]integerValue];
        clubDC.cDName = [responseObject objectForKey:@"name"];
        clubDC.cDHeadLine = [responseObject objectForKey:@"headline"];
        clubDC.cDImage = [responseObject objectForKey:@"image"];
        clubDC.cDLong = [responseObject objectForKey:@"long"];
        clubDC.cDLat = [responseObject objectForKey:@"lat"];
        clubDC.cDAddress = [responseObject objectForKey:@"address"];
        clubDC.cDSummary = [responseObject objectForKey:@"summary"];
        clubDC.cDStat = [responseObject objectForKey:@"stat"];
        clubDC.cDUS = [responseObject objectForKey:@"us"];
        clubDC.cDImage = [self loadClubDetailImages:clubDC.cDImage];
        for (clubDetail in venu_dataArray)
        {
            lblDescription.text = [ NSString stringWithFormat:@"Neighborhood:%@ Information on whats happening tonight", clubDetail.cDAddress];
            [imgClub setImageWithURL:[NSURL URLWithString:clubDetail.cDImage]];
        }



        [dataArray addObject:clubDC];
        success(dataArray);

        if (dataArray.count == 0)
        {
            ALERT_VIEW(@"Please check your internet connection.");
        }

    }
          failure:^(AFHTTPRequestOperation *operation, NSError *error) {
              NSLog(@"Error: %@", error);
              ALERT_VIEW(@"Error while loading data.")

          }];


}

或者如果您想在單獨的類中使用函數，則在成功塊中這樣做

[dbHandler myVenusWithClubDetail:strVenuID completionHandler:^(id array)
 {
     venu_dataArray = array;
     //         NSLog(@"%d",array.count);
     for (clubDetail in venu_dataArray)
     {
        lblDescription.text = [ NSString stringWithFormat:@"Neighborhood:%@ Information on whats happening tonight", clubDetail.cDAddress];
        [imgClub setImageWithURL:[NSURL URLWithString:clubDetail.cDImage]];
     }
 }];

Answer 3

您也可以發布成功功能嗎？ 如果您在標簽上設置了文本並在uiimageview上設置了圖像，則所有內容均應進行相應更新。

您的成功功能可能類似於：

- (void)updateViewsWithData:(NSMutableArray *)dataArray {
    var clubDC = dataArray[0];
    self.yourLabel.text = clubDC.cDSummary;
    self.addressLabel.text = clubDC.cDAddress;
    self.imageView.image = clubDC.cDImage;
}

您必須先使用AFNetworking庫或類似工具才能下載圖像，因為我很確定您得到的是圖像的URL。

如果您還有其他問題，請發表評論。

Answer 4

在您的代碼中

clubDC.cDImage = [self loadClubDetailImages:clubDC.cDImage];

這行代碼將根據您實現的方式從服務器或本地目錄中獲取圖像。 預期會延遲獲取圖像。

self.imageView.image = clubDC.cDImage;

當您執行上述代碼時，可能會無法完全下載映像。