UITableViewCell在向下滚动之前不会显示数据

Question

My JSON response to UITableView .

But, UITableView isn't show up data until scroll down.

Please help me.How to resolve it?

Sorry for my bad English language. Because, I can speak English a little bit.

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    globlOnDisplayEffect = [GlobalVariable sharedInstance];
    globlOnDisplayEffect.arTableDataSelectedWhereHouse = [[NSArray alloc] init];

}

- (NSInteger) numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return [globlOnDisplayEffect.arTableDataSelected count]>0 ?[globlOnDisplayEffect.arTableDataSelected count]:1;

}

- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"DisplayEffectQtyViewCell";
    DisplayEffectQtyViewCell *cell = [self.tableViewDetailList dequeueReusableCellWithIdentifier:simpleTableIdentifier forIndexPath:indexPath];
    if(cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"DisplayEffectQtyViewCell" owner:self options:nil];
        cell = [nib objectAtIndex:0];

    } 
    if (globlOnDisplayEffect.arTableDataSelected) {
        NSMutableArray *myMutbleArray = [[NSMutableArray alloc] init];
        [myMutbleArray addObject:globlOnDisplayEffect.arTableDataSelected];
        if (myMutbleArray)
        {
                NSDictionary *myDic = [globlOnDisplayEffect.arTableDataSelected objectAtIndex:indexPath.row];
                NSDictionary *cont = [myDic objectForKey:@"DataList_SPI_DetailF10"];
                NSString *f10_cmpt = [self getString:[cont objectForKey:@"f10_cmpt"]];
                NSString *f10_dt = [self getString:[cont objectForKey:@"f10_dt"]];
                NSString *f10_item = [self getString:[cont objectForKey:@"f10_item"]];
                NSString *f10_lot = [self getString:[cont objectForKey:@"f10_lot"]];
                NSString *f10_model = [self getString:[cont objectForKey:@"f10_model"]];
                NSString *f10_of = [self getString:[cont objectForKey:@"f10_of"]];
                NSString *f10_semi = [self getString:[cont objectForKey:@"f10_semi"]];
                NSString *f10_tm = [self getString:[cont objectForKey:@"f10_tm"]];
                NSString *f10_uncmp = [self getString:[cont objectForKey:@"f10_uncmp"]];
               [cell setf10_cmpt:f10_cmpt setf10_dt:f10_dt setf10_item:f10_item setf10_lot:f10_lot setf10_model:f10_model setf10_of:f10_of setf10_semi:f10_semi setf10_tm:f10_tm setf10_uncmp:f10_uncmp];
         }
    }

    return cell;
}

Answer 1

Do this --

- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"DisplayEffectQtyViewCell";
    DisplayEffectQtyViewCell *cell = [self.tableViewDetailList dequeueReusableCellWithIdentifier:simpleTableIdentifier forIndexPath:indexPath];
    if(cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"DisplayEffectQtyViewCell" owner:self options:nil];
        cell = [nib objectAtIndex:0];

    }  if (globlOnDisplayEffect.arTableDataSelected) {
        NSMutableArray *myMutbleArray = [[NSMutableArray alloc] init];
        [myMutbleArray addObject:globlOnDisplayEffect.arTableDataSelected];
         if (myMutbleArray)
        {
            NSDictionary *myDic = [globlOnDisplayEffect.arTableDataSelected objectAtIndex:indexPath.row];
            NSDictionary *cont = [myDic objectForKey:@"DataList_SPI_DetailF10"];
            NSString *f10_cmpt = [self getString:[cont objectForKey:@"f10_cmpt"]];
            NSString *f10_dt = [self getString:[cont objectForKey:@"f10_dt"]];
            NSString *f10_item = [self getString:[cont objectForKey:@"f10_item"]];
            NSString *f10_lot = [self getString:[cont objectForKey:@"f10_lot"]];
            NSString *f10_model = [self getString:[cont objectForKey:@"f10_model"]];
            NSString *f10_of = [self getString:[cont objectForKey:@"f10_of"]];
            NSString *f10_semi = [self getString:[cont objectForKey:@"f10_semi"]];
            NSString *f10_tm = [self getString:[cont objectForKey:@"f10_tm"]];
            NSString *f10_uncmp = [self getString:[cont objectForKey:@"f10_uncmp"]];

            [cell setf10_cmpt:f10_cmpt setf10_dt:f10_dt setf10_item:f10_item setf10_lot:f10_lot setf10_model:f10_model setf10_of:f10_of setf10_semi:f10_semi setf10_tm:f10_tm setf10_uncmp:f10_uncmp];
        }
    }
    return cell;
}

Just remove the else brackets. The thing you were doing is if cell is not found after dequeue you are returning an empty cell, and in the next time when scrolling, it is going inside the else block and it is being filled up with data. So, just remove the else brackets.

Answer 2

Replace the following code with the existing one.

- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"DisplayEffectQtyViewCell";
    DisplayEffectQtyViewCell *cell = [self.tableViewDetailList dequeueReusableCellWithIdentifier:simpleTableIdentifier forIndexPath:indexPath];
    if(cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"DisplayEffectQtyViewCell" owner:self options:nil];
        cell = [nib objectAtIndex:0];

    } 
    //check whether the globlOnDisplayEffect.arTableDataSelected is empty
    if(globlOnDisplayEffect.arTableDataSelected  != nil && [globlOnDisplayEffect.arTableDataSelected count] > 0){
                NSDictionary *myDic = [globlOnDisplayEffect.arTableDataSelected objectAtIndex:indexPath.row];
                NSDictionary *cont = [myDic objectForKey:@"DataList_SPI_DetailF10"];
                NSString *f10_cmpt = [self getString:[cont objectForKey:@"f10_cmpt"]];
                NSString *f10_dt = [self getString:[cont objectForKey:@"f10_dt"]];
                NSString *f10_item = [self getString:[cont objectForKey:@"f10_item"]];
                NSString *f10_lot = [self getString:[cont objectForKey:@"f10_lot"]];
                NSString *f10_model = [self getString:[cont objectForKey:@"f10_model"]];
                NSString *f10_of = [self getString:[cont objectForKey:@"f10_of"]];
                NSString *f10_semi = [self getString:[cont objectForKey:@"f10_semi"]];
                NSString *f10_tm = [self getString:[cont objectForKey:@"f10_tm"]];
                NSString *f10_uncmp = [self getString:[cont objectForKey:@"f10_uncmp"]];
               [cell setf10_cmpt:f10_cmpt setf10_dt:f10_dt setf10_item:f10_item setf10_lot:f10_lot setf10_model:f10_model setf10_of:f10_of setf10_semi:f10_semi setf10_tm:f10_tm setf10_uncmp:f10_uncmp];
    }
    return cell;
}

- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [globlOnDisplayEffect.arTableDataSelected count];
}

- (NSInteger) numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

Also you have to reload the tableview with the following line. Whenever you Added a content inside the globlOnDisplayEffect.arTableDataSelected

[self.tableViewDetailList reloadData];