iOS Datasource not being set as expected of the TableView - ios

Question

I have a TableView "cannedTv". Each cell contains another TableView "valuesTv". The structure of datasource for cannedTv is { NSString *name, NSArray *valuesArr }. valuesArr is set as datasource for valuesTv. cannedTv is an expandable tableview. Initially just name is displayed, when expanded the valuesTv tableView is displayed. This is my code for didSelectRowAtIndexPath and cellForRowAtIndexPath delegate methods of the tableviews.
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"ROW Selected...TAG = %d", tableView.tag);
selectedValueIndex = -1;
if (tableView == self.cannedTV) {
// USer taps expanded row
if (selectedIndex == indexPath.row) {
selectedIndex = -1;
[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath ] withRowAnimation:UITableViewRowAnimationFade];
return;
}
// USer taps differnt row
if (selectedIndex != -1) {
NSIndexPath *prevPath = [NSIndexPath indexPathForRow:selectedIndex inSection:0];
selectedIndex = indexPath.row;
[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:prevPath] withRowAnimation:UITableViewRowAnimationFade];
}
// User taps new row with none expanded
selectedIndex = indexPath.row;
[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
return;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"Table View TAG = %d ROW = %d", tableView.tag, indexPath.row);
if (tableView.tag == 10) { // cell.valuesTv
CannedValueCell *ccell = (CannedValueCell *) [tableView dequeueReusableCellWithIdentifier:#"cannedValueCell"];
if (ccell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"CannedValueCell" owner:self options:nil];
ccell = [nib objectAtIndex:0];
}
// Populate valuesTv
ccell.valueTextView.text = [valuesArray objectAtIndex:indexPath.row];
UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(valueTextViewTapped)];
[ccell.valueTextView addGestureRecognizer:gestureRecognizer];
//[ccell.valueTextView sizeToFit];
return ccell;
} else {
// cannedTv
static NSString *cellIdentifier = #"CannedCell";
cell = (CannedCell *) [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if(cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"CannedCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
// Set Datasource & Delegate for valuesTv tableview
cell.valuesTv.dataSource = self;
cell.valuesTv.delegate = self;
if (selectedIndex == indexPath.row) {
// Do expanded cell stuff
[cell.tapInsertLbl setFont:[UIFont fontWithName:#"OpenSans" size:8.0]];
cell.tapInsertLbl.hidden = FALSE;
[cell.contentView setBackgroundColor:[UIColor lightGrayColor]];
[cell.contentView.layer setBorderColor: (__bridge CGColorRef)([UIColor redColor])];
[cell.contentView.layer setBorderWidth:1.0f];
} else {
// Do closed cell stuff
cell.tapInsertLbl.hidden = TRUE;
cell.contentView.backgroundColor = [UIColor whiteColor];
}
if (tableView == self.cannedTV) {
valuesArray = nil;
CannedItem *ci = [candRespList objectAtIndex:indexPath.row];
cell.tagLbl.text = ci.name;
// Set the valuesArray so it be used in populating the valuesTv
valuesArray = [NSMutableArray arrayWithArray: ci.valuesArr];
ci = nil;
} else if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.tagLbl.text = [searchResults objectAtIndex:indexPath.row];
}
[cell.tagLbl sizeToFit];
return cell;
}
}
The problem I am facing is, every time the right datasource is shown shown in valuesTv. At this moment I have 2 arrays in valuesArray with 0th element having 1 object and 1st element having 3 objects (of NSString). Datasource of cannedTv also has 2 rows in it. Sometimes, one time both rows of canndTv shows correct datasource and then both shows same datasource. Sometimes, both rows shows the same datasource. I don't understand why valuesArray can't get the right datasource. While debugging also, I found that at times valuesArray has right datasource but the tableview is showing wrongly, at times the control doesn't go to // Populates valuesTv line and thus previously set valuesArray is only shown. I tried many ways, but can't get the results as expected. Also tried to set valuesArray in didSelectRowAtIndexPath after setting selectedIndex, but that also didn't help.
I am stuck on this since yesterday and can't get thru. Where am I going wrong due to which correct datasource is not shown/reflected on the tableviews. Can you please try to help me out. Any help is highly appreciated. Thanks a lot.
UPDATE :-
Created new datasource & delegate in CannedCell object itself - it contains the valuesTv.
#interface CannedCell : UITableViewCell <UITableViewDataSource, UITableViewDelegate>
#property NSArray *valuesDataSource; // Contains the valuesArray contents
In my VC, removed datasource for cell.values.datasource & cell.valuesTv.delegate lines. In the cellForRowAtIndexPath method for top table, set the datasource like this :-
if (tableView == self.cannedTV) {
valuesArray = nil;
CannedItem *ci = [candRespList objectAtIndex:indexPath.row];
cell.tagLbl.text = ci.name; //[tagsArray objectAtIndex:indexPath.row];
//valuesArray = [NSMutableArray arrayWithArray: ci.valuesArr];
cell.valuesDataSource = ci.valuesArr; // SET DATASOURCE
// This is setting proper array always
ci = nil;
}
Commented the whole if (tableView.tag == 10) { in cellForRowAtIndexPath method.
And in CannedCell :-
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (valuesDataSource != nil)
return valuesDataSource.count;
else
return 0;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
CannedValueCell *ccell = (CannedValueCell *) [tableView dequeueReusableCellWithIdentifier:#"cannedValueCell"];
if (ccell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"CannedValueCell" owner:self options:nil];
ccell = [nib objectAtIndex:0];
}
// Populate valuesTv
ccell.valueTextView.text = [valuesDataSource objectAtIndex:indexPath.row];
ccell.valueTextView.tag = indexPath.row;
return ccell;
}
Yet the results are as earlier only. I mean even if array of 3 objects are set as valuedDataSource, the sub-table shows only single object array. What do the think now can be the reason for this ?

Answer 1

As suggested by Paulw11, I created other object to handle TableViewDelegate and datasource for the sub-table. Though that didn't make any difference in the results of the problem.
I set UITableViewDelegate & Datasource in my top table's Cell class. Passed the array to be the datasource of the table.
Importantly, after setting the datasource of sub-table on calling
[cell.valuesTv reloadData]
forced the sub-table to reload its data and that finally did the trick. Till then things weren't working.