UITableView is null after first data load, reloadData does not work - objective-c

Question

I have a custom UIView with a UITableView in it. I connect the delegate and dataSource via interface builder, it looks like this: http://postimg.org/image/nj9elaj4h/ (may not upload images yet :( )
When I load the view, the data is displayed as it should be. But when I try to call reloadData, nothing happens. I checked if the uitableview is set, but it is NULL. But as soon as I drag the tableView and it reloads it views, the new data is presented. Anyone got an idea why reloadData does not work?
.h looks like this:
#interface NextTitleView : UIView<UITableViewDataSource,UITableViewDelegate,SociusClientDelegate,UIActionSheetDelegate,Ne xtTitleCustomCellDelegate>
{
NexTitleCustomCell* _cellInFocus;
}
#property(nonatomic,retain)IBOutlet UITableView* _tableViewNextTitle;
#end
thanks for your help :D
EDIT: Added .m file
#implementation NextTitleView
#synthesize _tableViewNextTitle;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
-(id)init
{
if(self)
{
[SharedSingeltons sharedInstance]._client.delegateCustomClient = self;
_tableViewNextTitle = [[UITableView alloc]init];
}
return self;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 2;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
if(section == 0)
return #"Now playing";
if(section == 1)
return #"Comming Next";
else
return #"";
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if(section == 0)
return 1;
if (section == 1)
return [[SharedSingeltons sharedInstance]._client._musicList count];
else
return 0;
}
-(NexTitleCustomCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NexTitleCustomCell* cell = [[NexTitleCustomCell alloc]init];
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"NextTitleCustomCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
MusicItem* item = [[SharedSingeltons sharedInstance]._client._musicList
objectAtIndex:indexPath.row];
cell.delegate = self;
cell._labelSongTitle.text = item._songTitle;
cell._labelSongTitle.textColor = [UIColor blackColor];
cell._labelSubtitle.text = item._artist;
cell._identifier = item._songIdentifier;
cell._labelRating.text = item._rating.stringValue;
return cell;
}
-(void)clientDidReceiveMusicList:(SociusClient *)sender list:(NSMutableArray *)array
{
for(MusicItem* item in [SharedSingeltons sharedInstance]._client._musicList)
{
NSLog(#"rating:%#",item._rating);
}
NSLog(#"TAbleVIEW:%#",_tableViewNextTitle);
[self._tableViewNextTitle reloadData];
}
-(void)didPressActionButton:(NexTitleCustomCell *)sender
{
NSLog(#"Show alert view");
_cellInFocus = sender;
UIActionSheet *popupQuery = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:#"Cancel" destructiveButtonTitle:nil otherButtonTitles:#"Vote Up", #"Like",#"Remember", nil];
[popupQuery showInView:self];
}
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex == 0)
{
NSLog(#"Vote up");
[self sendUpdateVoteForSong];
}
}
-(void)sendUpdateVoteForSong
{
NSMutableDictionary* dict = [[NSMutableDictionary alloc]init];
[dict setObject:_cellInFocus._identifier forKey:#"Vote"];
NSLog(#"Identifier:%#",_cellInFocus._identifier);
[[SharedSingeltons sharedInstance]._client sendObject:dict error:nil];
}
#end

Answer 1

I would say you are calling reload data too soon, probably in initWithNibName, you should be calling it in viewDidLoad.

Answer 2

I just set up a uiviewcontroller to handle the view. Now it works fine.

Answer 3

I think that UIActionSheet led to the problem，you can try to reloadData twice.

Answer 4

I noticed you are New-ing your Table view, but it's an Outlet... You don't need to alloc init your table view, if it's an IBOutlet. So either get rid of the IBOutlet, and just declare it as a property (but then you need to make sure you lay out your Table view programmatically), or keep the IBOutlet, and get rid of the code to alloc init it. Currently also your datasource and delegate are set from IB, so if you alloc init your table view, those won't be set anymore...
The tableview outlet should NOT be nil.
Can you put a breakpoint in awakeFromNib, and see if the TableView outlet is NIL there?
Are you loading the View Class that contains the table view by using its NIB file properly?
If you just embed the View class in the storyboard, it will not load the NIB automatically. I usually use a View container in that case, then load the NIB programmatically, and embed the loaded view in the view container programmatically.
NSArray *arrayXibObjects = [[NSBundle bundleWithIdentifier:#"net.mycompany.myappid"] loadNibNamed:#"myNibName" owner:nil options:nil];
for (id object in arrayXibObjects) {
if ([object isKindOfClass:myNibsClass]) {
return object; // this is your class loaded from NIB
}
}
This code can be placed in a utility method, to make it accessible with 1 line of code.
The returned Class is going to have the IBOutlets connected from the NIB to it's respective Class.
Now check in the debugger:
po [loadedClassFromNib tableView] // should not be NIL
Then embed the loaded NIB in the container like this: (or use constraints)
[self.viewContainer addSubview: classLoadedFromNib];
classLoadedFromNib.frame = self.viewContainer.frame;