some problems of numOfRows method in UITableView - objective-c

Question

this is my UITableViewDateSource code:
#import "TableViewDataSource.h"
#implementation TableViewDataSource
#synthesize tableView;
#synthesize tableCell;
#synthesize LHfetchedResultsController;
#synthesize numberOfRows;
#synthesize dataTemp;
#synthesize paused;
-(id)initWithTableView:(UITableView *) tableView
{
self = [super init];
if (self) {
self.tableView = tableView;
self.tableView.dataSource = self;
self.tableView.delegate = self;
}
return self;
}
-(void)dateSourceWithChineseNewestVideosFetchedResultsController
{
self.tableCell = [TableCellModel getCellOfFreeChampionsList];
[self setChineseNewestVideosLHFetchedResultsController];
}
-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
[self configCellData:indexPath cell:self.tableCell];
// Configure the cell with data from the managed object.
return self.tableCell;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([[self.LHfetchedResultsController sections] count] > 0) {
id <NSFetchedResultsSectionInfo> sectionInfo = [[self.LHfetchedResultsController sections] objectAtIndex:section];
self.numberOfRows = [sectionInfo numberOfObjects];
// return self.numberOfRows;
return 1;
} else
return 0;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [[self.LHfetchedResultsController sections] count];
}
-(void)configCellData:(NSIndexPath *)indexPath cell:(id)cell
{
NSLog(#"DataSourceTempCount is %lu",(unsigned long)self.dataTemp.count);
// NSInteger indexNum = indexPath.row;
// ChineseNewestVideos * Video = [self.dataTemp objectAtIndex:indexNum];
ChineseNewestVideos * Video = [self.LHfetchedResultsController objectAtIndexPath:indexPath];
UITextView * textView = [self.tableCell viewWithTag:11];
textView.text = Video.title;
UILabel * la = [self.tableCell viewWithTag:12];
la.text = [NSString stringWithFormat:#"Data Count is %lu",(unsigned long)self.numberOfRows];
if (indexPath.row %2 == 0) {
self.tableCell.backgroundColor = [UIColor greenColor];
}else
{
self.tableCell.backgroundColor = [UIColor brownColor];
}
}
-(void)setLHFetchedResultsController:(NSFetchedResultsController *)fetchedResultsController
{
self.LHfetchedResultsController = fetchedResultsController;
self.LHfetchedResultsController.delegate = self;
NSError * err;
if (![self.LHfetchedResultsController performFetch:&err]) {
//启动
NSLog(#"Unresolved error : %#, %#",err,[err userInfo]);
exit(-1);
}
}
-(void)setChineseNewestVideosLHFetchedResultsController
{
NSManagedObjectContext * context = ((AppDelegate*)[[UIApplication sharedApplication] delegate]).persistentContainer.viewContext;
NSFetchRequest * request = [ChineseNewestVideos fetchRequest];
NSEntityDescription * testEntity = [NSEntityDescription entityForName:#"ChineseNewestVideos" inManagedObjectContext:context];
request.entity = testEntity;
NSSortDescriptor * sort = [[NSSortDescriptor alloc] initWithKey:#"createdate" ascending:NO];
[request setSortDescriptors:[NSArray arrayWithObject:sort]];
// [request setFetchBatchSize:20];
NSFetchedResultsController * ChineseNewestVideosLHFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];
[self setLHFetchedResultsController:ChineseNewestVideosLHFetchedResultsController];
}
TableView is a property of ViewController
data has no problem, but display of table has problem
start from -(void)setChineseNewestVideosLHFetchedResultsController
when i set different return of -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section, display is different
like this:
when return 1
when return one
when return 2
when return two
when return 3
[when return three][3]
when return 4 or more
[when return four or more][4]
display always like this,and when i drop up, the textview will suddenly disappear
who know what happen?

Answer 1

You need to init every cell in cellForRowAtIndexPath thats why there is only one tableview cell. You need to "create" cell for each row. So put that method in the
-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
TableCellModel *cell = [TableCellModel getCellOfFreeChampionsList];
[self configCellData:indexPath cell:self.tableCell];
return cell;
}