Question

I want to insert and delete data by adding a button, when i click my button query works but data is not inserted or deleted at once i have to restart the app to see the inserted or deleted row in my tableView, i also added tableView reload data but it do not work here is some peace of code
in this view i want to insert or delete row

- (void)viewDidLoad
{
    [super viewDidLoad];
    isLoadingAlphabets=1;

    DBHandler *obj= [[DBHandler alloc]init];
    Array = [obj loadFavoriteWords];

    isSearching = 0;
    displayItems = [[NSMutableArray alloc] initWithArray:Array];    
    // Do any additional setup after loading the view, typically from a nib.
      [tableview reloadData];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
    - (void)dealloc {
        [tableview release];
        [super dealloc];
    }
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if(isSearching){
        return [displayItems count];   
    }
    else {
        NSLog(@"Count: %d", [Array count]);
        return [Array count];
    }
}

here is my button from where i m adding or deleting row in favorites

- (void)viewDidLoad
{
     [super viewDidLoad];

    DBHandler* db=[[DBHandler alloc]init];
   // NSLog(@"asas%@",detail_word);
    if(![db isAlreadyInFavorites:word_id])
         {
            [btnFavorite setImage:[UIImage imageNamed: @"star-grey.png"  ] forState:UIControlStateNormal];
        } else {
            [btnFavorite setImage:[UIImage imageNamed:@"star-yellow.png"] forState:UIControlStateNormal ];  
        }
    // Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
- (IBAction)btn:(id)sender {
    DBHandler *db = [[DBHandler alloc]init];

    if(![db isAlreadyInFavorites:word_id]){

        [btnFavorite setImage:[UIImage imageNamed:@"star-yellow.png"] forState:UIControlStateNormal];
        [db addFavoriteWord:word_id];

    }
    else{

        [db deleteFavoriteWord:word_id];

        [btnFavorite setImage:[UIImage imageNamed:@"star-grey.png"] forState:UIControlStateNormal];

    } 
}

Answer 1

just remove all data from your displayItems or from Array and add again this new data from database like belllow

- (IBAction)btn:(id)sender {
    DBHandler *db = [[DBHandler alloc]init];

    if(![db isAlreadyInFavorites:word_id]){

        [btnFavorite setImage:[UIImage imageNamed:@"star-yellow.png"] forState:UIControlStateNormal];
        [db addFavoriteWord:word_id];

    }
    else{

        [db deleteFavoriteWord:word_id];

        [btnFavorite setImage:[UIImage imageNamed:@"star-grey.png"] forState:UIControlStateNormal];

    } 
    Array = [db loadFavoriteWords];
    if([displayItems count]>0){
          [displayItems removeAllObjects];
    }
    displayItems = [[NSMutableArray alloc] initWithArray:Array];    
    [tableview reloadData];
}