cellForRowAtIndexPath未被调用所需的次数

Question

The functionality that I am trying to achieve is that first I am showing two rows in a UITableView which is showing perfectly. Then on didSelectRowAtIndexpath: , I am adding the numberOfRows in the UITableView , for which I am reloading the UITableView after adding the numberOfRows and the required data.

My problem is that I am passing the new number of rows in the numberOfRowsInSection: (which I have checked, it is passing correctly) but cellForRowAtIndexpath: is called only two times after that, which is the previous numberOfRows value.

My Code:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.currentSubCategoryRows;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
   // My code for cell construction goes here
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
   [self.arrWithAdditionalValues addObjectsFromArray:[self.dictSubCategoriesLevel3 objectForKey:[NSString stringWithFormat:@"%d",rowOpened]]];
   self.currentSubCategoryRows += self.arrWithAdditionalValues.count;
            [tableView reloadData];
}

What could be the reason?

Any help would be appreciated!!!

Answer 1

I found the solution.

As I was resizing my UITableView as per its number of rows in cellForRowAtIndexPath: , that's why the next part of the UITableView was not visible, and for the part of the UITableView which is not visible, cellForRowAtIndexPath: is never called.

Sorry to bother you all.

Thanks a lot for your help!!!

Answer 2

cellForRowAtIndexPath: is only called as soon as is needed for drawing. You have to build that method without controlling when it will be invoked.

Answer 3

Try to Reload table in viewWillAppear

- (void)viewWillAppear:(BOOL)animated {
    [tableview reloadData];
    }