GTTableViewController 1.2.0

GTTableViewController 1.2.0

TestsTested
LangLanguage Obj-CObjective C
License MIT
ReleasedLast Release Dec 2014

Maintained by Unclaimed.


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  • By
  • gongtao

GTTableViewController is a light weight subclass of UIViewController that integrates NSFetchedResultsController and UITableView to display data of CoreData. It has a good scalability, and can be integrated to your project either by inheritance or as a child viewController using datasource methods. To display the data in UITableView, all you need to do is to customize your own NSFetchRequest and UITableViewCell objects.

How to get started?

Inheritance

Write a GTTableViewController subclass and override its methods like this:

NSManagedObjectContext

Return NSManagedObjectContext object which CoreData context you want to use. Default returns from AppDelegate, If you do not override it.

- (NSManagedObjectContext *)managedObjectContext
{
    id appDelegate = [UIApplication sharedApplication].delegate;
    return [appDelegate managedObjectContext];
}

NSFetchRequest

Retrun NSFetchRequest object include the fetch rules and orders. This method must be overrided.

- (NSFetchRequest *)fetchRequest
{
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *playerEntity = [NSEntityDescription entityForName:@"Player" inManagedObjectContext:[self managedObjectContext]];
    [fetchRequest setEntity:playerEntity];

    NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"age" ascending:YES];
    [fetchRequest setSortDescriptors:[NSArray arrayWithObject:sortDescriptor]];

    return fetchRequest;
}

UITableViewCell Display

Config your own UITableViewCell. Cell is empty, if you do not override it.

- (void)configCell:(UITableViewCell *)cell cellForRowAtIndexPath:(NSIndexPath *)indexPath fetchedResultsController:(NSFetchedResultsController *)fetchedResultsController
{
    Player *player = [fetchedResultsController objectAtIndexPath:indexPath];
    cell.textLabel.text = player.name;
}

UITableViewCell

Return your own UITableViewCell. Cell is UITableViewCellStyleDefault, if you do not override it.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath fetchedResultsController:(NSFetchedResultsController *)fetchedResultsController
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (!cell) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    [self configCell:cell cellForRowAtIndexPath:indexPath fetchedResultsController:fetchedResultsController];

    return cell;
}

GTTableViewControllerDataSource

DataSource is almost like Inheritance way. This way is used for integrating it as a subview or a child viewController.

Init

In UIViewController object, write code like:

GTTableViewController *viewController = [[GTTableViewController alloc] init];
viewController.dataSource = self;
[self addChildViewController:viewController];
[self.view addSubview:viewController.view];

NSManagedObjectContext

- (NSManagedObjectContext *)managedObjectContextGTTableViewController:(GTTableViewController *)viewController

NSFetchRequest

This method is requeired.

- (NSFetchRequest *)fetchRequestGTTableViewController:(GTTableViewController *)viewController

UITableViewCell Display

- (void)configCell:(UITableViewCell *)cell viewController:(GTTableViewController *)viewController fetchedResultsController:(NSFetchedResultsController *)fetchedResultsController

UITableViewCell

- (void)configCell:(UITableViewCell *)cell cellForRowAtIndexPath:(NSIndexPath *)indexPath viewController:(GTTableViewController *)viewController fetchedResultsController:(NSFetchedResultsController *)fetchedResultsController

Other useful infomation

Fetch objects method

- (void)performFetch

This property controls the max number of displayed fetched objects in UITableView.

@property (nonatomic, assign) int numberOfFetchLimit

Contact

龚涛 Gong Tao mail: [email protected]