Creating a UITableView class and assign to storyboard - ios

Question

Is it possible to create a class UITableview and assign to UITableview in storyboard? I have this example but the delegate methods don't call. and the table appears empty.
In the class Table.h:
#import <UIKit/UIKit.h>
#interface Table : UITableView <UITableViewDataSource,UITableViewDelegate>
#end
In the class Table.m:
#implementation Table{
NSArray *data;
}
-(instancetype)init{
self = [super init];
if (self) {
self.delegate= self;
self.dataSource = self;
data = #[#"bmw",#"mercedes",#"audi"];
}
return self;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [data count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *cellIdentifier = #"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
cell.textLabel.text = [data objectAtIndex:indexPath.row];
return cell;
}
And finally, in my ViewController.m it's here I need to be implemented.
I have this code:
#import "ViewController.h"
#import "Table.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
Table *mainTable = [Table new];
self.table = mainTable;
}
#end

Answer 1

how to create Sublasss for tableView
// MyTableView.h
// This overrides the UITableViewDataSource with your own so you can add any methods you would like.
#protocol MyTableViewDataSource <UITableViewDataSource>
#required
// This is where you put methods that are required for your custom table to work (optional)
- (int)myRequiredMethod;
#optional
// This is where you put methods that are optional, like settings (optional)
#end
// This overrides the UITableViewDelegate with your own so you can add any methods you would like.
#protocol MyTableViewDelegate <UITableViewDelegate>
#required
// This is where you put methods that are required for your custom table to work (optional)
#optional
// This is where you put methods that are optional, like settings (optional)
#end
// Make sure you add UITableViewDelegate and UITableViewDataSource implementations.
#interface MyTableView : UITableView <UITableViewDelegate, UITableViewDataSource> {
// Your customer datasource and delegate.
id <MyTableViewDataSource> myDataSource;
id <MyTableViewDelegate> myDelegate;
}
#end
//MyTableView.m
#import "MyTableView.h"
#implementation MyTableView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
// This is how you can use your custom method.
int i = [myDataSource myRequiredMethod];
}
return self;
}
- (void)awakeFromNib {
// This assigns the delegate and datasource you assigned to File's Owner in your xib to your custom methods
myDataSource = (id<MyTableViewDataSource>)self.dataSource;
myDelegate = (id<MyTableViewDelegate>)self.delegate;
self.delegate = self;
self.dataSource = self;
}
// This is an example of how to override an existing UITableView method.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// This calls the method implemented in your ViewController. See Below.
NSInteger rows = [myDataSource tableView:tableView numberOfRowsInSection:section];
return rows;
}
#end
//MyViewController.h
#import "MyTableView.h"
// Use MyTableViewDataSource and MyTableViewDelegate instead of UITableViewDataSource and UITableViewDelegate
#interface MyViewController : UIViewController <MyTableViewDataSource, MyTableViewDelegate> {
#end
// MyViewController.m
#import "MyViewController.h"
#interface MyViewController ()
#end
#implementation MyViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
// This method will be overridden by myTableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 1;
}
- (int)myRequiredMethod {
return 2;
}

Answer 2

I think you misunderstood the concept here. I am not sure what you are trying to accomplish - subclass a TableView (ie customize a TableView so it can be reused anywhere), or creating your own TableViewController. Delegates are to be implemented on Controllers and not on the object itself. So your self.delegate=self is wrong and does not make sense.