重用UITableView及其UI / delegate方法

Question

I have 2 UIViewControllers , the 2 ones are containing EXACTLY the SAME UITableView (with its custom cells and delegate methods). My question is their any way to "centralize" the UITableView UI and code(datasource and delegates), so that I just have to modify in one file instead of 2 .

Answer 1

following up on my comment, the table view in the xib in your father vc and the delegate methods in your father vc are just in the same place because you chose it to be like that, the table view and the delegate methods are actually quite detached.

so create a new object, say FatherTableController which implements UITableViewDatasource and UITabelViewDelegate and copy those methods out of your FatherViewController into this FatherTableController

now in your FatherViewController, go like

FatherTableController tableController = [FatherTableController new]; //should be a property or a singleton

self.tableview.delegate = tableController;
self.tableview.datasource = tableController;

now you can do that in both your separate vc's that use the same table, and even use the exact same table contoller between the two views if you share it in some way (possibly via a singleton pattern, which can be useful for sharing state between the two view controllers)

Answer 2

Solution:

@interface FatherViewController : UIViewController <UITableViewDataSource,UITableViewDelegate>
@property (strong, nonatomic) IBOutlet UITableView *parentTableView;

@implementation FatherViewController

    - (void)viewDidLoad {
        [super viewDidLoad];

        self.parentTableView.delegate=self;
        self.parentTableView.dataSource=self;
    }

    //declare the delegate / datasource methods

--------------------- CHILD VIEW CONTROLLER ---------------------

@interface ViewController : FatherViewController 

@property (strong, nonatomic) IBOutlet UITableView *tableView;

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.tableView.delegate=self;
    self.tableView.dataSource=self;

}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
        return [super tableView:tableView cellForRowAtIndexPath:indexPath];
}

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return [super numberOfSectionsInTableView:tableView];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return [super tableView:tableView numberOfRowsInSection:section];
}