How to use generate UITableView for other UIViewController? - ios

Question

I am trying to use a generated UITableView in my UIViewController.
This is how I am trying to generate:-
TableViewGeneratorController.h
#import <UIKit/UIKit.h>
#interface TableViewGeneratorController : UITableViewController<UITableViewDataSource,UITableViewDelegate>
#property(nonatomic,retain) UITableView *tableView;
- (UITableView *)getTableView;
#end
TableViewGeneratorController.m
#import "TableViewGeneratorController.h"
#interface TableViewGeneratorController (){
}
#end
#implementation TableViewGeneratorController
#synthesize tableView;
- (void)viewDidLoad {
[super viewDidLoad];
}
- (id)initWithNibName:(NSString )nibNameOrNil bundle:(NSBundle )nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self){
self.tableView = [[UITableView alloc]initWithFrame:CGRectMake(10, 80, 300, 400)];
tableView.delegate = self;
tableView.dataSource = self;
tableView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
}
return self;
}
- (UITableView *)getTableView
{
return self.tableView;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 20;
}
- (UITableViewCell )tableView:(UITableView )tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *cellIndentifier = #"Cell";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:cellIndentifier];
if (cell == nil){
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIndentifier];
}
cell.textLabel.text = #"Yes";
return cell;
}
#end
Now In my UIViewController I am calling that getTableView and adding the UITableView as subview but I am getting exception:-
ViewController.m
TableViewGeneratorController *tableViewGeneratorController = [[TableViewGeneratorController alloc]init];
UITableView *tableView = [tableViewGeneratorController getTableView];
[self.view addSubview: tableView ];
Exception:-
* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[_UIAppearanceCustomizableClassInfo numberOfSectionsInTableView(inlove): unrecognized selector sent to instance 0x7b1ba7e0'
* First throw call stack:

Answer 1

You should NOT generate any controls in your init function. The init function is only for logic initialization (like setting a bool to YES). Move your table code to viewDidLoad.
This will usually throw errors, since the view is not ready yet.

Answer 2

TableViewGeneratorController.h
#interface TableViewGeneratorController : UIViewController
#property(nonatomic, strong) UITableView *tableView;
- (id)initWithNibName:(NSString )nibNameOrNil bundle:(NSBundle )nibBundleOrNil frame:(CGRect)frame;
- (UITableView *)getTableView;
#end
TableViewGeneratorController.m
#implementation TableViewGeneratorController
#synthesize tableView = _tableView;
- (id)initWithNibName:(NSString )nibNameOrNil bundle:(NSBundle )nibBundleOrNil frame:(CGRect)frame
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
_tableView = [[UITableView alloc]initWithFrame:frame];
_tableView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
}
return self;
}
- (UITableView *)getTableView
{
return _tableView;
}
#end
ViewController.m
TableViewGeneratorController *tableViewGeneratorController = [[TableViewGeneratorController alloc] init];
UITableView *tableView = [tableViewGeneratorController getTableView];
tableView.delegate = self;
tableView.dataSource = self;
[self.view addSubview:tableView];
[tableView reloadData];
Implement table view delegate in ViewController.m

Answer 3

initWithNibName() will never be called if you intialize the tableViewGeneratorController with init()