Call Multiple ViewController with UIViewController - objective-c

Question

In my project I have tableView with 10 cells. And in didSelectRowAtIndexPath all cells have multiple ViewController (files) so, my didSelectRowAtIndexPath looks like
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row == 0) {
CallViewController *viewc = [[CallViewController alloc] initWithNibName:#"CallViewController" bundle:nil];
[self.navigationController pushViewController:viewc animated:YES];
}else if(indexPath.row == 1) {
BirthdayViewController *viewc = [[BirthdayViewController alloc] initWithNibName:#"BirthdayViewController" bundle:nil];
[self.navigationController pushViewController:viewc animated:YES];
}
so I don't want these conditions
I want my code be clean

Answer 1

I would suggest you to have an array that contains the Class object of your class and then create object and push like
//view did load
mutableArr = [[NSMutableArray alloc] init];
[mutableArr addObject:[CallViewController class]];
[mutableArr addObject:[BirthdayViewController class]];
....
....
Then in your
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row < [mutableArr count]) {
Class *obj = [mutableArr objectAtIndex:indexPath.row];
UIViewController *controller = [[objc alloc] initWithNibName:NSStringFromClass(obj) bundle:nil];
[self.navigationController pushViewController:controller animated:YES];
}
}
OR if this is looking more weird then you can do like this
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UIViewController *controller = nil;
switch(indexPath.row) {
case 0:
controller = [[CallViewController alloc] initWithNibName:#"CallViewController" bundle:nil];
break;
case 1;
controller = [[BirthdayViewController alloc] initWithNibName:#"BirthdayViewController " bundle:nil];
break;
}
[self.navigationController pushViewController:controller animated:YES];
}

Answer 2

What is your underlying data model for tableview? If you could add additional attribute as ViewController Class Name you could do something like
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *row = [rowData objectAtIndex:indexPath.row];
Class viewControllerClass =
NSClassFromString([row objectForKey:#"viewControllerClassName"]);
//Default VC init looks for nib file named as VC afaik, if not, you could
//add another attribute with init selector name
UIViewController *viewController =
[[viewControllerClass alloc] init];
[self.navigationController pushViewController:viewController animated:YES];
}

Answer 3

You can create array of strings corresponding to file names and use NSClassFromString function to allocate view controllers
NSArray *viewControllers = [NSArray arrayWithObjects:#"VC1", #"VC2", #"VC3", nil];
id viewController = [[NSClassFromString([viewControllers objectAtIndex:indexPath.row]) alloc] initWithNibName:[viewControllers objectAtIndex:indexPath.row] bundle:nil];
[[self navigationController] pushViewController:viewController animated:YES];
[viewController release];

Answer 4

You can do this:
Add all your classes to NSArray, and select the correct class by the indexPath.row.
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSArray * conrollersClasses =#[[CallViewController class],[BirthdayViewController class]];
UIViewController *controller = [[conrollersClasses[indexPath.row] alloc] init];
[[self navigationController] controller animated:YES];
}