i cannot delete rows in my master view controller - ios

Question

cannot delete the rows, am getting terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[__NSCFArray removeObjectAtIndex:]: mutating method sent to immutable object
i have the following:
#import <UIKit/UIKit.h>
#class CSDetailViewController;
#interface CSMasterViewController : UITableViewController
#property (strong, nonatomic) CSDetailViewController *detailViewController;
#property (strong, nonatomic) NSMutableArray *kryeministrat;
#end
and the following at implementation:
#import "CSMasterViewController.h"
#import "CSDetailViewController.h"
#implementation CSMasterViewController
- (void)awakeFromNib
{
self.clearsSelectionOnViewWillAppear = NO;
self.preferredContentSize = CGSizeMake(320.0, 600.0);
[super awakeFromNib];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.navigationItem.leftBarButtonItem = self.editButtonItem;
NSString *path = [[NSBundle mainBundle]pathForResource:#"KryeministratList" ofType:#"plist"];
NSDictionary *kryeministratInfo = [NSDictionary dictionaryWithContentsOfFile:path];
self.kryeministrat = [kryeministratInfo objectForKey:#"kryeministrat"];
self.detailViewController = (CSDetailViewController *) [[self.splitViewController.viewControllers lastObject] topViewController];
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.kryeministrat count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
NSDictionary *kryeministrat = self.kryeministrat[indexPath.row];
cell.textLabel.text = kryeministrat[#"name"];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *kryeministrat = self.kryeministrat[indexPath.row];
NSString *urlString = kryeministrat[#"url"];
self.detailViewController.detailItem = urlString;
}
- (void)tableView:(UITableView *)tableView
commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
forRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.kryeministrat removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
withRowAnimation:UITableViewRowAnimationAutomatic];
}
#end

Answer 1

from your exception, you should look into this code:
NSDictionary *kryeministratInfo = [NSDictionary dictionaryWithContentsOfFile:path];
self.kryeministrat = [kryeministratInfo objectForKey:#"kryeministrat"];
Although property kryeministrat is declared as NSMutableArray , kryeministratInfo is NSDictionary. It means the values in the kryeministratInfo are all immutable.
SO you can do like:
NSDictionary *kryeministratInfo = [NSDictionary dictionaryWithContentsOfFile:path];
self.kryeministrat = [NSMutableArray arrayWithArray:[kryeministratInfo objectForKey:#"kryeministrat"]];