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POLoading core data into array, then populating table view, reordering array's objects doesnt persist
 

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  1. POLoading core data into array, then populating table view, reordering array's objects doesnt persist
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    <p>First let me tell you what im trying to do. Load data into array(from core data entity), populate table view, if user wants, reorder cells and update the array. </p> <p>Thats it. </p> <p>I have found my problem, i just dont know how to fix it:</p> <p>I am loading my Entities data/attributes into an array and populating my tableview with the data (BELOW BEHOLDS THE PROBLEM):</p> <pre><code>-(void)viewWillAppear:(BOOL)animated{ if (self.context == nil) { self.context = [(RootAppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext]; } NSFetchRequest *request = [[NSFetchRequest alloc]init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"HandgunAmmo" inManagedObjectContext:self.context]; [request setEntity:entity]; NSError *error; //PROBLEM!!! the 2 lines below this. NSMutableArray *array = [[self.context executeFetchRequest:request error:&amp;error] mutableCopy]; [self setTableArray:array]; [self.ammoTable reloadData]; [super viewWillAppear:YES]; } </code></pre> <p>SO at this point the table view is loaded with data (accounting for <code>cellForRow</code> being called)</p> <p>The user moves a few cells around, and i update the array as follows:</p> <pre><code>- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath { // fetch the object at the row being moved NSString *r = [self.tableArray objectAtIndex:fromIndexPath.row]; // remove the original from the data structure [self.tableArray removeObjectAtIndex:fromIndexPath.row]; // insert the object at the target row [self.tableArray insertObject:r atIndex:toIndexPath.row]; [self.ammoTable reloadData]; } </code></pre> <p>As you can see the code for reordering the array should work. </p> <p>But, in the <code>viewWillAppear</code> method, I am loading the entities attributes into the array again and using it to populate the table view which is the problem. When i update the array, its not updating the order of the objects inside of the entity. Does anyone know how to update that? I would really appreciate it! </p> <p>Thank you!</p>
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    1. USKurt Moyer
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