Bogdan Bogdanov Bogdan Bogdanov - 1 year ago 50
iOS Question

Delete from table and remove file

I try to remove the file but when I use "indexPath.row" to get the file name it sends me always 0...

This is my code:

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
NSError *error = nil;
NSFileManager *manager = [NSFileManager defaultManager];
NSString *stringToPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/examples/"];
NSString *stringToFile = [NSString stringWithFormat:@"%@/%@.extension", stringToPath, [self.examples objectAtIndex:indexPath.row]];
[manager removeItemAtPath:[NSHomeDirectory() stringByAppendingPathComponent:stringToFile] error:&error];
NSLog(@"no error");
NSLog(@"%@", error);
[self.manageObjectContext deleteObject:[self.examples objectAtIndex:indexPath.row]];
[self.manageObjectContext save:nil];
NSFetchRequest *fetchReq = [NSFetchRequest fetchRequestWithEntityName:@"Examples"];
self.examples = [self.manageObjectContext executeFetchRequest:fetchReq error:&error];

[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view

This is the error when I use
[self.examples objectAtIndex:indexPath.row]];

Error Domain=NSCocoaErrorDomain Code=4 "The operation couldn’t be completed.
(Cocoa error 4.)" UserInfo=0xb92af90 {NSUnderlyingError=0xb92edb0 "The operation couldn’t be completed.
No such file or directory", NSFilePath=.../Application Support/iPhone Simulator/7.0.3/Applications/8A5B551A-79A1-40E6-B1A4-C948D9F961D0/Documents/example/<Examples: 0xa2b3ef0> (entity:
Examples; id: 0xa2b0310 <x-coredata:/6871E31A-1253-4195-A84D-61C71B002B72/Songs/p21> ;
data: {
name = "Example name to delete";
}).extension, NSUserStringVariant=(

Answer Source

I get filename like this:

NSArray *fileName = [self.examples valueForKey:@"name"];
NSString *fileName2 = [fileName objectAtIndex:indexPath.row];