reorder and save UITableView - ios

Question

I parse data from a server which contains passengers details.
the passengers details are saved into Passenger class.
The main viewController contains a UITableView which loads the passengers data and allows the user to rearrange the cells order.
My question is how can I save the tables new order and load it again each time the app starts, but with new passenger details parsed from the server.
I prefer not use core data.
Here is the code:
Passenger.h
#import <Foundation/Foundation.h>
#interface Passenger : NSObject
{
NSString *name;
NSString *code;
NSString *country;
NSString *date;
}
#property (nonatomic, strong) NSString *name;
#property (nonatomic, strong) NSString *code;
#property (nonatomic, strong) NSString *country;
#property (nonatomic, strong) NSString *date;
mainViewController m
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
NSString *stringToMove = passengersArray[sourceIndexPath.row];
[passengersArray removeObjectAtIndex:sourceIndexPath.row];
[passengersArray insertObject:stringToMove atIndex:destinationIndexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
Passenger *current = [passengersArray objectAtIndex:indexPath.row];
UILabel *nameLabel = (UILabel *)[cell viewWithTag:101];
nameLabel.text = current.name;
UILabel *codeLabel = (UILabel *)[cell viewWithTag:102];
codeLabel.text = current.code;
UILabel *countryLabel = (UILabel *)[cell viewWithTag:103];
countryLabel.text = current.country;
return cell;
}

Answer 1

You can load the passenger list from a plist in form of an Array. And when you update the information you iterate through that plist array, compare, update and add new passengers to the list. Once the user has rearranged the order you save it to the plist.
Fetch
NSPropertyListFormat format;
NSString *errorDesc;
NSString * plistPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES) objectAtIndex:0];
plistPath = [plistPath stringByAppendingPathComponent:#"Passengers.plist"];
NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:plistPath];
NSArray *temp = (NSArray *)[NSPropertyListSerialization
propertyListFromData:plistXML
mutabilityOption:NSPropertyListMutableContainersAndLeaves
format:&format
errorDescription:&errorDesc];
Save
NSString *error;
NSString *plistPath;
NSString *rootPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES) objectAtIndex:0];
plistPath = [rootPath stringByAppendingPathComponent:#"Passengers.plist"];
NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:_passengersArray format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];
if(plistData)
{
[plistData writeToFile:plistPath atomically:YES];
}
else
{
NSLog(#"Error writing passengers to file %#", error);
}