Question

I have a custom plist file which contains dictionaries. Each dictionary contains information about one car:

     <key>Ford</key>
<dict>
    <key>name</key>
    <string>Ford</string>
    <key>color</key>
    <string>green</string>
    <key>price</key>
    <integer>45000</integer>
</dict

    <key>Toyota</key>
<dict>
    <key>name</key>
    <string>Toyota</string>
    <key>color</key>
    <string>blue</string>
    <key>price</key>
    <integer>40000</integer>
</dict

    <key>BMW</key>
<dict>
    <key>name</key>
    <string>BMW</string>
    <key>color</key>
    <string>blue</string>
    <key>price</key>
    <integer>40000</integer>
</dict>

I also have an UITableView and I fill it with some cars from this plist.

 NSEnumerator *enumerator = [dictionary objectEnumerator];
    id returnValue;


    while ((returnValue = [enumerator nextObject])) 
    {

        if ([[returnValue valueForKey:@"color"]isEqualToString:@"blue")
        {  
            [array addObject:[returnValue valueForKey:@"name"]];
        }

Question: When I get an UITableView with some cars in it, how can I sort them by price now? For example, BMW is cheaper than Ford, so it should be in the first cell and Ford must be in a second cell. I know that Apple has already created easy ways to sort arrays but how can I use it here ? Thanks !
Max

Answer 1

Try with this:

NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"price"  ascending:YES];
[array sortUsingDescriptors:[NSArray arrayWithObjects:descriptor,nil]];