Как записать объект массива в plist в iphone?

Вот код ....

-(void)dataFetching
{
NSMutableDictionary *categoryList = [[NSMutableDictionary alloc] initWithContentsOfFile:@"Give the file path"];
NSMutableArray *array =(NSMutableArray *) [categoryList valueForKey:@"write the array name here"];

/* hope u know how a table loads data from the array */

/*whenever add button is pressed on the table view cell, view would be shown with a textfield and a button, isn't it? */

/* by setting the delegate for textfield, using the textfieldDidEnterEditing: method capture the text from the textfield*/
// for example, 
NSString *testStr = @"test String"; //[textfield text];
//Now,

int lastItemIndex = [array count];
[array insertObject:testStr atIndex:lastItemIndex];
// and whenever you want you can save it on to the file like this

[categoryList writeToFile:@"Give the file path" atomically:YES];

[categoryList release];
}

Надеюсь это поможет.....