How do I append a new item to a plist?

Question

In my iPhone app, I have two plist files to store \"Themes\". One is a read-only file containing default themes, and one contains custom Themes that the user has created. I\

Answer 1

This is how I am appending data to the plist:

    NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) 
{
    NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
    [array addObject:countdownLabel.text];
    [array writeToFile:[self dataFilePath] atomically:YES];
    [array release];
}
else
{
    NSArray *array = [NSArray arrayWithObject:countdownLabel.text];
    [array writeToFile:filePath atomically:YES];
}