从plist加载图像

我正在从这样的服务器加载图像…

- (id)init {
self = [ super init ];
if (self != nil) {
    covers = [ [ NSMutableArray alloc ] init ];

    for(int i = 1; i < 6; i++) {
        NSLog(@"Loading demo image %d\n", i);
        UIImage *image = [ [ UIImage alloc ] initWithData:
                          [ NSData dataWithContentsOfURL:
                           [ NSURL URLWithString: [ NSString stringWithFormat:
                                                   @"http://www.xyz.com/1%d.png", i ] ] ]
                          ];





        [ covers addObject: image ];
    }
}
return self;

}

现在我想从plist文件而不是url加载图像。有人能告诉我怎么做吗…请帮助…