+ (UIImage *)imageNamed:(NSString *)name ofBundle:(NSString *)bundleName {

    static NSMutableDictionary *loadedObjectDict = nil;

    if (!loadedObjectDict) {

        loadedObjectDict = [[NSMutableDictionary alloc] init];

    }

    NSString *keyString = [NSString stringWithFormat:@"%@%@", bundleName, name];

    RCDLiveWeakRef *ref = loadedObjectDict[keyString];

    if (ref.weakRef) {

        return ref.weakRef;

    }

    UIImage *image = nil;

    NSString *image_name = [NSString stringWithFormat:@"%@.png", name];

    NSString *resourcePath = [[NSBundle mainBundle] resourcePath];

    NSString *bundlePath = [resourcePath stringByAppendingPathComponent:bundleName];

    NSString *image_path = [bundlePath stringByAppendingPathComponent:image_name];

    // NSString* path = [[[[NSBundle mainBundle] resourcePath]

    // stringByAppendingPathComponent:bundleName]stringByAppendingPathComponent:[NSString

    // stringWithFormat:@"%@.png",name]];

    // image = [UIImage imageWithContentsOfFile:image_path];

    image = [[UIImage alloc] initWithContentsOfFile:image_path];

    [loadedObjectDict setObject:[RCDLiveWeakRef refWithObject:image] forKey:keyString];

    return image;

}

ios 加载.bundle文件里的图片