Equivalent Android 9-patch for iOS and Swift 3.0 (multiple stretchable areas)

ninePatchDemo.swift

    // origin
    UIImageView *unHandleImg = [[UIImageView alloc] initWithFrame:CGRectMake((SCREENWIDTH-200)/2, 100, 200, 30)];
    unHandleImg.image = [UIImage imageNamed:@"theImage"];
    [self.view addSubview:unHandleImg];

    // with stretchable
    UIImageView *handleImg = [[UIImageView alloc] initWithFrame:CGRectMake((SCREENWIDTH-200)/2, 200, 200, 30)];
    UIImage *img = [UIImage imageNamed:@"theImage"];
    // stretchable areas
    img = [img resizableImageWithCapInsets:UIEdgeInsetsMake(35, 35, 35, 35) resizingMode:UIImageResizingModeStretch];
    handleImg.image = img;
    [self.view addSubview:handleImg];