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透過集合功能整理內容 你可以依據偏好儲存及分類內容。

let place: GMSPlace

// Icon image URL
let url = URL(string: place.iconImageUrl)
DispatchQueue.global().async {
    guard let url = url,
        let imageData = try? Data(contentsOf: url) else {
      print("Could not get image")
      return
    }
    DispatchQueue.main.async {
      let iconImage = UIImage(data: iconImageData)

      // Icon image background color
      let iconBackgroundView = UIView(frame: .zero)
      iconBackgroundView.backgroundColor = place.iconBackgroundColor

      // Change icon image color to white
      let templateImage = iconImage.imageWithRenderingMode(UIImageRenderingModeAlwaysTemplate)
      imageView.image = templateImage
      imageView.tintColor = UIColor.white
    }
}

GMSPlace *place;

dispatch_async(dispatch_get_global_queue(0, 0), ^{
  // Icon image URL
  NSData * iconImageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString: place.iconImageUrl]];
      if (!iconImageData)
          return;
      dispatch_async(dispatch_get_main_queue(), ^{
        UIImage *iconImage = [UIImage imageWithData:iconImageData];

        // Icon image background color
        UIView *iconBackgroundView = [[UIView alloc] initWithFrame:CGRectZero];
        [iconBackgroundView setBackgroundColor:place.iconBackgroundColor];

        // Change icon image color to white
        iconImage = [iconImage imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
        [imageView setTintColor:[UIColor whiteColor]];
      });
});