objective-c - IOS11 UIContextualAction 放置图片颜色文字

Question

防止图片如何恢复真实颜色我现在放置的图片都是白色

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath API_AVAILABLE(ios(11.0))
{

 UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal title:nil handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL))
    {
        NSLog(@"------------------>%@",sourceView);
        completionHandler (YES);
    }];

    deleteRowAction.image = [UIImage imageNamed:@"heart"];

    UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction]];
         return config;


    return nil;

}

Answer 1

RSSReaderMaker 解决方案适用于 Swift 5 的小更新:

class ImageWithoutRender: UIImage {
    override func withRenderingMode(_ renderingMode: UIImage.RenderingMode) -> UIImage {
        return self
    }
}

并且在 trailingSwipeActionsConfigurationForRowAt 或 leadingSwipeActionsConfigurationForRowAt

使用:

if let cgImageX =  UIImage(named: "x_blue_big")?.cgImage {
     action.image = ImageWithoutRender(cgImage: cgImageX, scale: UIScreen.main.nativeScale, orientation: .up)
}