Xamarin Forms IconImageSource:

On Android Toolbar image is shown correctly, on iOS a white image is shown. How can I fix this? I added file to Resources folder and set build Action to BundleResource.

If I change filename to non excisting file, image is not shown at all. I tried changing extension to JPG, same result, also a white image is shown.

I used this code snippit.

        ToolbarItem toolbarItemSearch = new ToolbarItem { IconImageSource = ImageSource.FromFile("searchIcon.png") };
        ToolbarItems.Add(toolbarItemSearch);

CodePudding user response：

iOS has tinting the ToolbarItems by default , the color is blue/white .

To solve it we need to create a custom renderer for NavigationPage , and set the TintColor to transparent , and set the image with another rendering mode .

Sample code

[assembly: ExportRenderer(typeof(NavigationPage), typeof(MyRenderer))]
namespace FormsApp.iOS
{
    class MyRenderer : NavigationRenderer
    {
        public override void PushViewController(UIViewController viewController, bool animated)
        {
            base.PushViewController(viewController, animated);

            var currentPage = (this.Element as Xamarin.Forms.NavigationPage)?.CurrentPage;

            if (this.NavigationBar == null || currentPage == null)
                return;

            var buttonItems = TopViewController.NavigationItem.RightBarButtonItems;

            foreach (var button in buttonItems)
            {
                button.Image = button.Image.ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);
                button.TintColor = UIColor.Clear;
            }
        }
    }
}

Refer to