Xamarin Image not loading from a given local machine path-CodePudding

I am storing a picture and binding it's path to a property called ImageUrl. when the url is set, the image in the form does not load. what could be the problem ? here is some code

    public class ImageRecord{
    public string ImagePath { get; set; }
    
    public Image Image { get; set; }
    public void SetImage( string path) {

        ImagePath = path;

        var bitmap = ImageSource.FromFile(ImagePath );

        Image = new Image() {
            Source = bitmap,
            Margin = new Thickness(10)
        };
    }

Here is the designer in XAML

               <Image Grid.Column="0" WidthRequest="80" HeightRequest="80" x:DataType="DataObjects:ImageRecord">
                 <Image.Source>
                   <FileImageSource File="{Binding ImagePath}" />
                 </Image.Source>
               </Image>
            </Grid>

I also tried to set the Source="the path of the image" directly from the Image tag but no good. The image is downloaded as byte[], and then is stored on the device(Android).

CodePudding user response：

If you load an Image from a byte[] array in the Xamarin.Forms, you can try the following code:

c# code:

byte[] bitmapData = ...;
ImageSource imageSource= ImageSource.FromStream(() => new MemoryStream(bitmapData));

PlayerImage.Source = imageSource;//binding in code

The xaml code:

<Image x:Name="PlayerImage"  WidthRequest="25" HeightRequest="25"/>

Or binding in xaml

<image Source="{Binding imageSource}"/>

In addition, you can also use Xamarin Community Toolkit ByteArrayToImageSourceConverter to achieve this, which is a converter that allows the user to convert an incoming value from byte array and returns an object of type ImageSource. This object can then be used as the Source of an Image control.

Please refer the following code:

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:xct="http://xamarin.com/schemas/2020/toolkit"
             x:Class="MyLittleApp.MainPage">
    <ContentPage.Resources>
         <ResourceDictionary>
             <xct:ByteArrayToImageSourceConverter x:Key="ByteArrayToImageSourceConverter" />
         </ResourceDictionary>
    </ContentPage.Resources>

    <StackLayout>

        <Image Source="{Binding MyByteArray, Converter={StaticResource ByteArrayToImageSourceConverter}}" />

    </StackLayout>
</ContentPage>

You can also check the following threads:

Images saved in database are not displaying in the Home.xaml page in Xamarin Forms app