Use Xamarin.Forms resouce/FontImageSourceĪs we want to be able to load FontImageSource and Xamarin.Forms resources as well however, we need to go another route.
For failed image loading only, use the Error method. If you want a general placeholder (shows the image also during download), use the Placeholder method. builder.Placeholder(_Logo_Base_Blue_1024px_pad25).Into(imageView) īuilder.Error(_Logo_Base_Blue_1024px_pad25).Into(imageView) Īs you can see, the RequestBuilder has already a placeholder mechanism in place.
#Set bitmap to imageviewer xamarin android
easiest way - add the image to Android resources. Public bool Build(ImageView imageView, ImageSource source, RequestBuilder builder, CancellationToken token) Public GlideWithAndroidResourcePlaceholder() To do so, we just need to create a custom implementation of an IGlideHandler in the Android project, which will then be called by the GlideExtensions implementation: public class GlideWithAndroidResourcePlaceholder : IGlideHandler
#Set bitmap to imageviewer xamarin how to
Let’s have a look at how to load an Android resource as a placeholder first (because it is the easiest way). On a side note, I tried to use the existing mechanism of implementing an IGlideHandler for these purposes, but due to timing issues I never was able to load these kinds of placeholders and I moved on by extending the GlideExtensions class. But if you want to load an image from a Xamarin.Forms resource or even a from a font, we’ll need to extend the GlideExtensions class a little bit. You could just implement a custom hook into the GlideExtensions class of glidex.forms (I’ll show you that one as well).
If you want to load a placeholder that is stored in the resources of your Android project – there is no need. Like before with, I learned about that library because I am substituting my former image caching solution with Akavache. He made the Xamarin.Android Binding library as well as the Xamarin.Forms implementation. Luckily, Jonathan Peppers from Microsoft has a passion to improve Xamarin.Android, and Xamarin.Forms takes a big advantage from that as well. The glidex.forms library is a Xamarin.Forms implementation of Glide, which is one of the quasi standards for imaging on Android (it is even recommended by Google).
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