com.criteo.publisher.advancednative

Interface ImageLoader

public interface ImageLoader

Method Summary

Modifier and Type	Method and Description
void	loadImageInto(java.net.URL imageUrl, android.widget.ImageView imageView, android.graphics.drawable.Drawable placeholder) Load the image at the given URL and set it in the given image view when finished.
void	preload(java.net.URL imageUrl) Preload the image at the given URL.

Method Detail

preload

void preload(@NonNull
             java.net.URL imageUrl)
      throws java.lang.Exception

Preload the image at the given URL.

This method is called before the rendering of the native Ad and lets you start downloading images and caching them in order to have them ready to be rendered when loadImageInto(URL, ImageView, Drawable) is called.

Implementation is expected to move in a worker thread when doing long task such as network to download the image.

Parameters:

imageUrl - URL of the image to preload

Throws:

java.lang.Exception

See Also:

loadImageInto(URL, ImageView, Drawable)

loadImageInto

@UiThread
void loadImageInto(@NonNull
                             java.net.URL imageUrl,
                             @NonNull
                             android.widget.ImageView imageView,
                             @Nullable
                             android.graphics.drawable.Drawable placeholder)
                      throws java.lang.Exception

Load the image at the given URL and set it in the given image view when finished.

The given image URL is in HTTPS and represents images in PNG, WebP or JPEG format.

This method is called on the UI-thread, so you can prepare the image view as you need. Implementation is expected to move in a worker thread when doing long task such as network to download the image. Also, having a caching mechanism is recommended to minimize network calls and avoid flickering effects in your RecyclerViews.

If you're using RecyclerViews, then the implementation should be aware that an image view can be recycled and reused for another URL. This also means that a given image view may contain an old image. If you need to do any operations outside the UI-thread, you're expected to clean the state of the view by setting the given placeholder. If you're using an image loading library, it generally already takes care of that.

Parameters:

imageUrl - URL of the image to load

imageView - the image view to fill

placeholder - that you defined the CriteoMediaView

Throws:

java.lang.Exception