val views = RemoteViews(context?.packageName, R.layout.sample_widget)

views.setImageViewUri(R.id.imageView, item.imageURL)

/**
 * Equivalent to calling {@link ImageView#setImageURI(Uri)}
 *
 * @param viewId The id of the view whose drawable should change
 * @param uri The Uri for the image
 */
public void setImageViewUri(int viewId, Uri uri) {
    setUri(viewId, "setImageURI", uri);
}

/**
 * Sets the content of this ImageView to the specified Uri.
 * Note that you use this method to load images from a local Uri only.
 * <p/>
 * To learn how to display images from a remote Uri see: <a href="https://developer.android.com/topic/performance/graphics/index.html">Handling Bitmaps</a>
 * <p/>

 * <p class="note">This does Bitmap reading and decoding on the UI
 * thread, which can cause a latency hiccup.  If that's a concern,
 * consider using {@link #setImageDrawable(Drawable)} or
 * {@link #setImageBitmap(android.graphics.Bitmap)} and
 * {@link android.graphics.BitmapFactory} instead.</p>

 * <p class="note">On devices running SDK < 24, this method will fail to
 * apply correct density scaling to images loaded from
 * {@link ContentResolver#SCHEME_CONTENT content} and
 * {@link ContentResolver#SCHEME_FILE file} schemes. Applications running
 * on devices with SDK >= 24 <strong>MUST</strong> specify the
 * {@code targetSdkVersion} in their manifest as 24 or above for density
 * scaling to be applied to images loaded from these schemes.</p>
 *
 * @param uri the Uri of an image, or {@code null} to clear the content
 */
@android.view.RemotableViewMethod(asyncImpl="setImageURIAsync")
public void setImageURI(@Nullable Uri uri) {
    if (mResource != 0 || (mUri != uri && (uri == null || mUri == null || !uri.equals(mUri)))) {
        updateDrawable(null);
        mResource = 0;
        mUri = uri;

        final int oldWidth = mDrawableWidth;
        final int oldHeight = mDrawableHeight;

        resolveUri();

        if (oldWidth != mDrawableWidth || oldHeight != mDrawableHeight) {
            requestLayout();
        }
        invalidate();
    }
}

val views = RemoteViews(context?.packageName, R.layout.sample_widget)

// 画像URLからBitmapに変換する処理
val bitmap = getBitmapFromUrl(item.imageURL)
views.setImageViewBitmap(R.id.imageView, bitmap)