LauncherIcons.java 文件源码

/**
 * Returns a bitmap suitable for the all apps view.
 */
public static Bitmap createIconBitmap(Drawable icon, Context context) {
    float scale = 1f;
    if (AndroidVersion.isAtLeastOreo() &&
            icon instanceof AdaptiveIconDrawable) {
        scale = ShadowGenerator.getScaleForBounds(new RectF(0, 0, 0, 0));
    }
    Bitmap bitmap =  createIconBitmap(icon, context, scale);
    if (AndroidVersion.isAtLeastOreo() &&
            icon instanceof AdaptiveIconDrawable) {
        bitmap = ShadowGenerator.getInstance(context).recreateIcon(bitmap);
    }
    return bitmap;
}