ViewUtils.java 文件源码

/**
 * Get bitmap from resource
 */
public static Bitmap getBitmapFromResource(Context context, int drawableId) {
    Drawable drawable = ContextCompat.getDrawable(context, drawableId);
    if (drawable instanceof BitmapDrawable) {
        return BitmapFactory.decodeResource(context.getResources(), drawableId);
    } else if (drawable instanceof VectorDrawable) {
        return getBitmapFromResource((VectorDrawable) drawable);
    } else {
        throw new IllegalArgumentException("unsupported drawable type");
    }
}