不应该直接将图标作为字符串进行比较，应该使用相应的比较函数。例如，在Android中，可以使用以下方法比较两个图标是否相等：

public static boolean areDrawablesIdentical(Drawable drawable1, Drawable drawable2) {
    if (drawable1 == drawable2) {
        return true;
    }
    if (drawable1 == null || drawable2 == null) {
        return false;
    }
    if (drawable1.getIntrinsicWidth() != drawable2.getIntrinsicWidth()) {
        return false;
    }
    if (drawable1.getIntrinsicHeight() != drawable2.getIntrinsicHeight()) {
        return false;
    }
    Bitmap bitmap1 = getBitmap(drawable1);
    Bitmap bitmap2 = getBitmap(drawable2);
    return bitmap1.sameAs(bitmap2);
}

public static Bitmap getBitmap(Drawable drawable) {
    Bitmap bitmap;
    if (drawable instanceof BitmapDrawable) {
        bitmap = ((BitmapDrawable) drawable).getBitmap();
    } else {
        int width = drawable.getIntrinsicWidth();
        int height = drawable.getIntrinsicHeight();
        bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
        drawable.draw(canvas);
    }
    return bitmap;
}

这个示例代码可以比较两个Drawable对象是否相等，而不是将它们作为字符串进行比较。