如何检查从Adobe Air应用程序安装的Flash Player？

Question

我有一个AIR应用程序，需要检查Windows上是否安装了Flash Player。我尝试通过Capabilities.version方法检查，但它没有解决......

// Create the database connection
$host = '127.0.0.1';
$dbname = 'test';
$username = 'root';
$password = '';
$charset = 'utf8';
$collate = 'utf8_unicode_ci';
$dsn = "mysql:host=$host;dbname=$dbname;charset=$charset";
$options = [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_PERSISTENT => false,
    PDO::ATTR_EMULATE_PREPARES => false,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES $charset COLLATE $collate"
];

$db = new PDO($dsn, $username, $password, $options);

// Create the data mapper instance
$bookMapper = new BookMapper($db);

// Create a new book entity
$book = new BookEntity();
$book->setTitle('Harry Potter');
$book->setPrice(29.99);
$book->setBookCategoryId(BookCategoryEntity::FANTASY);

// Insert the book entity
$bookId = $bookMapper->insert($book);

// Get the saved book
$newBook = $bookMapper->getById($bookId);
var_dump($newBook);

// Find all fantasy books
$fantasyBooks = $bookMapper->findByBookCategoryId(BookCategoryEntity::FANTASY);
var_dump($fantasyBooks);

我尝试使用HTMLLoader.swfCapability，但出于某种原因，它无法正常工作...始终显示已安装......

trace(Capabilities.version); // shows Adobe AIR version

如何从AIR应用程序中检测PC上是否安装了Flash Player？