Swift/MLKit：如何初始化 TextRecognizer？

Question

我试图在我的项目中使用MLKit，但我无法初始化TextRecognizer。我试过这个：

textRecognizer = TextRecognizer.textRecognizer()

给出警告：

'textRecognizer()' 已弃用：请改用textRecognizer(options:)

但是，当我尝试以这种方式初始化它时：

let options = CommonTextRecognizerOptions.init()
textRecognizer = TextRecognizer.textRecognizer(options: options)

我收到此错误：

'init()' 不可用

那我应该怎么初始化呢？

感谢您的帮助

Answer 1

从documentation 到CommonTextRecognizerOptions：

-init
不可用。在子类中使用初始化器。

因此您需要使用CommonTextRecognizerOptions 的子类。这是我发现的：

/// Configurations for a text recognizer for Latin-based languages.
TextRecognizerOptions()

/// Configurations for a text recognizer for Chinese and Latin-based languages.
ChineseTextRecognizerOptions()

/// Configurations for a text recognizer for Devanagari and Latin-based languages.
DevanagariTextRecognizerOptions()

/// Configurations for a text recognizer for Japanese and Latin-based languages.
JapaneseTextRecognizerOptions()

/// Configurations for a text recognizer for Korean and Latin-based languages.
KoreanTextRecognizerOptions()

你会这样使用它：

let options = TextRecognizerOptions() /// same thing as `TextRecognizerOptions.init()`
textRecognizer = TextRecognizer.textRecognizer(options: options)