Recipe: Detecting Misspelling in a UITextView
The UITextChecker class provides a way to automatically scan text for misspellings. To use this class, you must first set the target language—for example, en for English, en_US for U.S. English, or fr_CA for Canadian French. The language codes use a combination of ISO 639-1 and optional ISO 3166-1 regions. So, while you can choose to use a general English dictionary (en), you can also differentiate between usage in the United States (en_US), Australia (en_AU), and the United Kingdom (en_GB). Query UITextChecker for an array of available languages from which to pick.
The UITextChecker class also allows you to learn new words (learnWord:) and forget words (unlearnWord:) to customize the onboard dictionary ...
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