Text Capture Settings’s JSON Structure

The following data fields can be set in the JSON used to initialize SDCTextCaptureSettings.

Key	Mandatory	Type	Description
regex	true	String	Regular expression for filtering the recognized characters as a ECMAScript regular expressions pattern. Text that does not match the regular expression is ignored. By default, no regex is set. You must set a regex in order for text capture to work.
characterWhitelist	false	String	Whitelist of recognizable characters. If the white list is provided, a recognition result will never contain characters that are not contained in it. By default there is no white list and all characters will be recognized.

Note

Using a regex with a capture group will make SDCTextCapture return only the text matching the capture group. To return the full text matching the regex, use a non capturing group.

(?: foo)

Example

The following JSON can be used for capturing price labels.

{
  "regex": "\\s*\\d+.\\d{2}\\s*",
  "characterWhitelist": ""
}