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## com.datecs.api.universalreader
Interface UniversalReader.ButtonListener

Enclosing class:
  UniversalReader

    public static interface UniversalReader.ButtonListener

Interface definition for a callbacks to notify for button event.

Method Summary
`void` | `OnButtonStateChanged(boolean pressed)` This method is invoke when button state is changed.

Method Detail

### OnButtonStateChanged

    void OnButtonStateChanged(boolean pressed)

  This method is invoke when button state is changed.

  Parameters:
    `pressed` - current button state.

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