Added in API level 29

TextSelectionEvent

class TextSelectionEvent : TextClassifierEvent, Parcelable
kotlin.Any
   ↳ android.view.textclassifier.TextClassifierEvent
   ↳ android.view.textclassifier.TextClassifierEvent.TextSelectionEvent

This class represents events that are related to the smart text selection feature.

// User started a selection. e.g. "York" in text "New York City, NY".
      new TextSelectionEvent.Builder(TYPE_SELECTION_STARTED)
          .setEventContext(classificationContext)
          .setEventIndex(0)
          .build();
 
      // System smart-selects a recognized entity. e.g. "New York City".
      new TextSelectionEvent.Builder(TYPE_SMART_SELECTION_MULTI)
          .setEventContext(classificationContext)
          .setResultId(textSelection.getId())
          .setRelativeWordStartIndex(-1) // Goes back one word to "New" from "York".
          .setRelativeWordEndIndex(2)    // Goes forward 2 words from "York" to start of ",".
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setEventIndex(1)
          .build();
 
      // User resets the selection to the original selection. i.e. "York".
      new TextSelectionEvent.Builder(TYPE_SELECTION_RESET)
          .setEventContext(classificationContext)
          .setResultId(textSelection.getId())
          .setRelativeSuggestedWordStartIndex(-1) // Repeated from above.
          .setRelativeSuggestedWordEndIndex(2)    // Repeated from above.
          .setRelativeWordStartIndex(0)           // Original selection is always at (0, 1].
          .setRelativeWordEndIndex(1)
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setEventIndex(2)
          .build();
 
      // User modified the selection. e.g. "New".
      new TextSelectionEvent.Builder(TYPE_SELECTION_MODIFIED)
          .setEventContext(classificationContext)
          .setResultId(textSelection.getId())
          .setRelativeSuggestedWordStartIndex(-1) // Repeated from above.
          .setRelativeSuggestedWordEndIndex(2)    // Repeated from above.
          .setRelativeWordStartIndex(-1)          // Goes backward one word from "York" to
          "New".
          .setRelativeWordEndIndex(0)             // Goes backward one word to exclude "York".
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setEventIndex(3)
          .build();
 
      // Smart (contextual) actions (at indices, 0, 1, 2) presented to the user.
      // e.g. "Map", "Ride share", "Explore".
      new TextSelectionEvent.Builder(TYPE_ACTIONS_SHOWN)
          .setEventContext(classificationContext)
          .setResultId(textClassification.getId())
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setActionIndices(0, 1, 2)
          .setEventIndex(4)
          .build();
 
      // User chooses the "Copy" action.
      new TextSelectionEvent.Builder(TYPE_COPY_ACTION)
          .setEventContext(classificationContext)
          .setResultId(textClassification.getId())
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setEventIndex(5)
          .build();
 
      // User chooses smart action at index 1. i.e. "Ride share".
      new TextSelectionEvent.Builder(TYPE_SMART_ACTION)
          .setEventContext(classificationContext)
          .setResultId(textClassification.getId())
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setActionIndices(1)
          .setEventIndex(5)
          .build();
 
      // Selection dismissed.
      new TextSelectionEvent.Builder(TYPE_SELECTION_DESTROYED)
          .setEventContext(classificationContext)
          .setResultId(textClassification.getId())
          .setEntityTypes(textClassification.getEntity(0))
          .setScore(textClassification.getConfidenceScore(entityType))
          .setEventIndex(6)
          .build();
  

Summary

Nested classes

Builder class for TextSelectionEvent.

Inherited constants
Public methods
Int

Returns the relative word (exclusive) index of the end of the smart selection.

Int

Returns the relative word index of the start of the smart selection.

Int

Returns the relative word (exclusive) index of the end of the selection.

Int

Returns the relative word index of the start of the selection.

Unit
writeToParcel(dest: Parcel, flags: Int)

Inherited functions
Properties
static Parcelable.Creator<TextClassifierEvent.TextSelectionEvent!>

Public methods

getRelativeSuggestedWordEndIndex

Added in API level 29
fun getRelativeSuggestedWordEndIndex(): Int

Returns the relative word (exclusive) index of the end of the smart selection.

getRelativeSuggestedWordStartIndex

Added in API level 29
fun getRelativeSuggestedWordStartIndex(): Int

Returns the relative word index of the start of the smart selection.

getRelativeWordEndIndex

Added in API level 29
fun getRelativeWordEndIndex(): Int

Returns the relative word (exclusive) index of the end of the selection.

getRelativeWordStartIndex

Added in API level 29
fun getRelativeWordStartIndex(): Int

Returns the relative word index of the start of the selection.

writeToParcel

Added in API level 29
fun writeToParcel(
    dest: Parcel,
    flags: Int
): Unit
Parameters
dest Parcel: The Parcel in which the object should be written. This value cannot be null.
flags Int: Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE. Value is either 0 or a combination of android.os.Parcelable#PARCELABLE_WRITE_RETURN_VALUE, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES

Properties