CharSequenceTransformation

Kotlin |Java

class CharSequenceTransformation : Transformation, Parcelable

kotlin.Any
↳	android.service.autofill.CharSequenceTransformation

Replaces a TextView child of a CustomDescription with the contents of one or more regular expressions (regexs).

When it contains more than one field, the fields that match their regex are added to the overall transformation result.

For example, a transformation to mask a credit card number contained in just one field would be:

new CharSequenceTransformation
      .Builder(ccNumberId, Pattern.compile("^.*(\\d\\d\\d\\d)$"), "...$1")
      .build();

But a transformation that generates a Exp: MM / YYYY credit expiration date from two fields (month and year) would be:

new CharSequenceTransformation
    .Builder(ccExpMonthId, Pattern.compile("^(\\d\\d)$"), "Exp: $1")
    .addField(ccExpYearId, Pattern.compile("^(\\d\\d\\d\\d)$"), " / $1");

Summary

Nested classes
	`Builder` Builder for `CharSequenceTransformation` objects.

Inherited constants

From class Parcelable

Int

CONTENTS_FILE_DESCRIPTOR

Descriptor bit used with describeContents(): indicates that the Parcelable object's flattened representation includes a file descriptor.

Int

PARCELABLE_WRITE_RETURN_VALUE

Flag for use with writeToParcel: the object being written is a return value, that is the result of a function such as "Parcelable someFunction()", "void someFunction(out Parcelable)", or "void someFunction(inout Parcelable)". Some implementations may want to release resources at this point.

Public methods
Int	`describeContents()`
String	`toString()`
Unit	`writeToParcel(parcel: Parcel, flags: Int)`

Properties
static Parcelable.Creator<CharSequenceTransformation!>	`CREATOR`

Public methods

describeContents

Added in API level 27

fun describeContents(): Int

Return
`Int`	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `android.os.Parcelable#CONTENTS_FILE_DESCRIPTOR`

toString

Added in API level 27

fun toString(): String

Return
`String`	a string representation of the object.

writeToParcel

Added in API level 27

fun writeToParcel(
    parcel: Parcel, 
    flags: Int
): Unit

Parameters
`dest`	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

CREATOR

Added in API level 27

static val CREATOR: Parcelable.Creator<CharSequenceTransformation!>