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CharSequenceTransformation

public final class CharSequenceTransformation
extends Object implements Transformation, Parcelable, Transformation, Parcelable

java.lang.Object
   ↳ 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

class CharSequenceTransformation.Builder

Builder for CharSequenceTransformation objects. 

Inherited constants

Fields

public static final Creator<CharSequenceTransformation> CREATOR

Public methods

int describeContents()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.

String toString()

Returns a string representation of the object.

void writeToParcel(Parcel parcel, int flags)

Flatten this object in to a Parcel.

Inherited methods

Fields

CREATOR

added in API level 27
public static final Creator<CharSequenceTransformation> CREATOR

Public methods

describeContents

added in API level 27
public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(Parcel, int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Returns
int a bitmask indicating the set of special object types marshaled by this Parcelable object instance.

toString

added in API level 27
public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Returns
String a string representation of the object.

writeToParcel

added in API level 27
public void writeToParcel (Parcel parcel, 
                int flags)

Flatten this object in to a Parcel.

Parameters
parcel Parcel: The Parcel in which the object should be written.

flags int: Additional flags about how the object should be written. May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE.