Android APIs
public class

Signature

extends Object
implements Parcelable
java.lang.Object
   ↳ android.content.pm.Signature

Class Overview

Opaque, immutable representation of a signature associated with an application package.

Summary

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Inherited Constants
From interface android.os.Parcelable
Fields
public static final Creator<Signature> CREATOR
Public Constructors
Signature(byte[] signature)
Create Signature from an existing raw byte array.
Signature(String text)
Create Signature from a text representation previously returned by toChars() or toCharsString().
Public Methods
int describeContents()
Describe the kinds of special objects contained in this Parcelable's marshalled representation.
boolean equals(Object obj)
Compares this instance with the specified object and indicates if they are equal.
int hashCode()
Returns an integer hash code for this object.
byte[] toByteArray()
char[] toChars(char[] existingArray, int[] outLen)
Encode the Signature as ASCII text in to an existing array.
char[] toChars()
Encode the Signature as ASCII text.
String toCharsString()
Return the result of toChars() as a String.
void writeToParcel(Parcel dest, int parcelableFlags)
Flatten this object in to a Parcel.
[Expand]
Inherited Methods
From class java.lang.Object
From interface android.os.Parcelable

Fields

public static final Creator<Signature> CREATOR

Added in API level 1

Public Constructors

public Signature (byte[] signature)

Added in API level 1

Create Signature from an existing raw byte array.

public Signature (String text)

Added in API level 1

Create Signature from a text representation previously returned by toChars() or toCharsString(). Signatures are expected to be a hex-encoded ASCII string.

Parameters
text hex-encoded string representing the signature
Throws
IllegalArgumentException when signature is odd-length

Public Methods

public int describeContents ()

Added in API level 1

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

Returns
  • a bitmask indicating the set of special object types marshalled by the Parcelable.

public boolean equals (Object obj)

Added in API level 1

Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.

The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.

The general contract for the equals and hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.

Parameters
obj the object to compare this instance with.
Returns
  • true if the specified object is equal to this Object; false otherwise.

public int hashCode ()

Added in API level 1

Returns an integer hash code for this object. By contract, any two objects for which equals(Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Returns
  • this object's hash code.

public byte[] toByteArray ()

Added in API level 1

Returns
  • the contents of this signature as a byte array.

public char[] toChars (char[] existingArray, int[] outLen)

Added in API level 1

Encode the Signature as ASCII text in to an existing array.

Parameters
existingArray Existing char array or null.
outLen Output parameter for the number of characters written in to the array.
Returns
  • Returns either existingArray if it was large enough to hold the ASCII representation, or a newly created char[] array if needed.

public char[] toChars ()

Added in API level 1

Encode the Signature as ASCII text.

public String toCharsString ()

Added in API level 1

Return the result of toChars() as a String.

public void writeToParcel (Parcel dest, int parcelableFlags)

Added in API level 1

Flatten this object in to a Parcel.

Parameters
dest The Parcel in which the object should be written.
parcelableFlags Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.