PackageIdentifier
public
class
PackageIdentifier
extends Object
java.lang.Object | |
↳ | android.app.appsearch.PackageIdentifier |
This class represents a uniquely identifiable package.
Summary
Public constructors | |
---|---|
PackageIdentifier(String packageName, byte[] sha256Certificate)
Creates a unique identifier for a package. |
Public methods | |
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boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one. |
String
|
getPackageName()
|
byte[]
|
getSha256Certificate()
|
int
|
hashCode()
Returns a hash code value for the object. |
Inherited methods | |
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Public constructors
PackageIdentifier
public PackageIdentifier (String packageName, byte[] sha256Certificate)
Creates a unique identifier for a package.
SHA-256 certificate digests for a signed application can be retrieved with the apksigner tool that is part of the
Android SDK build tools. Use apksigner verify --print-certs path/to/apk.apk
to
retrieve the SHA-256 certificate digest for the target application. Once retrieved, the
SHA-256 certificate digest should be converted to a byte[]
by decoding it in base16:
new android.content.pm.Signature(outputDigest).toByteArray();
Parameters | |
---|---|
packageName |
String : Name of the package.
This value cannot be null . |
sha256Certificate |
byte : SHA-256 certificate digest of the package.
This value cannot be null . |
Public methods
equals
public boolean equals (Object obj)
Indicates whether some other object is "equal to" this one.
The equals
method implements an equivalence relation
on non-null object references:
- It is reflexive: for any non-null reference value
x
,x.equals(x)
should returntrue
. - It is symmetric: for any non-null reference values
x
andy
,x.equals(y)
should returntrue
if and only ify.equals(x)
returnstrue
. - It is transitive: for any non-null reference values
x
,y
, andz
, ifx.equals(y)
returnstrue
andy.equals(z)
returnstrue
, thenx.equals(z)
should returntrue
. - It is consistent: for any non-null reference values
x
andy
, multiple invocations ofx.equals(y)
consistently returntrue
or consistently returnfalse
, provided no information used inequals
comparisons on the objects is modified. - For any non-null reference value
x
,x.equals(null)
should returnfalse
.
An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.
Parameters | |
---|---|
obj |
Object : This value may be null . |
Returns | |
---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
getPackageName
public String getPackageName ()
Returns | |
---|---|
String |
This value cannot be null . |
getSha256Certificate
public byte[] getSha256Certificate ()
Returns | |
---|---|
byte[] |
This value cannot be null . |
hashCode
public int hashCode ()
Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap
.
The general contract of hashCode
is:
- Whenever it is invoked on the same object more than once during
an execution of a Java application, the
hashCode
method must consistently return the same integer, provided no information used inequals
comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. - If two objects are equal according to the
equals
method, then calling thehashCode
method on each of the two objects must produce the same integer result. - It is not required that if two objects are unequal
according to the
equals
method, then calling thehashCode
method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns | |
---|---|
int |
a hash code value for this object. |