Summary: Methods | Inherited Methods

PackageInfoCompat

Kotlin |Java

public final class PackageInfoCompat
extends Object

java.lang.Object
↳	androidx.core.content.pm.PackageInfoCompat

Helper for accessing features in PackageInfo.

Summary

Public methods
`static long`	`getLongVersionCode(PackageInfo info)` Return `R.attr.versionCode` and `R.attr.versionCodeMajor` combined together as a single long value.
`static List<Signature>`	`getSignatures(PackageManager packageManager, String packageName)` Retrieve the `Signature` array for the given package.
`static boolean`	`hasSignatures(PackageManager packageManager, String packageName, Map<byte[], Integer> certificatesAndType, boolean matchExact)` Check if a package on device contains set of a certificates.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

Public methods

getLongVersionCode

public static long getLongVersionCode (PackageInfo info)

Return R.attr.versionCode and R.attr.versionCodeMajor combined together as a single long value. The versionCodeMajor is placed in the upper 32 bits on Android P or newer, otherwise these bits are all set to 0.

Parameters
`info`	`PackageInfo`

Returns
`long`

See also:

PackageInfo.getLongVersionCode()

getSignatures

public static List<Signature> getSignatures (PackageManager packageManager, 
                String packageName)

Retrieve the Signature array for the given package. This returns some of certificates, depending on whether the package in question is multi-signed or has signing history.

Security/identity verification should not be done with this method. This is only intended to return some array of certificates that correspond to a package.

If verification if required, either use hasSignatures(PackageManager, String, Map, boolean) or manually verify the set of certificates using PackageManager.GET_SIGNING_CERTIFICATES or PackageManager.GET_SIGNATURES.

Parameters
`packageManager`	`PackageManager`: The `PackageManager` instance to query against.
`packageName`	`String`: The package to query the for. Query by app UID is only supported by manually choosing a package name returned in `PackageManager.getPackagesForUid(int)`.

Returns
`List<Signature>`	an array of certificates the app is signed with

Throws
	if the package cannot be found through the provided
`PackageManager.NameNotFoundException`

hasSignatures

public static boolean hasSignatures (PackageManager packageManager, 
                String packageName, 
                Map<byte[], Integer> certificatesAndType, 
                boolean matchExact)

Check if a package on device contains set of a certificates. Supported types are raw X509 or SHA-256 bytes.

Parameters
`packageManager`	`PackageManager`: The `PackageManager` instance to query against.
`packageName`	`String`: The package to query the for. Query by app UID is only supported by manually choosing a package name returned in `PackageManager.getPackagesForUid(int)`.
`certificatesAndType`	`Map`: The bytes of the certificate mapped to the type, either `PackageManager.CERT_INPUT_RAW_X509` or `PackageManager.CERT_INPUT_SHA256`. A single or multiple certificates may be included.
`matchExact`	`boolean`: Whether or not to check for presence of all signatures exactly. If false, then the check will succeed if the query contains a subset of the package certificates. Matching exactly is strongly recommended when running on devices below `Build.VERSION_CODES.LOLLIPOP` due to the fake ID vulnerability that allows a package to be modified to include an unverified signature.

Returns
`boolean`	true if the package is considered signed by the given certificate set, or false otherwise

Throws
	if the package cannot be found through the provided
`PackageManager.NameNotFoundException`