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DisplayHashManager
public
final
class
DisplayHashManager
extends Object
Manages DisplayHash requests. The manager object can be retrieved by calling
Context.getSystemService(Context.DISPLAY_HASH_SERVICE)
Summary
Inherited methods |
|---|
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object.
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
|
Public methods
getSupportedHashAlgorithms
public Set<String> getSupportedHashAlgorithms ()
Get a Set of DisplayHash algorithms that the device supports.
| Returns |
|---|
Set<String> |
a String Set of supported hashing algorithms. The String value of one
algorithm should be used when requesting to generate the DisplayHash.
This value cannot be null. |
verifyDisplayHash
public VerifiedDisplayHash verifyDisplayHash (DisplayHash displayHash)
Call to verify that the DisplayHash passed in was generated by the system.
| Parameters |
|---|
displayHash |
DisplayHash: The hash to verify that it was generated by the system.
This value cannot be null. |
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# DisplayHashManager\n\nAdded in [API level 31](/guide/topics/manifest/uses-sdk-element#ApiLevels) \nSummary: [Methods](#pubmethods) \\| [Inherited Methods](#inhmethods) \n\nDisplayHashManager\n==================\n\n*** ** * ** ***\n\n[Kotlin](/reference/kotlin/android/view/displayhash/DisplayHashManager \"View this page in Kotlin\") \\|Java\n\n\n`\npublic\n\nfinal\n\nclass\nDisplayHashManager\n`\n\n\n`\n\nextends `[Object](/reference/java/lang/Object)`\n\n\n`\n\n`\n\n\n`\n\n|---|---------------------------------------------|\n| [java.lang.Object](/reference/java/lang/Object) ||\n| ↳ | android.view.displayhash.DisplayHashManager |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nManages DisplayHash requests. The manager object can be retrieved by calling\n`Context.getSystemService(Context.DISPLAY_HASH_SERVICE)`\n\nSummary\n-------\n\n| ### Public methods ||\n|-----------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` `[Set](/reference/java/util/Set)`\u003c`[String](/reference/java/lang/String)`\u003e` | ` `[getSupportedHashAlgorithms](/reference/android/view/displayhash/DisplayHashManager#getSupportedHashAlgorithms())`() ` Get a Set of DisplayHash algorithms that the device supports. |\n| ` `[VerifiedDisplayHash](/reference/android/view/displayhash/VerifiedDisplayHash) | ` `[verifyDisplayHash](/reference/android/view/displayhash/DisplayHashManager#verifyDisplayHash(android.view.displayhash.DisplayHash))`(`[DisplayHash](/reference/android/view/displayhash/DisplayHash)` displayHash) ` Call to verify that the DisplayHash passed in was generated by the system. |\n\n| ### Inherited methods |\n|-----------------------|---|\n| From class ` `[java.lang.Object](/reference/java/lang/Object)` ` |---------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](/reference/java/lang/Object) | ` `[clone](/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](/reference/java/lang/Object)` obj) ` Indicates whether some other object is \"equal to\" this one. | | ` void` | ` `[finalize](/reference/java/lang/Object#finalize())`() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final `[Class](/reference/java/lang/Class)`\u003c?\u003e` | ` `[getClass](/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this `Object`. | | ` int` | ` `[hashCode](/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](/reference/java/lang/String) | ` `[toString](/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait(long,%20int))`(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait(long))`(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait())`() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||\n\nPublic methods\n--------------\n\n### getSupportedHashAlgorithms\n\nAdded in [API level 31](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic Set\u003cString\u003e getSupportedHashAlgorithms ()\n```\n\nGet a Set of DisplayHash algorithms that the device supports.\n\n\u003cbr /\u003e\n\n| Returns ||\n|----------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Set](/reference/java/util/Set)`\u003c`[String](/reference/java/lang/String)`\u003e` | a String Set of supported hashing algorithms. The String value of one algorithm should be used when requesting to generate the DisplayHash. This value cannot be `null`. \u003cbr /\u003e |\n\n### verifyDisplayHash\n\nAdded in [API level 31](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic VerifiedDisplayHash verifyDisplayHash (DisplayHash displayHash)\n```\n\nCall to verify that the DisplayHash passed in was generated by the system.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------------|------------------------------------------------------------------------------------------------------------|\n| `displayHash` | `DisplayHash`: The hash to verify that it was generated by the system. This value cannot be `null`. \u003cbr /\u003e |\n\n| Returns ||\n|--------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [VerifiedDisplayHash](/reference/android/view/displayhash/VerifiedDisplayHash) | a [VerifiedDisplayHash](/reference/android/view/displayhash/VerifiedDisplayHash) if the hash was generated by the system or null if the hash cannot be verified. \u003cbr /\u003e |"]]
