DisplayHashManager

Kotlin |Java

public final class DisplayHashManager
extends Object

java.lang.Object
↳	android.view.displayhash.DisplayHashManager

Manages DisplayHash requests. The manager object can be retrieved by calling Context.getSystemService(Context.DISPLAY_HASH_SERVICE)

Summary

Public methods
`Set<String>`	`getSupportedHashAlgorithms()` Get a Set of DisplayHash algorithms that the device supports.
`VerifiedDisplayHash`	`verifyDisplayHash(DisplayHash displayHash)` Call to verify that the DisplayHash passed in was generated by the system.

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.

Added in API level 31

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`.

Added in API level 31

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`.

Returns
`VerifiedDisplayHash`	a `VerifiedDisplayHash` if the hash was generated by the system or null if the hash cannot be verified.