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Summary: Methods | Inherited Methods

# DisplayHashManager

`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.

### 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 timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

## 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`.

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

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