Added in API level 36

Summary: Inherited Constants | Fields | Ctors | Methods | Inherited Methods

WifiP2pDirInfo

Kotlin |Java

public final class WifiP2pDirInfo
extends Object implements Parcelable

java.lang.Object
↳	android.net.wifi.p2p.WifiP2pDirInfo

This object contains the Device Identity Resolution (DIR) Info to check if the device is a previously paired device. The device advertises this information in Bluetooth LE advertising packets and Unsynchronized Service Discovery (USD) frames. The device receiving DIR Info uses this information to identify that the peer device is a previously paired device. For Details, refer Wi-Fi Alliance Wi-Fi Direct R2 specification section 3.8.2 Pairing Identity and section 3.9.2.3.2 Optional Advertising Data Elements.

Summary

Inherited constants

From interface android.os.Parcelable

`int`	`CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int`	`PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

Fields
`public static final Creator<WifiP2pDirInfo>`	`CREATOR` Implement the Parcelable interface

Public constructors
`WifiP2pDirInfo(MacAddress macAddress, byte[] nonce, byte[] dirTag)` Constructor for Device Identity Resolution (DIR) Info generated based on the 128 bit Device Identity key.

Public methods
`int`	`describeContents()` Implement the Parcelable interface
`byte[]`	`getDirTag()` Get the DIR Tag value.
`MacAddress`	`getMacAddress()`
`byte[]`	`getNonce()` Get the nonce value used to derive DIR Tag.
`String`	`toString()` Generates a string of all the defined elements.
`void`	`writeToParcel(Parcel dest, int flags)` Implement the Parcelable interface

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.

From interface


        
          android.os.Parcelable

`abstract int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Fields

CREATOR

Added in API level 36

public static final Creator<WifiP2pDirInfo> CREATOR

Implement the Parcelable interface

Public constructors

WifiP2pDirInfo

Added in API level 36

public WifiP2pDirInfo (MacAddress macAddress, 
                byte[] nonce, 
                byte[] dirTag)

Constructor for Device Identity Resolution (DIR) Info generated based on the 128 bit Device Identity key. For details, refer Wi-Fi Alliance Wi-Fi Direct R2 specification Table 8.

Parameters
`macAddress`	`MacAddress`: The MAC address of the P2P device interface. This value cannot be `null`.
`nonce`	`byte`: Random number of 8 octets. This value cannot be `null`.
`dirTag`	`byte`: Resolvable identity value of 8 octets derived based on the device MAC address, device identity key and P2P device MAC address. Tag = Truncate-64(HMAC-SHA-256(DevIk, "DIR" \|\| P2P Device Address \|\| Nonce)) This value cannot be `null`.

Public methods

describeContents

Added in API level 36

public int describeContents ()

Implement the Parcelable interface

Returns
`int`	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

getDirTag

Added in API level 36

public byte[] getDirTag ()

Get the DIR Tag value. See WifiP2pDirInfo

Returns
`byte[]`	A byte-array of Tag value of size 8 octets. This value cannot be `null`.

getMacAddress

Added in API level 36

public MacAddress getMacAddress ()

Returns
`MacAddress`	the MAC address of the P2P device interface. This value cannot be `null`.

getNonce

Added in API level 36

public byte[] getNonce ()

Get the nonce value used to derive DIR Tag. See WifiP2pDirInfo

Returns
`byte[]`	A byte-array of random number of size 8 octets. This value cannot be `null`.

toString

Added in API level 36

public String toString ()

Generates a string of all the defined elements.

Returns
`String`	a compiled string representing all elements

writeToParcel

Added in API level 36

public void writeToParcel (Parcel dest, 
                int flags)

Implement the Parcelable interface

Parameters
`dest`	`Parcel`: This value cannot be `null`.
`flags`	`int`: Additional flags about how the object should be written. May be 0 or `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES