PairingParams

public final class PairingParams
extends Object implements Parcelable

java.lang.Object
   ↳ com.google.android.things.bluetooth.PairingParams

This class encapsulates the data for a particular pairing attempt. The caller can use it to determine the pairing approach and choose a suitable way to obtain user consent conclude the pairing process.

Summary

Constants

int PAIRING_VARIANT_CONSENT

Pairing variant where the user is expected to consent to the pairing process.

int PAIRING_VARIANT_DISPLAY_PASSKEY

Pairing variant where the user is notified of a pairing passkey.

int PAIRING_VARIANT_DISPLAY_PIN

Same as PAIRING_VARIANT_DISPLAY_PASSKEY, except that the pairing key format is different.

int PAIRING_VARIANT_PASSKEY_CONFIRMATION

Pairing variant where the user must confirm pairing after verifying a passkey which is provided to them.

int PAIRING_VARIANT_PIN

Pairing variant where the user is supposed to enter a pin to confirm and authenticate the pairing process.

int PAIRING_VARIANT_PIN_16_DIGITS

Same as PAIRING_VARIANT_PIN, with the additional caveat that the pin is 16 digits in size.

Inherited constants

From interface android.os.Parcelable

Fields

public static final Creator<PairingParams> CREATOR

Public methods

int describeContents()
boolean equals(Object o)

Indicates whether some other object is "equal to" this one.

String getPairingPin()
int getPairingType()
int hashCode()

Returns a hash code value for the object.

String toString()

Returns a string representation of the object.

void writeToParcel(Parcel dest, int flags)

Inherited methods

From class java.lang.Object
From interface android.os.Parcelable

Constants

int PAIRING_VARIANT_CONSENT

Pairing variant where the user is expected to consent to the pairing process. The caller is responsible for ensuring the user is prompted appropriately and user consent obtained for pairing.

To conclude the pairing process, you must call finishPairing(BluetoothDevice) after obtaining user consent.

Constant Value: 3 (0x00000003)

PAIRING_VARIANT_DISPLAY_PASSKEY

int PAIRING_VARIANT_DISPLAY_PASSKEY

Pairing variant where the user is notified of a pairing passkey. No action needs to be taken by the user on the local device. It is expected that the user will use the passkey information to perform pairing on the remote device.

Constant Value: 4 (0x00000004)

PAIRING_VARIANT_DISPLAY_PIN

int PAIRING_VARIANT_DISPLAY_PIN

Same as PAIRING_VARIANT_DISPLAY_PASSKEY, except that the pairing key format is different.

This variant can be thought of as the opposite of PAIRING_VARIANT_PIN. On one device the pin is displayed. On the other, the user enters it.

Constant Value: 5 (0x00000005)

PAIRING_VARIANT_PASSKEY_CONFIRMATION

int PAIRING_VARIANT_PASSKEY_CONFIRMATION

Pairing variant where the user must confirm pairing after verifying a passkey which is provided to them. It is expected the user should be able to verify it by matching the provided pairing key with the key displayed on the remote device.

The pin is available using getPairingPin(). The pairing process can be completed using finishPairing(BluetoothDevice).

Constant Value: 2 (0x00000002)

PAIRING_VARIANT_PIN

int PAIRING_VARIANT_PIN

Pairing variant where the user is supposed to enter a pin to confirm and authenticate the pairing process. It is expected the pin has been displayed in some way on the remote device.

To conclude the pairing process for this variant, you must call finishPairing(BluetoothDevice, String) after obtaining the pin from the user through suitable user input.

Constant Value: 0 (0x00000000)

PAIRING_VARIANT_PIN_16_DIGITS

int PAIRING_VARIANT_PIN_16_DIGITS

Same as PAIRING_VARIANT_PIN, with the additional caveat that the pin is 16 digits in size.

To conclude the pairing process for this variant, you must call finishPairing(BluetoothDevice, String) after obtaining the pin from the user through suitable user input.

Constant Value: 7 (0x00000007)

Fields

CREATOR

Creator<PairingParams> CREATOR

Public methods

describeContents

int describeContents ()

Returns
int

equals

boolean equals (Object o)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

Parameters
o Object: the reference object with which to compare.
Returns
boolean true if this object is the same as the obj argument; false otherwise.

getPairingPin

String getPairingPin ()

Returns
String Pairing pin to notify the user for the pairing process. If not relevant to the current pairing process, it's null.

getPairingType

int getPairingType ()

Returns
int Pairing type for this pairing attempt. The Pairing type is based on the User Interface capabilities of both the pairing devices, and determines the process of pairing.

hashCode

int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

Returns
int a hash code value for this object.

toString

String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of: 

 getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns
String a string representation of the object.

writeToParcel

void writeToParcel (Parcel dest, 
                int flags)

Parameters
dest Parcel

flags int