Added in API level 5

BluetoothClass

class BluetoothClass : Parcelable
kotlin.Any
   ↳ android.bluetooth.BluetoothClass

Represents a Bluetooth class, which describes general characteristics and capabilities of a device. For example, a Bluetooth class will specify the general device type such as a phone, a computer, or headset, and whether it's capable of services such as audio or telephony.

Every Bluetooth class is composed of zero or more service classes, and exactly one device class. The device class is further broken down into major and minor device class components.

BluetoothClass is useful as a hint to roughly describe a device (for example to show an icon in the UI), but does not reliably describe which Bluetooth profiles or services are actually supported by a device. Accurate service discovery is done through SDP requests, which are automatically performed when creating an RFCOMM socket with BluetoothDevice.createRfcommSocketToServiceRecord and BluetoothAdapter.listenUsingRfcommWithServiceRecord

Use BluetoothDevice.getBluetoothClass to retrieve the class for a remote device.

Summary

Nested classes

Defines all device class constants.

Defines all service class constants.
Constants
static Int

static Int

static Int

Inherited constants
Public methods
Int

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
Boolean
doesClassMatch(profile: Int)

Check class bits for possible bluetooth profile support.
Boolean
equals(other: Any?)

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

Return the (major and minor) device class component of this BluetoothClass.
Int

Return the major device class component of this BluetoothClass.
Boolean
hasService(service: Int)

Return true if the specified service class is supported by this BluetoothClass.
Int

Returns a hash code value for the object.
String

Returns a string representation of the object.
Unit
writeToParcel(out: Parcel, flags: Int)

Flatten this object in to a Parcel.
Properties
static Parcelable.Creator<BluetoothClass!>

Constants

PROFILE_A2DP

Added in API level 33
static val PROFILE_A2DP: Int
 
Value: 1

PROFILE_HEADSET

Added in API level 33
static val PROFILE_HEADSET: Int
 
Value: 0

PROFILE_HID

Added in API level 33
static val PROFILE_HID: Int
 
Value: 3

Public methods

describeContents

Added in API level 5
fun describeContents(): Int

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(android.os.Parcel,int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Return
Int a bitmask indicating the set of special object types marshaled by this Parcelable object instance.
Value is either 0 or

doesClassMatch

Added in API level 33
fun doesClassMatch(profile: Int): Boolean

Check class bits for possible bluetooth profile support. This is a simple heuristic that tries to guess if a device with the given class bits might support specified profile. It is not accurate for all devices. It tries to err on the side of false positives.

Parameters
profile Int: the profile to be checked
Return
Boolean whether this device supports specified profile

equals

Added in API level 5
fun equals(other: Any?): Boolean

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.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj the reference object with which to compare.
o This value may be null.
Return
Boolean true if this object is the same as the obj argument; false otherwise.

getDeviceClass

Added in API level 5
fun getDeviceClass(): Int

Return the (major and minor) device class component of this BluetoothClass.

Values returned from this function can be compared with the public constants in BluetoothClass.Device to determine which device class is encoded in this Bluetooth class.

Return
Int device class component

getMajorDeviceClass

Added in API level 5
fun getMajorDeviceClass(): Int

Return the major device class component of this BluetoothClass.

Values returned from this function can be compared with the public constants in BluetoothClass.Device.Major to determine which major class is encoded in this Bluetooth class.

Return
Int major device class component

hasService

Added in API level 5
fun hasService(service: Int): Boolean

Return true if the specified service class is supported by this BluetoothClass.

Valid service classes are the public constants in BluetoothClass.Service. For example, BluetoothClass.Service.AUDIO.

Parameters
service Int: valid service class
Return
Boolean true if the service class is supported

hashCode

Added in API level 5
fun hashCode(): Int

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.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 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 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.
Return
Int a hash code value for this object.

toString

Added in API level 5
fun toString(): String

Returns a string representation of the object.

Return
String a string representation of the object.

writeToParcel

Added in API level 5
fun writeToParcel(
    out: Parcel, 
    flags: Int
): Unit

Flatten this object in to a Parcel.

Parameters
dest The Parcel in which the object should be written.
This value cannot be null.
flags Int: Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.
Value is either 0 or a combination of the following:

Properties

CREATOR

Added in API level 5
static val CREATOR: Parcelable.Creator<BluetoothClass!>