public
final
class
BluetoothClass
extends Object
implements
Parcelable
| java.lang.Object | |
| ↳ | 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.
classBluetoothClass.Device
Defines all device class constants.
classBluetoothClass.Service
Defines all service class constants.
Constants | |
|---|---|
int |
PROFILE_A2DP
|
int |
PROFILE_HEADSET
|
int |
PROFILE_HID
|
Inherited constants |
|---|
Fields | |
|---|---|
public
static
final
Creator<BluetoothClass> |
CREATOR
|
Public methods | |
|---|---|
int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
boolean
|
doesClassMatch(int profile)
Check class bits for possible bluetooth profile support. |
boolean
|
equals(Object o)
Indicates whether some other object is "equal to" this one. |
int
|
getDeviceClass()
Return the (major and minor) device class component of this |
int
|
getMajorDeviceClass()
Return the major device class component of this |
boolean
|
hasService(int service)
Return true if the specified service class is supported by this |
int
|
hashCode()
Returns a hash code value for the object. |
String
|
toString()
Returns a string representation of the object. |
void
|
writeToParcel(Parcel out, int flags)
Flatten this object in to a Parcel. |
Inherited methods | |
|---|---|
public static final int PROFILE_A2DP
Constant Value: 1 (0x00000001)
public static final int PROFILE_HEADSET
Constant Value: 0 (0x00000000)
public static final int PROFILE_HID
Constant Value: 3 (0x00000003)
public int describeContents ()
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(Parcel,int),
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR bit.
int0 or
public boolean doesClassMatch (int profile)
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 |
| Returns | |
|---|---|
boolean |
whether this device supports specified profile |
public 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:
x, x.equals(x) should return
true.
x and y, x.equals(y)
should return true if and only if
y.equals(x) returns true.
x, y, and z, if
x.equals(y) returns true and
y.equals(z) returns true, then
x.equals(z) should return true.
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.
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 | |
|---|---|
o |
Object: This value may be null. |
| Returns | |
|---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
public int getDeviceClass ()
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.
| Returns | |
|---|---|
int |
device class component |
public int getMajorDeviceClass ()
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.
| Returns | |
|---|---|
int |
major device class component |
public boolean hasService (int service)
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 |
| Returns | |
|---|---|
boolean |
true if the service class is supported |
public 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:
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.
equals method, then calling the hashCode method on each of the two objects must produce the
same integer result.
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.
| Returns | |
|---|---|
int |
a hash code value for this object. |
public String toString ()
Returns a string representation of the object.
| Returns | |
|---|---|
String |
a string representation of the object. |
public void writeToParcel (Parcel out,
int flags)Flatten this object in to a Parcel.
outParcel: The Parcel in which the object should be written.
null.flagsint: Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE.
0 or a combination of the following:
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Last updated 2026-02-26 UTC.