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Android APIs
public final class

BluetoothClass

extends Object
implements Parcelable
java.lang.Object
   ↳ android.bluetooth.BluetoothClass

Class Overview

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 createRfcommSocketToServiceRecord(UUID) and listenUsingRfcommWithServiceRecord(String, UUID)

Use getBluetoothClass() to retrieve the class for a remote device.

Summary

Nested Classes
class BluetoothClass.Device Defines all device class constants. 
class BluetoothClass.Service Defines all service class constants. 
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Inherited Constants
From interface android.os.Parcelable
Fields
public static final Creator<BluetoothClass> CREATOR
Public Methods
int describeContents()
Describe the kinds of special objects contained in this Parcelable's marshalled representation.
boolean equals(Object o)
Compares this instance with the specified object and indicates if they are equal.
int getDeviceClass()
Return the (major and minor) device class component of this BluetoothClass.
int getMajorDeviceClass()
Return the major device class component of this BluetoothClass.
boolean hasService(int service)
Return true if the specified service class is supported by this BluetoothClass.
int hashCode()
Returns an integer hash code for this object.
String toString()
Returns a string containing a concise, human-readable description of this object.
void writeToParcel(Parcel out, int flags)
Flatten this object in to a Parcel.
[Expand]
Inherited Methods
From class java.lang.Object
From interface android.os.Parcelable

Fields

public static final Creator<BluetoothClass> CREATOR

Since: API Level 5

Public Methods

public int describeContents ()

Since: API Level 5

Describe the kinds of special objects contained in this Parcelable's marshalled representation.

Returns
  • a bitmask indicating the set of special object types marshalled by the Parcelable.

public boolean equals (Object o)

Since: API Level 5

Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.

The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.

The general contract for the equals and hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.

Parameters
o the object to compare this instance with.
Returns
  • true if the specified object is equal to this Object; false otherwise.

public int getDeviceClass ()

Since: API Level 5

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
  • device class component

public int getMajorDeviceClass ()

Since: API Level 5

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
  • major device class component

public boolean hasService (int service)

Since: API Level 5

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

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

Parameters
service valid service class
Returns
  • true if the service class is supported

public int hashCode ()

Since: API Level 5

Returns an integer hash code for this object. By contract, any two objects for which equals(Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Returns
  • this object's hash code.

public String toString ()

Since: API Level 5

Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression: 

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

See Writing a useful toString method if you intend implementing your own toString method.

Returns
  • a printable representation of this object.

public void writeToParcel (Parcel out, int flags)

Since: API Level 5

Flatten this object in to a Parcel.

Parameters
out The Parcel in which the object should be written.
flags Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.