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 createRfcommSocketToServiceRecord(UUID)
and listenUsingRfcommWithServiceRecord(String, UUID)
Use getBluetoothClass()
to retrieve the class for
a remote device.
Nested Classes | |||||||||||
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BluetoothClass.Device | Defines all device class constants. | ||||||||||
BluetoothClass.Service | Defines all service class constants. |
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Inherited Constants | |||||||||||
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From interface
android.os.Parcelable
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Fields | |||||||||||
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CREATOR |
Public Methods | |||||||||||
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Describe the kinds of special objects contained in this Parcelable's
marshalled representation.
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Compares this instance with the specified object and indicates if they
are equal.
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Return the (major and minor) device class component of this
BluetoothClass . | |||||||||||
Return the major device class component of this
BluetoothClass . | |||||||||||
Return true if the specified service class is supported by this
BluetoothClass . | |||||||||||
Returns an integer hash code for this object.
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Returns a string containing a concise, human-readable description of this
object.
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Flatten this object in to a Parcel.
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[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
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From interface
android.os.Parcelable
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Describe the kinds of special objects contained in this Parcelable's marshalled representation.
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.
o | the object to compare this instance with. |
---|
true
if the specified object is equal to this Object
; false
otherwise.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 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 true if the specified service class is supported by this
BluetoothClass
.
Valid service classes are the public constants in
BluetoothClass.Service
. For example, AUDIO
.
service | valid service class |
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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 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.
Flatten this object in to a Parcel.
out | The Parcel in which the object should be written. |
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flags | Additional flags about how the object should be written.
May be 0 or PARCELABLE_WRITE_RETURN_VALUE .
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