# Print output for @column tags ?>
public
class
UsbInterface
extends Object
implements
Parcelable
java.lang.Object | |
↳ | android.hardware.usb.UsbInterface |
A class representing an interface on a UsbDevice
.
USB devices can have one or more interfaces, each one providing a different
piece of functionality, separate from the other interfaces.
An interface will have one or more UsbEndpoint
s, which are the
channels by which the host transfers data with the device.
For more information about communicating with USB hardware, read the USB developer guide.
Inherited constants |
---|
Fields | |
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public
static
final
Creator<UsbInterface> |
CREATOR
|
Public methods | |
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int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
int
|
getAlternateSetting()
Returns the interface's bAlternateSetting field. |
UsbEndpoint
|
getEndpoint(int index)
Returns the |
int
|
getEndpointCount()
Returns the number of |
int
|
getId()
Returns the interface's bInterfaceNumber field. |
int
|
getInterfaceClass()
Returns the interface's class field. |
int
|
getInterfaceProtocol()
Returns the interface's protocol field. |
int
|
getInterfaceSubclass()
Returns the interface's subclass field. |
String
|
getName()
Returns the interface's name. |
String
|
toString()
Returns a string representation of the object. |
void
|
writeToParcel(Parcel parcel, int flags)
Flatten this object in to a Parcel. |
Inherited methods | |
---|---|
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(android.os.Parcel, int)
,
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR
bit.
Returns | |
---|---|
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
public int getAlternateSetting ()
Returns the interface's bAlternateSetting field.
This is an integer that along with the ID uniquely identifies
the interface on the device.
UsbDeviceConnection#setInterface
can be used to switch between
two interfaces with the same ID but different alternate setting.
Returns | |
---|---|
int |
the interface's alternate setting |
public UsbEndpoint getEndpoint (int index)
Returns the UsbEndpoint
at the given index.
Parameters | |
---|---|
index |
int |
Returns | |
---|---|
UsbEndpoint |
the endpoint |
public int getEndpointCount ()
Returns the number of UsbEndpoint
s this interface contains.
Returns | |
---|---|
int |
the number of endpoints |
public int getId ()
Returns the interface's bInterfaceNumber field. This is an integer that along with the alternate setting uniquely identifies the interface on the device.
Returns | |
---|---|
int |
the interface's ID |
public int getInterfaceClass ()
Returns the interface's class field.
Some useful constants for USB classes can be found in UsbConstants
Returns | |
---|---|
int |
the interface's class |
public int getInterfaceProtocol ()
Returns the interface's protocol field.
Returns | |
---|---|
int |
the interface's protocol |
public int getInterfaceSubclass ()
Returns the interface's subclass field.
Returns | |
---|---|
int |
the interface's subclass |
public String getName ()
Returns the interface's name.
Returns | |
---|---|
String |
the interface's name, or null if the property could not be read |
public 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. |
public void writeToParcel (Parcel parcel, int flags)
Flatten this object in to a Parcel.
Parameters | |
---|---|
parcel |
Parcel : The Parcel in which the object should be written. |
flags |
int : Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE .
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE , and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |