UsbRequest.Queue Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Overloads
| Queue(ByteBuffer) |
Queues the request to send or receive data on its endpoint. |
| Queue(ByteBuffer, Int32) |
Queues the request to send or receive data on its endpoint. |
Queue(ByteBuffer)
Queues the request to send or receive data on its endpoint.
[Android.Runtime.Register("queue", "(Ljava/nio/ByteBuffer;)Z", "GetQueue_Ljava_nio_ByteBuffer_Handler", ApiSince=26)]
public virtual bool Queue (Java.Nio.ByteBuffer? buffer);[<Android.Runtime.Register("queue", "(Ljava/nio/ByteBuffer;)Z", "GetQueue_Ljava_nio_ByteBuffer_Handler", ApiSince=26)>]
abstract member Queue : Java.Nio.ByteBuffer -> bool
override this.Queue : Java.Nio.ByteBuffer -> boolParameters
- buffer
- ByteBuffer
the buffer containing the bytes to send, or the buffer to fill. The state
of the buffer is undefined until the request is returned by
UsbDeviceConnection#requestWait. If the request failed the buffer
will be unchanged; if the request succeeded the position of the buffer is
incremented by the number of bytes sent/received. Before
Build.VERSION_CODES#P, a buffer of length larger than 16384 bytes
would throw IllegalArgumentException. In API Build.VERSION_CODES#P
and after, any size buffer is valid.
Returns
true if the queueing operation succeeded
- Attributes
Remarks
Queues the request to send or receive data on its endpoint.
For OUT endpoints, the remaining bytes of the buffer will be sent on the endpoint. For IN endpoints, the endpoint will attempt to fill the remaining bytes of the buffer. If the queueing operation is successful, return true. The result will be returned via UsbDeviceConnection#requestWait
Java documentation for android.hardware.usb.UsbRequest.queue(java.nio.ByteBuffer).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Applies to
Queue(ByteBuffer, Int32)
Queues the request to send or receive data on its endpoint.
[Android.Runtime.Register("queue", "(Ljava/nio/ByteBuffer;I)Z", "GetQueue_Ljava_nio_ByteBuffer_IHandler")]
public virtual bool Queue (Java.Nio.ByteBuffer? buffer, int length);[<Android.Runtime.Register("queue", "(Ljava/nio/ByteBuffer;I)Z", "GetQueue_Ljava_nio_ByteBuffer_IHandler")>]
abstract member Queue : Java.Nio.ByteBuffer * int -> bool
override this.Queue : Java.Nio.ByteBuffer * int -> boolParameters
- buffer
- ByteBuffer
the buffer containing the bytes to write, or location to store the results of a
read. Position and array offset will be ignored and assumed to be 0. Limit and
capacity will be ignored. Once the request
UsbDeviceConnection#requestWait() is processed the position will be set
to the number of bytes read/written.
- length
- Int32
number of bytes to read or write. Before Build.VERSION_CODES#P, a
value larger than 16384 bytes would be truncated down to 16384. In API
Build.VERSION_CODES#P and after, any value of length is valid.
Returns
true if the queueing operation succeeded
- Attributes
Remarks
Queues the request to send or receive data on its endpoint.
For OUT endpoints, the given buffer data will be sent on the endpoint. For IN endpoints, the endpoint will attempt to read the given number of bytes into the specified buffer. If the queueing operation is successful, return true. The result will be returned via UsbDeviceConnection#requestWait
This member is deprecated. Use #queue(ByteBuffer) instead.
Java documentation for android.hardware.usb.UsbRequest.queue(java.nio.ByteBuffer, int).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.