UsbManager Class

Definition

Namespace:: Android.Hardware.Usb

Assembly:: Mono.Android.dll

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.

This class allows you to access the state of USB and communicate with USB devices.

[Android.Runtime.Register("android/hardware/usb/UsbManager", DoNotGenerateAcw=true)]
public class UsbManager : Java.Lang.Object

[<Android.Runtime.Register("android/hardware/usb/UsbManager", DoNotGenerateAcw=true)>]
type UsbManager = class
    inherit Object

Inheritance: Object

JavaObject

Object
UsbManager

Attributes: RegisterAttribute

Remarks

This class allows you to access the state of USB and communicate with USB devices. Currently only host mode is supported in the public API.

<div class="special reference"> <h3>Developer Guides</h3>

For more information about communicating with USB hardware, read the USB developer guide.

</div>

Java documentation for android.hardware.usb.UsbManager.

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.

Constructors

Name	Description
UsbManager(IntPtr, JniHandleOwnership)	A constructor used when creating managed representations of JNI objects; called by the runtime.

Fields

Name	Description
ActionUsbAccessoryAttached	Activity intent sent when user attaches a USB accessory.
ActionUsbAccessoryDetached	Broadcast Action: A broadcast for USB accessory detached event.
ActionUsbDeviceAttached	Activity intent sent when user attaches a USB device.
ActionUsbDeviceDetached	Broadcast Action: A broadcast for USB device detached event.
ExtraAccessory	Name of extra for `#ACTION_USB_ACCESSORY_ATTACHED` and `#ACTION_USB_ACCESSORY_DETACHED` broadcasts containing the `UsbAccessory` object for the accessory.
ExtraDevice	Name of extra for `#ACTION_USB_DEVICE_ATTACHED` and `#ACTION_USB_DEVICE_DETACHED` broadcasts containing the `UsbDevice` object for the device.
ExtraPermissionGranted	Name of extra added to the `android.app.PendingIntent` passed into `#requestPermission(UsbDevice, PendingIntent)` or `#requestPermission(UsbAccessory, PendingIntent)` containing a boolean value indicating whether the user granted permission or not.

Properties

Name	Description
Class	Returns the runtime class of this `Object`. (Inherited from Object)
DeviceList	Returns a HashMap containing all USB devices currently attached.
Handle	The handle to the underlying Android instance. (Inherited from Object)
JniIdentityHashCode	Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object)
JniManagedPeerState	Gets the state flags last assigned by the runtime. (Inherited from JavaObject)
JniPeerMembers	Gets the JNI metadata used to access members of this Java binding.
PeerReference	Gets the JNI object reference for this Java peer. (Inherited from Object)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.

Methods

Name	Description
Clone()	Creates and returns a copy of this object. (Inherited from Object)
Construct(JniObjectReference, JniObjectReferenceOptions)	Delegates construction of this peer to the runtime's value manager. (Inherited from JavaObject)
Dispose()	Releases the resources held by this Java peer. (Inherited from Object)
Dispose(Boolean)	Releases the resources held by this Java peer. (Inherited from Object)
DisposeUnlessReferenced()	Asks the value manager to dispose this peer unless its mapping retains this same managed instance. (Inherited from JavaObject)
Equals(Object)	Tests whether another managed peer refers to the same Java object. (Inherited from JavaObject)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetAccessoryList()	Returns a list of currently attached USB accessories.
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
HasPermission(UsbAccessory)	Returns true if the caller has permission to access the accessory.
HasPermission(UsbDevice)	Returns true if the caller has permission to access the device.
JavaFinalize()	Obsolete. Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
OpenAccessory(UsbAccessory)	Opens a file descriptor for reading and writing data to the USB accessory.
OpenAccessoryInputStream(UsbAccessory)	Opens an input stream for reading from the USB accessory.
OpenAccessoryOutputStream(UsbAccessory)	Opens an output stream for writing to the USB accessory.
OpenDevice(UsbDevice)	Opens the device so it can be used to send and receive data using `android.hardware.usb.UsbRequest`.
RequestPermission(UsbAccessory, PendingIntent)	Requests temporary permission for the given package to access the accessory.
RequestPermission(UsbDevice, PendingIntent)	Requests temporary permission for the given package to access the device.
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
SetPeerReference(JniObjectReference, JniObjectReferenceOptions)	Stores a reference value in the control block without creating a JNI reference copy. (Inherited from JavaObject)
ToArray<T>()	Creates a managed array from this Java array wrapper. (Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnregisterFromRuntime()	Unregisters this Java peer from the interop runtime. (Inherited from Object)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

Name	Description
IJavaPeerable.Disposed()	Marks this peer as disposed and calls `Dispose` with `disposing` set to `true`. (Inherited from JavaObject)
IJavaPeerable.Finalized()	Marks this peer as disposed and calls `Dispose` with `disposing` set to `false`. (Inherited from JavaObject)
IJavaPeerable.JniObjectReferenceControlBlock	Gets the native control-block pointer used by this peer. (Inherited from JavaObject)
IJavaPeerable.SetJniIdentityHashCode(Int32)	Stores the identity hash code supplied by the runtime. (Inherited from JavaObject)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	Replaces the stored managed peer state flags. (Inherited from JavaObject)
IJavaPeerable.SetPeerReference(JniObjectReference)	Updates the peer reference and releases a disposed peer's control block when the reference is invalid. (Inherited from JavaObject)

Extension Methods

Name	Description
GetJniTypeName(IJavaPeerable)	Gets the JNI name of the type of the instance `self`.
JavaAs<TResult>(IJavaPeerable)	Try to coerce `self` to type `TResult`, checking that the coercion is valid on the Java side.
JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)	Reuses a compatible managed peer or obtains a wrapper of the requested type.
TryJavaCast<TResult>(IJavaPeerable, TResult)	Try to coerce `self` to type `TResult`, checking that the coercion is valid on the Java side.

Applies to