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CompanionDeviceManager

public final class CompanionDeviceManager
extends Object

java.lang.Object
↳	android.companion.CompanionDeviceManager

System level service for managing companion devices See this guide for a usage example.

To obtain an instance call Context#getSystemService(Context#COMPANION_DEVICE_SERVICE) Then, call associate(android.companion.AssociationRequest, android.companion.CompanionDeviceManager.Callback, android.os.Handler) to initiate the flow of associating current package with a device selected by user.

See also:

Summary

Nested classes
`class`	`CompanionDeviceManager.Callback` A callback to receive once at least one suitable device is found, or the search failed (e.g. timed out)

Constants
`String`	`EXTRA_DEVICE` A device, returned in the activity result of the `IntentSender` received in `Callback#onDeviceFound` Type is: for classic Bluetooth - `BluetoothDevice` for Bluetooth LE - `ScanResult` for WiFi - `ScanResult`

Constants

String

EXTRA_DEVICE

A device, returned in the activity result of the IntentSender received in Callback#onDeviceFound Type is:

for classic Bluetooth - BluetoothDevice
for Bluetooth LE - ScanResult
for WiFi - ScanResult

Public methods
`void`	`associate(AssociationRequest request, CompanionDeviceManager.Callback callback, Handler handler)` Associate this app with a companion device, selected by user Once at least one appropriate device is found, `callback` will be called with a `PendingIntent` that can be used to show the list of available devices for the user to select.
`void`	`disassociate(String deviceMacAddress)` Remove the association between this app and the device with the given mac address.
`List<String>`	`getAssociations()` Calling this API requires a uses-feature `PackageManager#FEATURE_COMPANION_DEVICE_SETUP` declaration in the manifest
`boolean`	`hasNotificationAccess(ComponentName component)` Check whether the given component can access the notifications via a `NotificationListenerService` Your app must have an association with a device before calling this API Calling this API requires a uses-feature `PackageManager#FEATURE_COMPANION_DEVICE_SETUP` declaration in the manifest
`void`	`requestNotificationAccess(ComponentName component)` Request notification access for the given component.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

EXTRA_DEVICE

public static final String EXTRA_DEVICE

A device, returned in the activity result of the IntentSender received in Callback#onDeviceFound Type is:

for classic Bluetooth - BluetoothDevice
for Bluetooth LE - ScanResult
for WiFi - ScanResult

Constant Value: "android.companion.extra.DEVICE"

Public methods

associate

public void associate (AssociationRequest request, 
                CompanionDeviceManager.Callback callback, 
                Handler handler)

Associate this app with a companion device, selected by user

Once at least one appropriate device is found, callback will be called with a PendingIntent that can be used to show the list of available devices for the user to select. It should be started for result (i.e. using Activity.startIntentSenderForResult(IntentSender, int, Intent, int, int, int)), as the resulting Intent will contain extra EXTRA_DEVICE, with the selected device. (e.g. BluetoothDevice)

If your app needs to be excluded from battery optimizations (run in the background) or to have unrestricted data access (use data in the background) you can declare that you use the Manifest.permission.REQUEST_COMPANION_RUN_IN_BACKGROUND and Manifest.permission.REQUEST_COMPANION_USE_DATA_IN_BACKGROUND respectively. Note that these special capabilities have a negative effect on the device's battery and user's data usage, therefore you should requested them when absolutely necessary.

You can call getAssociations() to get the list of currently associated devices, and disassociate(String) to remove an association. Consider doing so when the association is no longer relevant to avoid unnecessary battery and/or data drain resulting from special privileges that the association provides

Calling this API requires a uses-feature PackageManager#FEATURE_COMPANION_DEVICE_SETUP declaration in the manifest

Parameters
`request`	`AssociationRequest`: specific details about this request This value cannot be `null`.
`callback`	`CompanionDeviceManager.Callback`: will be called once there's at least one device found for user to choose from This value cannot be `null`.
`handler`	`Handler`: A handler to control which thread the callback will be delivered on, or null, to deliver it on main thread This value may be `null`.

See also:

AssociationRequest

disassociate

public void disassociate (String deviceMacAddress)

Remove the association between this app and the device with the given mac address.

Any privileges provided via being associated with a given device will be revoked

Consider doing so when the association is no longer relevant to avoid unnecessary battery and/or data drain resulting from special privileges that the association provides

Calling this API requires a uses-feature PackageManager#FEATURE_COMPANION_DEVICE_SETUP declaration in the manifest

Parameters
`deviceMacAddress`	`String`: the MAC address of device to disassociate from this app This value cannot be `null`.

getAssociations

public List<String> getAssociations ()

Calling this API requires a uses-feature PackageManager#FEATURE_COMPANION_DEVICE_SETUP declaration in the manifest

Returns
`List<String>`	a list of MAC addresses of devices that have been previously associated with the current app. You can use these with `disassociate(String)` This value cannot be `null`.

hasNotificationAccess

public boolean hasNotificationAccess (ComponentName component)

Check whether the given component can access the notifications via a NotificationListenerService Your app must have an association with a device before calling this API

Calling this API requires a uses-feature PackageManager#FEATURE_COMPANION_DEVICE_SETUP declaration in the manifest

Parameters
`component`	`ComponentName`: the name of the component

Returns
`boolean`	whether the given component has the notification listener permission

requestNotificationAccess

public void requestNotificationAccess (ComponentName component)

Request notification access for the given component. The given component must follow the protocol specified in NotificationListenerService Only components from the same ComponentName#getPackageName as the calling app are allowed. Your app must have an association with a device before calling this API

Calling this API requires a uses-feature PackageManager#FEATURE_COMPANION_DEVICE_SETUP declaration in the manifest

Parameters
`component`	`ComponentName`

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CompanionDeviceManager

Summary

Nested classes

Constants

Public methods

Inherited methods

Constants

EXTRA_DEVICE

Public methods

associate

disassociate

getAssociations

hasNotificationAccess

requestNotificationAccess