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AmbientModeSupport

class AmbientModeSupport : Fragment
kotlin.Any
   ↳ androidx.fragment.app.Fragment
   ↳ androidx.wear.ambient.AmbientModeSupport

Use this as a headless Fragment to add ambient support to an Activity on Wearable devices.

The application that uses this should add the android.Manifest.permission#WAKE_LOCK permission to its manifest.

The following describes the general use of this class:

Create a subclass of one of the FragmentActivity classes and implement the AmbientCallbackProvider interface. Override the AmbientCallbackProvider#getAmbientCallback() method to provide the callbacks required for reacting to the ambient events from the Android system. If a valid AmbientCallback is not provided (either no implementation of the AmbientCallbackProvider interface, or returning null from AmbientCallbackProvider#getAmbientCallback()), then ambient mode will NOT be enabled.

The primary entry point for this code is the attach(FragmentActivity) method. It should be called with an FragmentActivity as an argument and that FragmentActivity will then be able to receive ambient lifecycle events through an AmbientCallback. The FragmentActivity will also receive a AmbientController object from the attachment which can be used to query the current status of the ambient mode.

An example of how to implement the AmbientCallbackProvider interface, attach AmbientModeSupport to your FragmentActivity and use the AmbientController can be found below:

public class MyActivity extends FragmentActivity
      implements AmbientModeSupport.AmbientCallbackProvider {
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState)
          ...
          AmbientModeSupport.AmbientController controller = AmbientModeSupport.attach(this);
          boolean isAmbient = controller.isAmbient();
      }
      @Override
      AmbientModeSupport.AmbientCallback getAmbientCallback() {
          return new AmbientModeSupport.AmbientCallback() {
              public void onEnterAmbient(Bundle ambientDetails) {...}
              public void onExitAmbient(Bundle ambientDetails) {...}
          }
      }
  }

Summary

Nested classes
abstract

Callback to receive ambient mode state changes.

abstract

Interface for any Activity that wishes to implement Ambient Mode.

A class for interacting with the ambient mode on a wearable device.

Constants
static String

Property in bundle passed to AmbientCallback#onEnterAmbient(Bundle) to indicate whether burn-in protection is required.

static String

Property in bundle passed to AmbientCallback#onEnterAmbient(Bundle) to indicate whether the device has low-bit ambient mode.

static String

Fragment tag used by default when adding AmbientModeSupport to add ambient support to a FragmentActivity.

Public constructors

Constructor

Public methods
static AmbientModeSupport.AmbientController!
attach(activity: T)

Attach ambient support to the given activity.

Unit
dump(prefix: String, fd: FileDescriptor?, writer: PrintWriter, args: Array<String!>?)

Unit
onAttach(context: Context)

Unit
onCreate(savedInstanceState: Bundle?)

Unit

Unit

Unit

Unit

Unit

Inherited functions