TriggerEventListener Class

Definition

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

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

Inheritance

Object

Object

TriggerEventListener

Attributes

RegisterAttribute

Remarks

This class is the listener used to handle Trigger Sensors. Trigger Sensors are sensors that trigger an event and are automatically disabled. Sensor#TYPE_SIGNIFICANT_MOTION is one such example.

SensorManager lets you access the device's android.hardware.Sensor sensors. Get an instance of SensorManager by calling android.content.Context#getSystemService(java.lang.String) Context.getSystemService() with the argument android.content.Context#SENSOR_SERVICE.

Here's an example setup for a TriggerEventListener:

class TriggerListener extends TriggerEventListener {
                public void onTrigger(TriggerEvent event) {
                     // Do Work.

                // As it is a one shot sensor, it will be canceled automatically.
                // SensorManager.requestTriggerSensor(this, mSigMotion); needs to
                // be called again, if needed.
                }
            }
            public class SensorActivity extends Activity {
                private final SensorManager mSensorManager;
                private final Sensor mSigMotion;
                private final TriggerEventListener mListener = new TriggerEventListener();

                public SensorActivity() {
                    mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
                    mSigMotion = mSensorManager.getDefaultSensor(Sensor.TYPE_SIGNIFICANT_MOTION);
                }

                protected void onResume() {
                    super.onResume();
                    mSensorManager.requestTriggerSensor(mListener, mSigMotion);
                }

                protected void onPause() {
                    super.onPause();
                    // Call disable to ensure that the trigger request has been canceled.
                    mSensorManager.cancelTriggerSensor(mListener, mSigMotion);
                }

            }

Java documentation for android.hardware.TriggerEventListener.

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

Properties

Methods

Explicit Interface Implementations

Extension Methods

Applies to