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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.hardware;
     18 
     19 /**
     20  * Used for receiving notifications from the SensorManager when
     21  * sensor values have changed.
     22  */
     23 public interface SensorEventListener {
     24 
     25     /**
     26      * Called when sensor values have changed.
     27      * <p>See {@link android.hardware.SensorManager SensorManager}
     28      * for details on possible sensor types.
     29      * <p>See also {@link android.hardware.SensorEvent SensorEvent}.
     30      *
     31      * <p><b>NOTE:</b> The application doesn't own the
     32      * {@link android.hardware.SensorEvent event}
     33      * object passed as a parameter and therefore cannot hold on o it.
     34      * The object may be part of an internal pool and may be reused by
     35      * the framework.
     36      *
     37      * @param event the {@link android.hardware.SensorEvent SensorEvent}.
     38      */
     39     public void onSensorChanged(SensorEvent event);
     40 
     41     /**
     42      * Called when the accuracy of a sensor has changed.
     43      * <p>See {@link android.hardware.SensorManager SensorManager}
     44      * for details.
     45      *
     46      * @param accuracy The new accuracy of this sensor
     47      */
     48     public void onAccuracyChanged(Sensor sensor, int accuracy);
     49 }
     50