package com.example.pahoappv2;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
public class Accelerometer {
    public interface Listener {
        void onTranslation(float tx, float ty, float tz);
    }
    private Listener listener;
    public void setListener(Listener l) {
        listener = l;
    }
    private SensorManager sensorManager;
    private Sensor sensor;
    private SensorEventListener sensorEventListener;
    Accelerometer(Context context) {
        sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
        sensor = sensorManager.getDefaultSensor(Sensor.TYPE_LINEAR_ACCELERATION);
        if (sensor == null) System.out.println("sensor not found"); // debug message
        sensorEventListener = new SensorEventListener() {
            @Override
            public void onSensorChanged(SensorEvent sensorEvent) {
                if (listener != null) {
                    listener.onTranslation(sensorEvent.values[0], sensorEvent.values[1], sensorEvent.values[2]);
                }
            }
            @Override
            public void onAccuracyChanged(Sensor sensor, int i) {
            }
        };
    }
    public void register() {
        sensorManager.registerListener(sensorEventListener, sensor, SensorManager.SENSOR_DELAY_NORMAL);
    }
    public void unregister() {
        sensorManager.unregisterListener(sensorEventListener);
    }
}

private Accelerometer accelerometer;
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        accelerometer = new Accelerometer(this);
        accelerometer.setListener(new Accelerometer.Listener() {
            @Override
            public void onTranslation(float tx, float ty, float tz) {
                //getting data and doing smt
            }
        });
    ...
    ...
    ...
    }

public class ExampleService extends Service {
    Accelerometer accelerometer; // working
    accelerometer = new Accelerometer(this); // working
    accelerometer.setListener( // IDE cant see setListener method
         new Accelerometer.Listener() {
         @Override
         public void onTranslation(float tx, float ty, float tz) {
             // get data
         }
    });
    ...
    ...
    ...
}

public class ExampleService extends Service {
    @Override
    public void onCreate() {
        super.onCreate();
        Accelerometer accelerometer; // 正在工作
        accelerometer = new Accelerometer(this); // 正在工作
        accelerometer.setListener(
            new Accelerometer.Listener() {
                @Override
                public void onTranslation(float tx, float ty, float tz) {
                    // 获取数据
                }
            });
    }
    // ...
    // ...
    // ...
}