[Android] 가속도센서(Acceleration Sensor) 소스

- 환경

1. Android Studio 2.3.1

2. LG Watch Urbane 2

3. Android 6.0.1 / API 23

- MainActivity

package com.example.vip.hammer;

import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.support.wearable.view.WatchViewStub;
import android.util.Log;
import android.widget.TextView;

public class MainActivity extends Activity {

    private TextView text_x, text_y, text_z, text_vector;

    //Using the Accelometer & Gyroscoper
    private SensorManager mSensorManager = null;

    //Using the Accelometer
    private SensorEventListener mAccLis;
    private Sensor mAccelometerSensor = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);

        //Using the Gyroscope & Accelometer
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);

        //Using the Accelometer
        mAccelometerSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        mAccLis = new AccelometerListener();
        
        // 센서 받는 속도
        mSensorManager.registerListener(mAccLis, mAccelometerSensor, SensorManager.SENSOR_DELAY_NORMAL); 
        
        stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() {
            @Override
            public void onLayoutInflated(WatchViewStub stub) {
                text_x = (TextView) stub.findViewById(R.id.textView);
                text_y = (TextView) stub.findViewById(R.id.textView2);
                text_z = (TextView) stub.findViewById(R.id.textView3);
                text_vector = (TextView) stub.findViewById(R.id.textView4);
            }
        });
    }

    @Override
    public void onPause(){
        super.onPause();
        Log.e("LOG", "onPause()");
        mSensorManager.unregisterListener(mAccLis);
    }

    @Override
    public void onDestroy(){
        super.onDestroy();
        Log.e("LOG", "onDestroy()");
        mSensorManager.unregisterListener(mAccLis);
    }

    private class AccelometerListener implements SensorEventListener {
        @Override
        public void onSensorChanged(SensorEvent event) {

            double accX = event.values[0];
            double accY = event.values[1];
            double accZ = event.values[2];

            double x = Double.parseDouble(String.format("%.3f", accX));
            double y = Double.parseDouble(String.format("%.3f", accY));
            double z = Double.parseDouble(String.format("%.3f", accZ));
            double sum = (x*x) + (y*y) + (z*z);
            double root = Math.sqrt(sum);

            root = Double.parseDouble(String.format("%.3f", root));

            text_x.setText("X : " + x);
            text_y.setText("Y : " + y);
            text_z.setText("Z : " + z);
            text_vector.setText("Vector : " + root);

            double angleXZ = Math.atan2(accX,  accZ) * 180/Math.PI;
            double angleYZ = Math.atan2(accY,  accZ) * 180/Math.PI;

            Log.e("LOG", "ACCELOMETER           [X]:" + String.format("%.4f", event.values[0])
                    + "           [Y]:" + String.format("%.4f", event.values[1])
                    + "           [Z]:" + String.format("%.4f", event.values[2])
                    + "           [angleXZ]: " + String.format("%.4f", angleXZ)
                    + "           [angleYZ]: " + String.format("%.4f", angleYZ));

        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {

        }
    }
}

- round_activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.vip.hammer.MainActivity"
    tools:deviceIds="wear_round">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_round"
        android:layout_above="@+id/textView2"
        android:layout_alignStart="@+id/textView2" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_round"
        android:layout_centerVertical="true"
        android:layout_alignStart="@+id/textView3" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_round"
        android:layout_below="@+id/textView2"
        android:layout_centerHorizontal="true" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_round"
        android:layout_below="@+id/textView3"
        android:layout_alignStart="@+id/textView3" />
</RelativeLayout>