[모바일프로그래밍] 13-2 센서로부터 데이터 읽기

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:text="Orientation Sensor Test"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

 

MainActivity.java

package com.example.myapplication;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity implements SensorEventListener {

    private SensorManager smanager;
    private Sensor myOrientation;
    private TextView mytext;
    private SensorEventListener mylistener;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        smanager = (SensorManager) getSystemService(SENSOR_SERVICE);
        myOrientation = smanager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
        mytext = (TextView) findViewById(R.id.textView1);
        mylistener = new SensorEventListener() {
            @Override
            public void onSensorChanged(SensorEvent sensorEvent) {
                if (sensorEvent.sensor.getType() == Sensor.TYPE_ORIENTATION) {
            		mytext.setText("방향 센서의 값을 출력합니다. \n" + "\n 방향각 : " + sensorEvent.values[0] +
                	    "\n 피치 : " + sensorEvent.values[1] + "\n 롤 : " + sensorEvent.values[2]);
        		}
            }

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

            }
        };
    }

    protected void onResume() {
        super.onResume();
        smanager.registerListener(mylistener, myOrientation, SensorManager.SENSOR_DELAY_UI);
    }

    protected void onPause() {
        super.onPause();
        smanager.unregisterListener(mylistener);
    }

    @Override
    public void onSensorChanged(SensorEvent sensorEvent) {
        if (sensorEvent.sensor.getType() == Sensor.TYPE_ORIENTATION) {
            mytext.setText("방향 센서의 값을 출력합니다. \n" + "\n 방향각 : " + sensorEvent.values[0] +
                    "\n 피치 : " + sensorEvent.values[1] + "\n 롤 : " + sensorEvent.values[2]);
        }
    }

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

    }
}

 

실제 기기에서 테스트하면 방향각과 피치도 바뀌는 것을 확인할 수 있다.