open coding. 안드로이드 스튜디오 기압센서 기본코딩 atmospheric pressuresensor

package com.www.atmosphericpressure;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {

    //define variables
    TextView textView;

    SensorManager manager;
    SensorListener listener;

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

        //connect to xml
        textView = findViewById(R.id.textView);

        manager = (SensorManager) getSystemService(SENSOR_SERVICE); //각 객체 설정
        listener = new SensorListener();
    }//finish

//sensor start method -> onclick도 설정
    public void startSensor(View view){
        Sensor sensor = manager.getDefaultSensor(Sensor.TYPE_PRESSURE);    //기압 센서
        //아래 만들었던 리스너 연결
        manager.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI);
        }


//sensor stop method -> onclick 도 설정
    public void stopSensor(View view){
        manager.unregisterListener(listener);
    }



//sensor data 받기 listener 설정
    class SensorListener implements SensorEventListener {
        @Override
        public void onSensorChanged(SensorEvent event) {//센서변화
            if(event.sensor.getType() == Sensor.TYPE_PRESSURE){    //기압 센서라면
                textView.setText("현재 기압 : "+event.values[0] + "millibar");
            }
        }
        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {//감도변화

        }
    }//finish
    
    
}