안드로이드 가속도센서 속도 측정 - andeuloideu gasogdosenseo sogdo cheugjeong

open coding

2021. 1. 6. 23:15

단위시간당 회전한 각도 값을 측정하는 센서. : 회전속도 측정.

주로 수평유지장치에 사용되고 있음.

........................................................

1.센서data받기 listener 다른거랑 비슷 : type을 Gyroscope로 설정하는거임.

2. Manifest : screenOrientation="portrait"

스마트폰 회전해서 측정하니, 스마트폰 화면 고정해야겠지

..............................................................................................................................................

<Manifest> screenOrientation="portrait"

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.www.gyroscopesensor">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<MainActivity>

package com.www.gyroscopesensor;

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 객체설정
        listener = new SensorListener();

    }//finish


//sensor start method -> onclick도 설정
    public void startSensor(View view){
        Sensor sensor = manager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);    //Gyrocsope센서
        //아래 만들었던 리스너 연결
        boolean chk = manager.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI);
        if(chk == false){
            textView.setText("Gyroscope 센서를 지원하지 않습니다.");
        }
    }
//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_GYROSCOPE){    //Gyroscope센서라면
             textView.setText("x축 각속도 : "+event.values[0] + "\n");
             textView.append("y축 각속도 : "+event.values[1] + "\n");
             textView.append("z축 각속도 : "+event.values[2] );
         }
     }
     @Override
     public void onAccuracyChanged(Sensor sensor, int accuracy) {//감도변화

     }
 }//finish


}

'open coding' Related Articles