Android - Motion Sensors

Motion Sensors

developer : https://developer.android.com/guide/topics/sensors/sensors_motion.html

* 센서 동작 기본 흐름

 1. SensorManger 생성 

 2. Sensor 객체 생성( 내가 사용할 Sensor Type 선택 )

 3. Sensor Listener 작성

 4. Listener 등록 및 Sensor 값 받기 

 5. Listener 해제 (배터리 사용량을 위해 반드시 해제)

 - 동작 속도

FASTEST, GAME, UI, NORMAL

 - 정확도 

HIGH, MEDIUM, LOW 

MainAcitivity.java

public class MainActivity extends AppCompatActivity implements SensorEventListener { Sensor acc, light,stepCount; SensorManager maanager; TextView tvAcc, tvLight,tvStepCount; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tvAcc = (TextView) findViewById(R.id.accValue); tvLight = (TextView) findViewById(R.id.lightValue); tvStepCount = (TextView) findViewById(R.id.stepValue); maanager = (SensorManager) getSystemService(SENSOR_SERVICE); acc = maanager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); light = maanager.getDefaultSensor(Sensor.TYPE_LIGHT); stepCount = maanager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER); } @Override public void onSensorChanged(SensorEvent event) { synchronized (this){ float x = 0; float y = 0; float z = 0; switch (event.sensor.getType()){ case Sensor.TYPE_ACCELEROMETER : x = event.values[0]; y = event.values[1]; z = event.values[2]; tvAcc.setText("x= "+x+", y= "+y+", z= "+z); break; case Sensor.TYPE_LIGHT : x = event.values[0]; y = event.values[1]; z = event.values[2]; tvLight.setText("x= "+x+", y= "+y+", z= "+z); break; case Sensor.TYPE_STEP_COUNTER : x = event.values[0]; tvStepCount.setText("step : "+x); break; } } } @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } @Override protected void onResume() { super.onResume(); maanager.registerListener(this, acc, SensorManager.SENSOR_DELAY_NORMAL); maanager.registerListener(this, light, SensorManager.SENSOR_DELAY_NORMAL); maanager.registerListener(this, stepCount, SensorManager.SENSOR_DELAY_NORMAL); } @Override protected void onPause() { super.onPause(); maanager.unregisterListener(this); } }

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:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.baekcedar.android.sensor_basic01.MainActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Light" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:id="@+id/light" /> <TextView android:text="accelerometer" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/lightValue" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:id="@+id/textView3" /> <TextView android:text="value" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/lightValue" android:textAppearance="@style/TextAppearance.AppCompat.Large" android:layout_below="@+id/light" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" /> <TextView android:text="value" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/textView3" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:id="@+id/accValue" android:textAppearance="@style/TextAppearance.AppCompat.Large" /> <TextView android:text="StepCount" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/accValue" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:id="@+id/textView5" /> <TextView android:text="value" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/stepValue" android:textAppearance="@style/TextAppearance.AppCompat.Large" android:layout_below="@+id/textView5" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" /> </RelativeLayout>