Android 氣壓測試 範例

 紀錄一下Android 氣壓測試小範例 : 

import android.content.Context;

import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;

public class MainActivity extends AppCompatActivity implements SensorEventListener {
    private SensorManager mSensorManager = null;
    private Sensor mSensor;

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

        this.mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        mSensor = this.mSensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE);
        mSensorManager.registerListener(this, this.mSensor, SensorManager.SENSOR_DELAY_NORMAL);

    }


    @Override
    public void onSensorChanged(SensorEvent event) {
        System.out.println("PRESSURE : " + String.valueOf(event.values[0]));
    }

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

    }
    @Override
    protected void onResume() {
        // Register a listener for the sensor.
        mSensorManager.registerListener(this, this.mSensor, SensorManager.SENSOR_DELAY_NORMAL);
        super.onResume();

    }

    @Override
    protected void onPause() {
        // Be sure to unregister the sensor when the activity pauses.
        super.onPause();
        mSensorManager.unregisterListener(this);
    }
}