MainActivity.java
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package com.dinhcv.lifelogpedometer.activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.dinhcv.lifelogpedometer.R;
public class MainActivity extends AppCompatActivity implements SensorEventListener, StepListener {
private TextView tvSteps;
private Button btnStart;
private Button btnStop;
private StepDetector simpleStepDetector;
private SensorManager sensorManager;
private Sensor accel;
private static final String TEXT_NUM_STEPS = "Number of Steps: ";
private int numSteps;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get an instance of the SensorManager
sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
accel = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
simpleStepDetector = new StepDetector();
simpleStepDetector.registerListener(this);
tvSteps = (TextView) findViewById(R.id.tv_steps);
btnStart = (Button) findViewById(R.id.btn_start);
btnStop = (Button) findViewById(R.id.btn_stop);
btnStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
numSteps = 0;
sensorManager.registerListener(MainActivity.this, accel, SensorManager.SENSOR_DELAY_FASTEST);
}
});
btnStop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
sensorManager.unregisterListener(MainActivity.this);
}
});
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
@Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
simpleStepDetector.updateAccel(
event.timestamp, event.values[0], event.values[1], event.values[2]);
}
}
@Override
public void step(long timeNs) {
numSteps++;
tvSteps.setText(TEXT_NUM_STEPS + numSteps);
}
}