package app.test;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;
public class Test extends Activity implements SensorEventListener {
private SensorManager mgr;
private Sensor accelerometer;
private TextView text;
private float[] gravity = new float[3];
private float[] motion = new float[3];
private double ratio;
private double mAngle;
private int counter = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mgr = (SensorManager) this.getSystemService(SENSOR_SERVICE);
accelerometer = mgr.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
text = (TextView) findViewById(R.id.text);
}
@Override
protected void onResume() {
mgr.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_UI);
super.onResume();
}
@Override
protected void onPause() {
mgr.unregisterListener(this, accelerometer);
super.onPause();
}
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
public void onSensorChanged(SensorEvent event) {
for(int i=0; i<3; i++) {
gravity [i] = (float) (0.1 * event.values[i] + 0.9 * gravity[i]);
motion[i] = event.values[i] - gravity[i];
}
ratio = gravity[1]/SensorManager.GRAVITY_EARTH;
if(ratio > 1.0) ratio = 1.0;
if(ratio < -1.0) ratio = -1.0;
mAngle = Math.toDegrees(Math.acos(ratio));
if(gravity[2] < 0) {
mAngle = -mAngle;
}
if(counter++ % 10 == 0) {
String msg = String.format(
"Raw values\nX: %8.4f\nY: %8.4f\nZ: %8.4f\n" +
"Gravity\nX: %8.4f\nY: %8.4f\nZ: %8.4f\n" +
"Motion\nX: %8.4f\nY: %8.4f\nZ: %8.4f\nAngle: %8.1f",
event.values[0], event.values[1], event.values[2],
gravity[0], gravity[1], gravity[2],
motion[0], motion[1], motion[2],
mAngle);
text.setText(msg);
text.invalidate();
counter=1;
}
}
}
//main.xml
android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent" >
android:layout_width="fill_parent" android:layout_height="wrap_content" />