Sfruttare accellerometro nelle app android

Volete integrare l’uso dell’accellerometro nella vostra app android?

Vi basterà seguire questi 2 semplici passi:

1. Creare una activity Accellerometro.java
2. Creare un layout Accellerometro.xml

L’activity Accellerometro.java

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;

public class Accellerometro extends Activity implements SensorEventListener {
private TextView Asse1;
private TextView Asse2;
private TextView Asse3;
private SensorManager sensorManager;
double ax,ay,az;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Asse1=(TextView) findViewById(R.id.asse1);
Asse2=(TextView) findViewById(R.id.asse2);
Asse3=(TextView) findViewById(R.id.asse3);
sensorManager=(SensorManager) getSystemService(SENSOR_SERVICE);
sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
}
public void onAccuracyChanged(Sensor arg0, int arg1) {
}

public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){
ax=event.values[0];
ay=event.values[1];
az=event.values[2];
String assex=+ax+”";
String assey=+ay+”";
String assez=+az+”";
Asse1.setText(“Asse x=”+assex);
Asse2.setText(“Asse y=”+assey);
Asse3.setText(“Asse z=”+assez);
}
}

}

Il Layout Accellerometro.xml

<RelativeLayout xmlns:android=”http://schemas.android.com/apk/res/android&#8221;
xmlns:tools=”http://schemas.android.com/tools&#8221;
android:layout_width=”match_parent”
android:layout_height=”match_parent”
tools:context=”.Accellerometro” >

<TextView
android:id=”@+id/asse1″
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:layout_alignParentLeft=”true”
android:layout_alignParentTop=”true”
android:layout_marginLeft=”60dp”
android:layout_marginTop=”36dp”
android:text=”TextView” />

<TextView
android:id=”@+id/asse2″
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:layout_alignLeft=”@+id/asse1″
android:layout_below=”@+id/asse1″
android:layout_marginTop=”26dp”
android:text=”TextView” />

<TextView
android:id=”@+id/asse3″
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:layout_alignLeft=”@+id/asse2″
android:layout_below=”@+id/asse2″
android:layout_marginTop=”24dp”
android:text=”TextView” />

</RelativeLayout>

Una volta avviata l’activity vedrete a video i valori dei 3 assi dell’accellerometro!