Utilizzo Giroscopio

[chri13]

Ciao a tutti!

Non riesco a capire come funziona esattamente il Giroscopio. Attualmente ho utilizzato il seguente codice:


public class MainActivity exten<span class="forTooltip">ds</span> Activity implements SensorEventListener {<br /> <br /> private TextView tv;<br /> private SensorManager mSensorManager;<br /> private Sensor mGyroSensor;<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> pr<span class="forTooltip">ot</span>ected void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.activity_main);<br /> <br /> tv= (TextView)findViewById(R.id.txt2);<br /> // Get an instance of the sensor service<br /> mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);<br /> mGyroSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSC<span class="forTooltip">OP</span>E);<br /> <br /> PackageManager <span class="forTooltip">PM</span>= this.getPackageManager();<br /> boolean gyro = PM.hasSystemFeature(PackageManager.FEATURE_SENSOR_GYROSC<span class="forTooltip">OP</span>E);<br /> boolean light = PM.hasSystemFeature(PackageManager.FEATURE_SENSOR_LIGHT);<br /> <br /> if(gyro){<br /> <br /> if(light){<br /> Toast.makeText(getApplicationContext(),"B<span class="forTooltip">ot</span>h light and gyroscope sensors are present", Toast.LENGTH_LONG).show();<br /> }<br /> else<br /> Toast.makeText(getApplicationContext(),"Only gyroscope sensor is present", Toast.LENGTH_LONG).show();<br /> <br /> }<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public final void onAccuracyChanged(Sensor sensor, int accuracy) {<br /> // Do something if sensor accuracy changes.<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public final void onSensorChanged(SensorEvent event) {<br /> <br /> float angularXSpeed = event.values[0];<br /> tv.setText("Angular X speed level is: " + "" +angularXSpeed);<br /> <br /> for (int i=0;i<event.values.length;i++){<br /> tv.setText("asseX:"+event.values[0]+" asseY:"+event.values[1]+" asseZ:"+event.values[2]);<br /> }<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected void onResume() {<br /> // Register a listener for the sensor.<br /> super.onResume();<br /> mSensorManager.registerListener(this, mGyroSensor, SensorManager.SENSOR_DELAY_NORMAL);<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected void onPause() {<br /> // important to unregister the sensor when the activity pauses.<br /> super.onPause();<br /> mSensorManager.unregisterListener(this);<br /> }<br /> <br />

 

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public class MainActivity extends Activity implements SensorEventListener {

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​

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    private TextView tv;

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    private SensorManager mSensorManager;

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    private Sensor mGyroSensor;

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​

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    @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a>

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    protected void onCreate(Bundle savedInstanceState) {

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        super.onCreate(savedInstanceState);

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        setContentView(R.layout.activity_main);

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​

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        tv= (TextView)findViewById(R.id.txt2);

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        // Get an instance of the sensor service

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        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);

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        mGyroSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);

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​

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        PackageManager PM= this.getPackageManager();

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        boolean gyro = PM.hasSystemFeature(PackageManager.FEATURE_SENSOR_GYROSCOPE);

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        boolean light = PM.hasSystemFeature(PackageManager.FEATURE_SENSOR_LIGHT);

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​

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        if(gyro){

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​

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            if(light){

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                Toast.makeText(getApplicationContext(),"Both light and gyroscope sensors are present", Toast.LENGTH_LONG).show();

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            }

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            else

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                Toast.makeText(getApplicationContext(),"Only gyroscope sensor is present", Toast.LENGTH_LONG).show();

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​

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        }

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    }

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​

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    @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a>

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    public final void onAccuracyChanged(Sensor sensor, int accuracy) {

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        // Do something if sensor accuracy changes.

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    }

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​

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    @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a>

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    public final void onSensorChanged(SensorEvent event) {

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​

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        float angularXSpeed = event.values[0];

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        tv.setText("Angular X speed level is: " + "" +angularXSpeed);

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​

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        for (int i=0;i<event.values.length;i++){

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            tv.setText("asseX:"+event.values[0]+"  asseY:"+event.values[1]+"  asseZ:"+event.values[2]);

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        }

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    }

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​

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    @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a>

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    protected void onResume() {

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        // Register a listener for the sensor.

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        super.onResume();

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        mSensorManager.registerListener(this, mGyroSensor, SensorManager.SENSOR_DELAY_NORMAL);

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    }

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​

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    @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a>

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    protected void onPause() {

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        // important to unregister the sensor when the activity pauses.

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        super.onPause();

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        mSensorManager.unregisterListener(this);

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    }

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​

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​

Nella text View che comprare nell'interfaccia ci sono i valori dei tre assi X Y Z.
Il problema è che questi valori cambiano in continuazione e rapidamente, peraltro con valori molto distanti tra di loro (ad esempio da "0,XX..." a "9,XX..." improvvisamente), il tutto ovviamente senza muovere il tablet.
Quindi immagino che il mio approccio non siacorretto.

Qualcuno potrebbe aiutarmi?

Vi ringrazio molto..

Saluti!