Android: onshake with password screen

Question

I am implementing a sensoreventlistener.

Whenever the device is shaked I want to provide a password screen.

I need some suggestion on how to implement it. What I am doing is I am inflateing password layout in onShake method can I do that?

The password layout should look like general passcode lock we used in devices..(giving 4 digits)

Any suggestions will be appreciated.

Below is my ShakeListener Activity

public   class ShakeListenerTestActivity extends Activity 
{
  private ShakeListener mShaker;
  private EditText password;

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);              


    mShaker = new ShakeListener(this);
    mShaker.setOnShakeListener(new ShakeListener.OnShakeListener () {
      public void onShake()
      {


   Toast.makeText(ShakeListenerTestActivity.this, password.getText(),
            Toast.LENGTH_SHORT).show();

      }

    });

  }

  public void onResume()
  {
    mShaker.resume();
    super.onResume();
  }

  @Override
  public void onPause()
  {
    mShaker.pause();
    super.onPause();  
  } 
}

Answer 1

Yes logically speaking you should be able to inflate a layout in OnShake method , or you could even start a activity containing the password view. In onShake method just start a new activity which contains the password view and then based on the input from user you can decide what to do next !

Edit:

How to detect shake event with android?

Have a look at that & you will find how to detect a shake so after detecting a shake you just need to start a new Activity :)

Let me know if you need more help

Edit 2:

Some code snippets how i think it will work :

public class ShakeActivity extends Activity implements SensorListener

sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);

sensorMgr.registerListener(this,
SensorManager.SENSOR_ACCELEROMETER,
SensorManager.SENSOR_DELAY_UI);

public void onSensorChanged(int sensor, float[] values) {
if (sensor == SensorManager.SENSOR_ACCELEROMETER) {
long curTime = System.currentTimeMillis();
// only allow one update every 100ms.
if ((curTime - lastUpdate) > 100) {
long diffTime = (curTime - lastUpdate);
lastUpdate = curTime;

x = values[SensorManager.DATA_X];
y = values[SensorManager.DATA_Y];
z = values[SensorManager.DATA_Z];

float speed = Math.abs(x+y+z – last_x – last_y – last_z) / diffTime * 10000;

if (speed > SHAKE_THRESHOLD) {
Log.d(”sensor”, “shake detected w/ speed: ” + speed);
Toast.makeText(this, “shake detected w/ speed: ” + speed, Toast.LENGTH_SHORT).show();
Intent i = new Intent(this, newActivity.class);
startActivity(i);
}
last_x = x;
last_y = y;
last_z = z;
  }
 }
}

That should solve your problem ! Also register the second activity in the Manifest. Hope this helps!

Also almost the entire code above was from Here , so thanks to original poster !