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Starting app when it shakes using broadcast

What I want is that when my app is in background and I shake the phone the app should start and come on foreground!
To achieve this I have used broadcast receiver as follows :
public class BootReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
mSensorManager = (SensorManager) arg0.getSystemService(arg0.SENSOR_SERVICE);
mSensorManager.registerListener( mSensorIntentListener, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
}
}
I have registered it also as follows :
<receiver
android:name=".BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>
Now for shake event I am using this code as given below :
private final SensorEventListener mSensorIntentListener = new SensorEventListener() {
public void onSensorChanged(SensorEvent se) {
float x = se.values[0];
float y = se.values[1];
float z = se.values[2];
mAccelLast = mAccelCurrent;
mAccelCurrent = (float) Math.sqrt((double) (x*x + y*y + z*z));
float delta = mAccelCurrent - mAccelLast;
mAccel = mAccel * 0.9f + delta; // perform low-cut filter
if (mAccel > 12) {
Toast.makeText(getApplicationContext(), "Device has shaken.", Toast.LENGTH_LONG).show();
Intent intent = new Intent(getApplicationContext(), MainActivity.class)
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
}
#Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
// TODO Auto-generated method stub
}
};
Now when I try to run the app and put it on background and shake it doesn't works !
So what is the logical error and how to make my app come foreground on shake ?
One more thing I am using nested classes concept so all classes are in MainActivity class !
code full !
:
package com.example.sensorlist;
public class MainActivity extends ActionBarActivity {
TextView tv1=null;
static File file = null;
private String outputFile = null;
private float mAccel; // acceleration apart from gravity
private float mAccelCurrent; // current acceleration including gravity
private float mAccelLast; // last acceleration including gravity
Button play,stop,record;
MediaRecorder myAudioRecorder;
public SensorManager mSensorManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
play=(Button)findViewById(R.id.button3);
stop=(Button)findViewById(R.id.button2);
record=(Button)findViewById(R.id.button);
stop.setEnabled(false);
play.setEnabled(false);
final File path =
Environment.getExternalStoragePublicDirectory
(
//Environment.DIRECTORY_PICTURES
//Environment.DIRECTORY_DCIM
Environment.DIRECTORY_DCIM + "/Utkarshrecord/"
);
// Make sure the sound directory exists.
if(!path.exists())
{
path.mkdirs();
}
try {
file= File.createTempFile("sound", ".3gp", path);
myAudioRecorder=new MediaRecorder();
myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
myAudioRecorder.setOutputFile(file.getAbsolutePath());
} catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
myAudioRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
if( mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER)!=null){
Toast.makeText(getBaseContext(), "Yes it is there ", Toast.LENGTH_LONG).show();
}else{
Toast.makeText(getBaseContext(), "Sry no accelerometer", Toast.LENGTH_LONG).show();
}
mSensorManager.registerListener(mSensorListener, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
mAccel = 0.00f;
mAccelCurrent = SensorManager.GRAVITY_EARTH;
mAccelLast = SensorManager.GRAVITY_EARTH;
record.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
try {
myAudioRecorder.prepare();
myAudioRecorder.start();
}
catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
record.setEnabled(false);
stop.setEnabled(true);
Toast.makeText(getApplicationContext(), "Recording started", Toast.LENGTH_LONG).show();
}
});
stop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) throws IllegalArgumentException,SecurityException,IllegalStateException {
try{
myAudioRecorder.stop();
myAudioRecorder.release();
myAudioRecorder = null;
}catch(Exception e){
e.printStackTrace();
}
Toast.makeText(getApplicationContext(), "Audio recorded successfully",Toast.LENGTH_LONG).show();
stop.setEnabled(false);
play.setEnabled(true);
}
});
play.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) throws IllegalArgumentException,SecurityException,IllegalStateException {
MediaPlayer m = new MediaPlayer();
try {
m.setDataSource(file.getAbsolutePath());
m.prepare();
}
catch (IOException e) {
e.printStackTrace();
}
m.start();
Toast.makeText(getApplicationContext(), "Playing audio", Toast.LENGTH_LONG).show();
}
});
}
private final SensorEventListener mSensorListener = new SensorEventListener() {
public void onSensorChanged(SensorEvent se) {
float x = se.values[0];
float y = se.values[1];
float z = se.values[2];
mAccelLast = mAccelCurrent;
mAccelCurrent = (float) Math.sqrt((double) (x*x + y*y + z*z));
float delta = mAccelCurrent - mAccelLast;
mAccel = mAccel * 0.9f + delta; // perform low-cut filter
if (mAccel > 12) {
Toast.makeText(getApplicationContext(), "Device has shaken.", Toast.LENGTH_LONG).show();
try {
myAudioRecorder.prepare();
myAudioRecorder.start();
record.setEnabled(false);
stop.setEnabled(true);
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Toast.makeText(getBaseContext(), "recording has started", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
// TODO Auto-generated method stub
}
};
private final SensorEventListener mSensorIntentListener = new SensorEventListener() {
public void onSensorChanged(SensorEvent se) {
float x = se.values[0];
float y = se.values[1];
float z = se.values[2];
mAccelLast = mAccelCurrent;
mAccelCurrent = (float) Math.sqrt((double) (x*x + y*y + z*z));
float delta = mAccelCurrent - mAccelLast;
mAccel = mAccel * 0.9f + delta; // perform low-cut filter
if (mAccel > 12) {
Toast.makeText(getApplicationContext(), "Device has shaken.", Toast.LENGTH_LONG).show();
Intent intent = new Intent(getApplicationContext(), MainActivity.class)
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
}
#Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
// TODO Auto-generated method stub
}
};
#Override
protected void onPause() {
mSensorManager.unregisterListener(mSensorListener);
super.onPause();
}
#Override
protected void onResume() {
super.onResume();
mSensorManager.registerListener(mSensorListener, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public class ShakeRec extends Service{
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
}
#Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
return super.onStartCommand(intent, flags, startId);
}
}
public class BootReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
mSensorManager = (SensorManager) arg0.getSystemService(arg0.SENSOR_SERVICE);
mSensorManager.registerListener( mSensorIntentListener, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
}
}
}

Your <receiver> element will not work. If you were to look at LogCat on a reboot, you would see warnings or errors from Android, saying that it cannot find your BootReceiver class. A manifest-registered receiver cannot be a nested class inside of an activity.
Get rid of the <receiver> element. Get rid of BootReceiver. Register your SensorEventListener in onCreate() of your activity. So long as your process is running (which may not be very long), and so long as the device is turned on, you should receive sensor events.

To capture shakes you should use always-on low power sensors, registered in a wakelocked sticky service. To reach a great amount of devices, your app should find what of that low power sensors are available in the phone. And then use the best combination, minimizing battery power drain. You will need also to ensure your app is whitelisted for battery optimization, so your app can survive in background.

Service and Notification refreshed when Activity is closed

I have a Service with a Notification with a Progress Bar inside. This Service is started when i open the Main Activity and works fine. But, when i close Main Activity (onDestroy() is called) the Notification is like refreshed. This is the code of my Service.
#Override
public void onCreate() {
super.onCreate();
Mypreferences prefs = new Mypreferences(this);
String minutes = prefs.getStringValueOf("Minutes");
final NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
final NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
d = Integer.valueOf(minutes)*60;
builder.setSmallIcon(R.drawable.ic_action_about);
builder.setContentTitle(getString(R.string.app_name));
new Thread(new Runnable() {
#Override
public void run() {
// TODO Auto-generated method stub
for(int i=0;i<d;i++) {
builder.setProgress(d, d-i, false);
builder.setContentInfo(d-i+"/"+d);
notificationManager.notify(0, builder.build());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}).start();
Integer d it's 60 and countdown works fine but when i close MainActivity if for example ProgressBar is at 40, return to 60. Why? How can i solve?
Service code
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
super.onCreate();
pref = new SharedPref(this);
map = pref.getAllPrefs();
boolean delay = pref.loadBooleanPref("delay");
String delayTime = pref.loadStringValue("DelayTime");
if(delay && delayTime != null) {
new CountDownTimer(TimeUnit.MINUTES.toMillis(Long.valueOf(delayTime)), 1000) {
#Override
public void onTick(long millisUntilFinished) {
// TODO Auto-generated method stub
}
#Override
public void onFinish() {
// TODO Auto-generated method stub
getInfo();
}
}.start();
} else {
getInfo();
}
}

Implement both gyroscope and accelerometer?

I want to get the values of the gyroscope and accelerometer in the phone.
The following is my code
public class MainActivity extends Activity implements SensorEventListener{
private SensorManager sensorManager;
private long lastUpdate;
private GPSTracker gpss;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
lastUpdate = System.currentTimeMillis();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
#Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER && event.sensor.getType() == Sensor.TYPE_GRAVITY) {
getAccelerometer(event);
}
}
private void getAccelerometer(SensorEvent event) {
// TODO Auto-generated method stub
float[] values = event.values;
// Movement
float x = values[0];
float y = values[1];
float z = values[2];
float accelationSquareRoot = (x * x + y * y + z * z)
/ (SensorManager.GRAVITY_EARTH * SensorManager.GRAVITY_EARTH);
long actualTime = System.currentTimeMillis();
if (accelationSquareRoot >= 10) //
{
if (actualTime - lastUpdate < 200) {
return;
}
lastUpdate = actualTime;
gpss = new GPSTracker(MainActivity.this);
if(gpss.canGetLocation()){
double latitude = gpss.getLatitude();
double longitude = gpss.getLongitude();
// \n is for new line
Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
}else{
// can't get location
// GPS or Network is not enabled
// Ask user to enable GPS/network in settings
gpss.showSettingsAlert();
}
}
}
#Override
protected void onResume() {
super.onResume();
// register this class as a listener for the orientation and
// accelerometer sensors
Sensor gsensor = sensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY);
Sensor asensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
sensorManager.registerListener(this,
gsensor,
SensorManager.SENSOR_DELAY_NORMAL);
sensorManager.registerListener(this,
asensor,
SensorManager.SENSOR_DELAY_NORMAL);
}
#Override
protected void onPause() {
// unregister listener
super.onPause();
sensorManager.unregisterListener(this);
}
}
The code works fine if I use
#Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
getAccelerometer(event);
}
}
But when I include the *TYPE_GRAVITY* it doesn't work. I think I am making the mistake in the getType() function. Could someone tell me the correct syntax to detect two events simultaneously?

In your code here:
#Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER
&& event.sensor.getType() == Sensor.TYPE_GRAVITY) {
getAccelerometer(event);
}
}
You're getting the value for the event's type and asking if it's two different things at once. It's no different than having:
int a = 1;
if (a == 1 && a == 2) { ... }
Every SensorEvent is going to have exactly one type. If you want to call your method in either case, use || instead of && in your conditional.
If you want to act independently then you need to have two checks. switch() is a good way to go:
#Override
public void onSensorChanged(SensorEvent event) {
switch(event.sensor.getType()) {
case Sensor.TYPE_ACCELEROMETER:
getAccelerometer(event);
break;
case Sensor.TYPE_GRAVITY:
doSomethingDifferent();
break;
}
}
}

Service not stop after click

I've got a service that starts when i click a toggle button. It works well but when i click again the toggle i would expect the service stops but doesn't work. The service still go. This is the button(I'm using the preferences to save the state of the button):
check = (ToggleButton)v.findViewById(R.id.check1);
final SharedPreferences preferences = getActivity().getPreferences(Context.MODE_PRIVATE);
boolean tgprefshake = preferences.getBoolean("tgprefshake", false); //default is true
check.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){ //do this}
Log.d("Service", "onClick: starting srvice");
myService = new Intent(getActivity(), shakeService.class);
//getActivity().startService(new Intent(getActivity(), shakeService.class));
getActivity().startService(myService);
SharedPreferences.Editor editor = preferences.edit();
editor.putBoolean("tgprefshake", true); // value to store
editor.commit();
} else {
Log.d("Service", "onClick: stopping srvice");
//getActivity().stopService(new Intent(getActivity(), shakeService.class));
getActivity().stopService(myService);
SharedPreferences.Editor editor = preferences.edit();
editor.putBoolean("tgprefshake", false); // value to store
editor.commit();
}
}
});
if (tgprefshake) //if (tgpref) may be enough, not sure
{
check.setChecked(true);
}
else
{
check.setChecked(false);
}
And the service:
public class shakeService extends Service implements SensorEventListener{
// Sensors
public SensorManager sensorManager;
private long lastUpdate;
public ToggleButton check ;
public Sensor mAccelerometer;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
public void onCreate()
{
Log.d("", "onCreate");
super.onCreate();
}
public void onDestroy() {
Toast.makeText(this, "Service Stopped", Toast.LENGTH_LONG).show();
Log.d("Service", "onDestroy");
}
public void onStart(Intent intent, int startId)
{
sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
sensorManager.registerListener(this,
sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
SensorManager.SENSOR_DELAY_NORMAL);
lastUpdate = System.currentTimeMillis();
}
#Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
// TODO Auto-generated method stub
}
#Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
getWifiVibrating(event);
}
}
private void getWifiVibrating(SensorEvent event) {
//myVib.vibrate(50);
final WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
float[] values = event.values;
// Movement
float x = values[0];
float y = values[1];
float z = values[2];
float accelationSquareRoot = (x * x + y * y + z * z)
/ (SensorManager.GRAVITY_EARTH * SensorManager.GRAVITY_EARTH);
long actualTime = System.currentTimeMillis();
if (accelationSquareRoot >= 3) {
if (actualTime - lastUpdate < 600) {
return;
}
lastUpdate = actualTime;
wifiManager.setWifiEnabled(true);
Toast.makeText(this, "Wi-fi On", Toast.LENGTH_SHORT)
.show();
}
}
public void onResume() {
// register this class as a listener for the orientation and
// accelerometer sensors
sensorManager.registerListener(this,
sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
SensorManager.SENSOR_DELAY_NORMAL);
}
public void onPause() {
// unregister listener
sensorManager.unregisterListener(this);
}
Where is the error? It shows me "Service Stopped" when i turn off the toggle but still the service still works.

Call super.onDestroy() in the end of the service's onDestroy() impementation.

Have U think about memory leak? Every time onResume, U register the service as listener.

stopService() can not stop Service right now in android. The system will stop it completely in a proper time.

Thread and Loop.prepare() issue

I can't get this to work.
The problem is, the Thread is never notified that the listener is done searching for a location.
final ProgressDialog progress = new ProgressDialog(this);
progress.setTitle("Procurando");
progress.setMessage("Localizando o dispositivo.");
progress.show();
Thread thread = new Thread(new Runnable() {
public void run() {
// TODO Auto-generated method stub
GeoLocationHandler handler = new GeoLocationHandler();
try {
synchronized (handler) {
Looper.prepare();
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,handler);
handler.wait();
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
progress.dismiss();
mLocationManager.removeUpdates(handler);
double lat = mLocation.getLatitude();
double lng = mLocation.getLongitude();
Intent intent = new Intent(android.content.Intent.ACTION_VIEW,Uri.parse("http://maps.google.com/maps?saddr=" + lat + "," + lng + "&daddr=-22.858114, -43.231295"));
startActivity(intent);
}
}
thread.start();
Here is the class implementing LocationListener:
private class GeoLocationHandler implements LocationListener {
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
mLocation = location;
notify();
}
}

Figured out the solution, not quiet the way I wanted, but it works.
Created progress dialog as a field and dismissed it through a handler.
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.ibMap:
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setTitle("Procurando");
mProgressDialog.setMessage("Localizando o dispositivo.");
mProgressDialog.show();
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mGeoHandler);
break;
default:
Toast.makeText(getBaseContext(), "Nothing yet.", Toast.LENGTH_SHORT).show();
}
}
private class GeoLocationHandler implements LocationListener {
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
mLocation = location;
mHandler.sendEmptyMessage(0);
}
}
private class MyHandler extends Handler {
#Override
public void dispatchMessage(Message msg) {
mProgressDialog.dismiss();
double lat = mLocation.getLatitude();
double lng = mLocation.getLongitude();
Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse("http://maps.google.com/maps?saddr=" + lat + "," + lng + "&daddr=UFRJ,RJ"));
startActivity(intent);
super.dispatchMessage(msg);
}
}

The issue is you're not calling notify() from a synchronized block. If you want to try to get your original solution working, try this
private class GeoLocationHandler implements LocationListener {
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
mLocation = location;
synchronized(handler){
notify();
}
}
}