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POrunning app in background
 

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    <pre><code>package com.example.shake; import java.util.List; import java.util.Locale; import android.app.Activity; import android.graphics.Color; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.location.Address; import android.location.Geocoder; import android.os.Bundle; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.Toast; public class MainActivity extends Activity implements SensorEventListener { private SensorManager sensorManager; private boolean color = false; private View view; private long lastUpdate; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); view = findViewById(R.id.textView); view.setBackgroundColor(Color.GREEN); sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE); lastUpdate = System.currentTimeMillis(); } @Override public void onSensorChanged(SensorEvent event) { if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) { getAccelerometer(event); } } private void getAccelerometer(SensorEvent event) { float[] values = event.values; // Movement float x = values[0]; float y = values[1]; float z = values[2]; double latitude=0; double longitude=0; String location_message; GPSTracker gps; float accelationSquareRoot = (x * x + y * y + z * z) / (SensorManager.GRAVITY_EARTH * SensorManager.GRAVITY_EARTH); long actualTime = System.currentTimeMillis(); if (accelationSquareRoot &gt;= 2.4) // { if (actualTime - lastUpdate &lt; 200) { return; } lastUpdate = actualTime; gps=new GPSTracker(MainActivity.this); if(gps.canGetLocation()){ latitude = gps.getLatitude(); longitude = gps.getLongitude(); // \n is for new line //Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show(); Geocoder gcd = new Geocoder(MainActivity.this, Locale.getDefault()); try{ List&lt;Address&gt; addresses = gcd.getFromLocation(latitude, longitude, 1); location_message= addresses.get(0).getLocality(); if (addresses.size() &gt; 0) { Toast.makeText(getApplicationContext(), "Your Location is " +addresses.get(0).getLocality() , Toast.LENGTH_LONG).show(); } }catch(Exception e) { System.out.print(e); } }else{ // can't get location // GPS or Network is not enabled // Ask user to enable GPS/network in settings Toast.makeText(getApplicationContext(), "Switch on gps" , Toast.LENGTH_LONG).show(); gps.showSettingsAlert(); } /*Toast.makeText(this, "Device was shuffed", Toast.LENGTH_SHORT) .show(); if (color) { view.setBackgroundColor(Color.GREEN); } else { view.setBackgroundColor(Color.RED); }*/ color = !color; } } @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } @Override protected void onResume() { super.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); } @Override protected void onPause() { // unregister listener super.onPause(); sensorManager.unregisterListener(this); } } </code></pre> <p>This code gives the current location when you shake the mobile.I want to create an app that monitors the shake parameter in the background and automatically display the location.I know that it can be done by the Service class in android but being a beginner i don't know how to implement it.Is there any other way to do it? Could anyone help me out </p>
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