Есть активити, в котором постоянно производятся расчеты. Необходимо, чтобы при сворачивании приложения, эти расчеты продолжались.
Подскажите пожалуйста, как реализовать запуск сервиса и передачу в него параметров для расчетов при сворачивании Activity, и остановку сервиса и получение из него данных при разворачивании Activity?
Прикладываю полный листинг того, что наваял.
MainActivity
package com.example.service;
import android.app.ActivityManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.IBinder;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
public String LOG_TAG = "llog";
Button btn1, btn2, btnexit;
TextView rezultat;
private Intent serviceintent;
private SharedPreferences sPref;
private ServiceConnection sConn;
private KVService kvService;
boolean bound = false, exit = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(LOG_TAG, "onCreate");
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
btn1 = (Button)findViewById(R.id.btn1);
btn2 = (Button)findViewById(R.id.btn2);
btnexit = (Button)findViewById(R.id.btnEXIT);
rezultat = (TextView)findViewById(R.id.rezultat);
btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
btnexit.setOnClickListener(this);
serviceintent = new Intent(this, KVService.class);
sPref = getSharedPreferences("Rally", Context.MODE_PRIVATE);
startService(serviceintent);
sConn = new ServiceConnection() {
public void onServiceConnected(ComponentName name, IBinder binder) {
Log.d(LOG_TAG, "KVFragment onServiceConnected");
kvService = ((KVService.MyBinder) binder).getService();
bound = true;
}
public void onServiceDisconnected(ComponentName name) {
Log.d(LOG_TAG, "KVFragment onServiceDisconnected");
rezultat.setText(sPref.getString("KV_Pdistance", ""));
bound = false;
}
};
}
@Override
protected void onResume() {
Log.d(LOG_TAG, "KVFragment onResume");
if (bound){
Log.d(LOG_TAG, "Останавливем сервис");
//stopService(serviceintent);
unbindService(sConn);
};
//unbindService(sConn);
super.onResume();
}
@Override
protected void onPause() {
Log.d(LOG_TAG, "KVFragment onPause");
super.onPause();
}
@Override
protected void onStop() {
Log.d(LOG_TAG, "KVFragment onStop");
if (!exit & !bound) {
SharedPreferences.Editor ed = sPref.edit();
ed.putString("KV_Pdistance", "1");
ed.putString("FakeSpeed", "120.0");
ed.putString("koef", "1");
ed.apply();
Log.d(LOG_TAG, "Вызываем bindservice");
bindService(serviceintent, sConn, 0);
}
super.onStop();
}
@Override
protected void onDestroy() {
Log.d(LOG_TAG, "KVFragment onDestroy");
super.onDestroy();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
break;
case R.id.btn2:
break;
case R.id.btnEXIT:
exit =true;
stopService(serviceintent);
finish();
break;
}
}
private boolean isMyServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}
}
KVService
package com.example.service;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class KVService extends Service {
final String LOG_TAG = "llog";
Timer myTimer, StartTimer, RealTimer;
ExecutorService es;
MyBinder binder = new MyBinder();
BroadcastReceiver br;
public Double gpsSpeed = 0.0; //spped
public final static String GpsSpeed = "0";
public final static String BROADCAST_ACTION = "KVService";//gpsService
String NMEA_Speed = "0.0";
SharedPreferences sPref;
private double rdist;
private String fakespped;
private Double changetime = 10.0;
public void onCreate() {
super.onCreate();
Log.d(LOG_TAG, "KVService onCreate");
es = Executors.newFixedThreadPool(2);
sPref = getSharedPreferences("Rally", Context.MODE_PRIVATE);
}
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(LOG_TAG, "KVService onStartCommand");
return super.onStartCommand(intent, flags, startId);
}
public void onDestroy() {
super.onDestroy();
Log.d(LOG_TAG, "KVService onDestroy");
}
class RealTime implements Runnable {
public RealTime(){
}
@Override
public void run() {
//Log.i(LOG_TAG, "i = " + i++);
Log.i(LOG_TAG, "Скорость получена от сервиса GPSService = " + gpsSpeed);
gpsSpeed = Double.valueOf(fakespped);
rdist += ((gpsSpeed * (changetime / 36000)) / 100) * Double.valueOf(sPref.getString("koef", ""));//Фактически пройденное расстояние
;
}
}
public IBinder onBind(Intent arg0) {
Log.d(LOG_TAG, "KVService onBind");
final RealTime realtime = new RealTime();
rdist = Double.valueOf(sPref.getString("KV_Pdistance", ""));
fakespped = sPref.getString("FakeSpeed","");
RealTimer = new Timer();
RealTimer.schedule(new TimerTask() {
public void run() {
es.execute(realtime);
}
}, 0, 10); // каждую 1 секунду
return binder;
}
public boolean onUnbind(Intent intent) {
Log.d(LOG_TAG, "KVService onUnbind");
RealTimer.cancel();
SharedPreferences.Editor ed = sPref.edit();
ed.putString("KV_Pdistance", String.valueOf(rdist));
ed.apply();
return super.onUnbind(intent);
}
public class MyBinder extends Binder {
public KVService getService() {
return KVService.this;
}
}
}
