onDestroy（）没有被调用：
启动应用后，会创建MainActivity，启动后台跟踪服务。另一方面，用户可以使用主活动中的复选框列表来选择他感兴趣的路线，其中复选框列表的项目表示路线。
单击提交按钮后，alarmManager每30秒开始向IntentService类发送数据。随后，建立与服务器的连接，并在用户自动重定向到MapActivity后开始向MapActivity检索数据。
用户可以使用两个活动菜单中的图标来停止和启动后台服务。在下面描述的案例中，我面临着破坏应用程序的问题。
使用当前代码：
onDestroy()。此处，应用会再次打开地图视图。但是当我做以下事情时：
在onStart()之后将startService（i）（作为下面的四行代码片段）添加到MapActivity中的bindService我可以销毁应用程序以及停止和启动服务但这里的问题是我不想要的每次从MainActivity转到MapActivity时启动服务，因为如果用户在MainActivity中停止服务，它必须在从主要地图到地图时保持关闭状态。
@Override
protected void onStart() {
super.onStart();
// Bind to TrackingService.
Intent intent = new Intent(this, TrackingService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
Intent i = new Intent(this, TrackingService.class);
startService(i);
}
如何在MapActivity中销毁此应用程序中的应用程序？ 的 MainActivity：
public class MainActivity extends ActionBarActivity implements
AsyncTaskCallback {
boolean serviceStatus = true;
TrackingService mService;
boolean mBound = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.route_available);
// Start the TrackingService class.
Intent i = new Intent(this, TrackingService.class);
startService(i);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
System.out.println("ABC MainActivity onOptionsItemSelected was invoked.");
switch (item.getItemId()) {
case R.id.menu_toggle:
if (serviceStatus) {
item.setIcon(R.drawable.off);
item.setTitle("OFF");
serviceStatus = false;
mService.stopTrackingService();
} else {
item.setIcon(R.drawable.on);
item.setTitle("ON");
serviceStatus = true;
Intent i = new Intent(this, TrackingService.class);
startService(i);
System.out.println("ABC MainActivity onOptionsitemSelected ON");
}
return super.onOptionsItemSelected(item);
}
}
@Override
protected void onStart() {
super.onStart();
// Bind to TrackingService.
Intent intent = new Intent(this, TrackingService.class);
//To start the onPrepareOptionsMenue() after returning from the map activity to change the icon of the toggle button.
invalidateOptionsMenu();
}
@Override
protected void onStop() {
super.onStop();
//13.08.15
// Unbind from the service
if (mBound) {
unbindService(mConnection);
System.out.println("ABC MainActivity onStop() - unbindService(mConnection) was invoked. " + mBound);
mBound = false;
}else{
System.out.println("ABC MainActivity onStop() - unbindService(mConnection) was invoked. " + mBound);
}
}
@Override
protected void onDestroy() {
Intent i = new Intent(this, TrackingService.class);
stopService(i);
mService.stopTrackingService();
}
private ServiceConnection mConnection = new ServiceConnection(){
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
LocalBinder binder = (LocalBinder) service;
mService = binder.getService();
mBound = true;
}
@Override
public void onServiceDisconnected(ComponentName name) {
mBound = false;
}
};
}
MapActivity
public class MapActivity extends ActionBarActivity implements OnMapReadyCallback,
ConnectionCallbacks, OnConnectionFailedListener {
boolean serviceStatus;
TrackingService mService;
boolean mBound = false;
@Override
protected void onStart() {
super.onStart();
serviceStatus = getIntent().getExtras().getBoolean("ServiceStatusExtras");
if (serviceStatus) {
Intent i = new Intent(this, TrackingService.class);
bindService(i, mConnection, Context.BIND_AUTO_CREATE);
startService(i);
System.out.println("ABC MapActivity onStart serviceStatus = " + serviceStatus);
}
}
/** Defines callbacks for service binding, passed to bindService() */
private ServiceConnection mConnection = new ServiceConnection(){
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
// We've bound to LocalService, cast the IBinder and get LocalService instance
LocalBinder binder = (LocalBinder) service;
mService = binder.getService();
mBound = true;
//System.out.println("ABC Map onServiceConnected() - " + mBound);
}
@Override
public void onServiceDisconnected(ComponentName name) {
mBound = false;
//System.out.println("ABC Map onServiceDisconnected() - mBound");
}
};
@Override
protected void onStop() {
super.onStop();
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
markerMap.clear();
stopAlarm();
if(!serviceStatus){
Intent i = new Intent(this, TrackingService.class);
stopService(i);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_toggle:
if (serviceStatus) {
item.setIcon(R.drawable.off);
item.setTitle("OFF");
serviceStatus = false;
if(mService!=null){
mService.stopTrackingService();
}
} else {
item.setIcon(R.drawable.on);
item.setTitle("ON");
serviceStatus = true;
Intent i = new Intent(this, TrackingService.class);
startService(i);
}
}
return super.onOptionsItemSelected(item);
}
}
TrackingService类：
public class TrackingService extends Service implements AsyncTaskCallback,
LocationListener {
LocationManager lm;
private final IBinder mBinder = new LocalBinder();
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
detectLocation();
return START_NOT_STICKY;
}
private void detectLocation() {
lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 12 * 1000, 0,
this);
}
public class LocalBinder extends Binder {
TrackingService getService() {
return TrackingService.this;
}
}
public void stopTrackingService(){
if(lm != null){
lm.removeUpdates(this);
}
}
}
}