当屏幕被锁定打开和关闭时，服务停止向数据库Mysql发送数据。如何解决？2天我找不到答案， 获得了wakelock的许可 向我解释为什么会这样 那是我的代码：
public class GpsService extends Service implements GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener, LocationListener {
int NOTIFICATION_ID = 123123;
private static final String LOGSERVICE = "#######";
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
String urlAddress="*****";
String adress ="https://www.google.az/";
String number = "Example2";
String id="2";
String status;
String mlatitude, mlogtud;
String times;
TimerTask task;
Timer timer;
Date now;
public GpsService() {
}
@Override
public void onCreate() {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"MyWakelockTag");
super.onCreate();
wakeLock.acquire();
Notification.Builder builder = new Notification.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher);
Notification notification;
buildGoogleApiClient();
notification = builder.build();
startForeground(NOTIFICATION_ID, notification);
Log.d(LOGSERVICE,"servis leavle");
task=new TimerTask() {
@Override
public void run() {
//SimpleDateFormat example - Date with timezone information
Date today = new Date();
SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("HH:mm");
String date = DATE_FORMAT.format(today);
status=date.toString();
Log.d(LOGSERVICE,"my new time + = "+status);
// Log.d(LOGSERVICE,times );
Sender s=new Sender(getApplicationContext(),number,urlAddress,mlatitude,mlogtud,id,status);
s.execute();
}
};
timer=new Timer();
timer.scheduleAtFixedRate(task,5*1000,8*1000);
wakeLock.release();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(LOGSERVICE, "onStartCommand");
if (!mGoogleApiClient.isConnected())
mGoogleApiClient.connect();
return START_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(LOGSERVICE,"servis destroy");
timer.cancel();
}
@Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
@Override
public void onConnected(Bundle bundle) {
Log.i(LOGSERVICE, "onConnected" + bundle);
Location l = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (l != null) {
Log.i(LOGSERVICE, "lat " + l.getLatitude());
Log.i(LOGSERVICE, "lng " + l.getLongitude());
}
startLocationUpdate();
}
@Override
public void onConnectionSuspended(int i) {
Log.i(LOGSERVICE, "onConnectionSuspended " + i);
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
mlatitude = String.valueOf(location.getLatitude());
mlogtud = String.valueOf(location.getLongitude());
/* new Timer().schedule(new TimerTask() {
@Override
public void run() {
Sender s=new Sender(getApplicationContext(),number,urlAddress,mlatitude,mlogtud,id,status);
s.execute();
Log.i(LOGSERVICE,"Location onnnn " );
}
},10*1000, 5*1000);*/
LatLng mLocation = (new LatLng(location.getLatitude(), location.getLongitude()));
}
private void initLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10000);
mLocationRequest.setFastestInterval(12000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
}
private void startLocationUpdate() {
initLocationRequest();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
private void stopLocationUpdate() {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addOnConnectionFailedListener(this)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.build();
}
}
我的主要
public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener {
protected static final int REQUEST_CHECK_SETTINGS = 0x1;
static final int MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION = 1;
private FusedLocationProviderApi locationProvider = LocationServices.FusedLocationApi;
private GoogleApiClient googleApiClient;
private LocationRequest locationRequest;
private static final String LOGSERVICE = "#######";
Button btnStart, btnStop;
TextView textTime;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnStart=(Button)findViewById(R.id.buttonStart) ;
btnStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startService(new Intent(MainActivity.this,GpsService.class));
Log.d(LOGSERVICE,"Starting Service");
}
});
btnStop=(Button)findViewById(R.id.buttonStop) ;
btnStop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stopService(new Intent(MainActivity.this,GpsService.class));
Log.d(LOGSERVICE,"Stop Service");
}
});
googleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
locationRequest = new LocationRequest();
locationRequest.setInterval(1000);
locationRequest.setFastestInterval(1000);
locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
}
@Override
public void onConnected(Bundle bundle) {
requestLocationUpdates();
}
private void requestLocationUpdates() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
}
@Override
public void onRequestPermissionsResult(
int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(MainActivity.this,
"permission was granted, :)",
Toast.LENGTH_LONG).show();
requestLocationUpdates();
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
} else {
Toast.makeText(MainActivity.this,
"permission denied, ...:(",
Toast.LENGTH_LONG).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
/* Log.d(LOGSERVICE,"latitud" + location.getLatitude());
Log.d(LOGSERVICE,"lotitude" + location.getLongitude());
myLatitude = location.getLatitude();
myLongitude = location.getLongitude();
lat.setText(String.valueOf(myLatitude));
lot.setText(String.valueOf(myLongitude));*/
}
public void settingsrequest()
{
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(1 * 1000);
locationRequest.setFastestInterval(1 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true); //this is the key ingredient
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location
// requests here.
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user
// a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(MainActivity.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
break;
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
// Check for the integer request code originally supplied to startResolutionForResult().
case REQUEST_CHECK_SETTINGS:
switch (resultCode) {
case Activity.RESULT_OK:
requestLocationUpdates();
Toast.makeText(getApplicationContext(),"Gps turn on",Toast.LENGTH_LONG).show();
break;
case Activity.RESULT_CANCELED:
settingsrequest();//keep asking if imp or do whatever
break;
}
break;
}
}
@Override
protected void onStart() {
super.onStart();
googleApiClient.connect();
settingsrequest();
Log.d(LOGSERVICE,"onSTart" );
}
@Override
protected void onResume() {
super.onResume();
if (googleApiClient.isConnected()) {
requestLocationUpdates();
}
Log.d(LOGSERVICE,"onResume" );
}
@Override
protected void onPause() {
super.onPause();
// LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
Log.d(LOGSERVICE,"onPause" );
}
@Override
protected void onStop() {
super.onStop();
// googleApiClient.disconnect();
Log.d(LOGSERVICE,"onStop" );
}
@Override
protected void onDestroy() {
super.onDestroy();
Log.d(LOGSERVICE,"onDestroy" );
}
}
答案 0 :(得分：1)
你没有正确使用Wakelock。
public void onCreate() {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"MyWakelockTag");
super.onCreate();
wakeLock.acquire();
...
task=new TimerTask() {
@Override
public void run() {
....
}
};
timer=new Timer();
timer.scheduleAtFixedRate(task,5*1000,8*1000);
wakeLock.release();
}
您正在onCreate方法的末尾释放锁定，因此Task根本没有任何锁定。您应该在仅停止计划任务时释放它。
注意在注释中存在Doze，在一些不活动后忽略WakeLock。