Java 位置侦听器未运行my onLocationChanged
onLocationChanged中的My buildLocationEvent(位置)从未运行?为什么会这样呢?我看不出任何原因,也许我遗漏了一些明显的东西,请告诉我这里出了什么问题,以及我如何对其进行排序,以便我可以开始正确地获取位置数据 我复制了以下代码:Java 位置侦听器未运行my onLocationChanged,java,android,android-location,locationlistener,Java,Android,Android Location,Locationlistener,onLocationChanged中的My buildLocationEvent(位置)从未运行?为什么会这样呢?我看不出任何原因,也许我遗漏了一些明显的东西,请告诉我这里出了什么问题,以及我如何对其进行排序,以便我可以开始正确地获取位置数据 我复制了以下代码: public class LService extends Service { public static final String TAG = "Lervice"; private LocationListener
public class LService extends Service {
public static final String TAG = "Lervice";
private LocationListener listener;
private LocationManager manager;
private static LocationEvent locationEvent = new LocationEvent();
@RequiresApi(api = Build.VERSION_CODES.O)
@SuppressLint("MissingPermission")
@Override
public void onCreate() {
super.onCreate();
startMyOwnForeground();
listener = new LocationListener() {
@RequiresApi(api = Build.VERSION_CODES.O)
@Override
public void onLocationChanged(Location location) {
buildLocationEvent(location);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(i);
}
};
manager = (LocationManager)getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 100, 0, listener);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
return START_STICKY;
}
@RequiresApi(api = Build.VERSION_CODES.O)
private void startMyOwnForeground() {
String NOTIFICATION_CHANNEL_ID = "com.app.myapp";
String channelName = "LService";
NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
chan.setLightColor(Color.GREEN);
chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
assert manager != null;
manager.createNotificationChannel(chan);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
Notification notification = notificationBuilder.setOngoing(true)
.setContentTitle("App is running in background")
.setPriority(NotificationManager.IMPORTANCE_MIN)
.setCategory(Notification.CATEGORY_SERVICE)
.build();
startForeground(3, notification);
}
@Override
public void onDestroy() {
super.onDestroy();
if(manager != null){
manager.removeUpdates(listener);
}
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@RequiresApi(api = Build.VERSION_CODES.O)
public void buildLocationEvent(Location location){
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
double[] coordinate = {latLng.latitude, latLng.longitude};
locationEvent.setCoordinate(coordinate);
locationEvent.setAltitude(location.getAltitude());
locationEvent.setHorizontalAccuracy(location.getAccuracy());
locationEvent.setVerticalAccuracy(location.getVerticalAccuracyMeters());
locationEvent.setTimestamp(location.getTime());
sendLocationToManager(locationEvent);
}
private void sendLocationToManager(LocationEvent locationEvent){
Intent intent = new Intent("locationCreated");
sendLocalBroadcastEvent(intent, locationEvent);
}
private void sendLocalBroadcastEvent(Intent intent, LocationEvent locationEvent){
intent.putExtra("locationevent", locationEvent);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
}
谢谢你在这方面的帮助。如果你需要澄清什么,请告诉我
当我运行以下命令时,将在Main中调用权限:
String[] appPermissions = {
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_BACKGROUND_LOCATION
};
private static final int PERMISSIONS_REQUEST_CODE = 1240;
//get permissions for location
Log.d(TAG, "permissions: "+ checkAndRequestPermissions()); //false
if(true) {
//I RUN MY CODE HERE
}
}
private boolean checkAndRequestPermissions() {
List<String> listPermissionsNeeded = new ArrayList<>();
for (String perm : appPermissions) {
if (ContextCompat.checkSelfPermission(this, perm) != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(perm);
}
}
if (!listPermissionsNeeded.isEmpty()) {
ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]),
PERMISSIONS_REQUEST_CODE
);
return false;
}
//All Permissions granted
return true;
}
可能是权限问题-哪个API版本-后台服务在API 29 ACCESS\u background中有新的权限类型_LOCATION@Andy谢谢,当我第一次运行应用程序时,它确实会请求我一直授予的位置权限。然后再次运行它不会再次询问,并在通知允许后台运行。我刚刚测试过,位置会在模拟器上返回,但不会在我的手机上!所以你可能是对的,我有什么办法可以解决这个问题吗?主要是在问题中添加了权限请求。我正在调用传感器数据和位置数据。如果没有在单独的线程上调用它们,这会是一个问题吗?您不是第一次或每次都获取位置数据吗?可能是权限问题-哪个API版本-后台服务中有新的权限类型API 29,访问背景_LOCATION@Andy谢谢,当我第一次运行应用程序时,它确实会请求我一直授予的位置权限。然后再次运行它不会再次询问,并在通知允许后台运行。我刚刚测试过,位置会在模拟器上返回,但不会在我的手机上!所以你可能是对的,我有什么方法可以解决这个问题吗?主要是在问题中添加了权限请求。我正在调用传感器数据和位置数据。如果它们不是在单独的线程上调用,这会是一个问题吗?你不是只第一次还是每次都获取位置数据?
public void startUpdatingLocation(){
//Start sensor service
Intent locationIntent = new Intent(MyApplication.getAppContext(), LService.class);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
MyApplication.getAppContext().startForegroundService(locationIntent);
} else {
MyApplication.getAppContext().startService(locationIntent);
}
}