当我启动应用程序时，我会检查位置数据是否处于活动状态。否则，请将用户发送到GPS /本地设置屏幕。
问题：
当GPS已被禁用一段时间并启用时，应用程序中会出错。但如果你等几秒钟，它将正常工作。有一种延迟。
我的位置检查有什么问题？
我怎么能改善这个？
我检查的代码：
Code OnCreate:
mFusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE );
getLocationPermission();
if ( !manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
//Avisar que nao tem GPS acionado
//Toast.makeText(this, "Gps is not active....", Toast.LENGTH_SHORT).show();
buildAlertMessageNoGps();
} else {
getDeviceLocation();
}
功能：
private void getDeviceLocation() {
/*
* Get the best and most recent location of the device, which may be null in rare
* cases when a location is not available.
*/
try {
if (mLocationPermissionGranted) {
Task<Location> locationResult = mFusedLocationProviderClient.getLastLocation();
locationResult.addOnCompleteListener(this, new OnCompleteListener<Location>() {
@Override
public void onComplete(@NonNull Task<Location> task) {
if (task.isSuccessful()) {
mLastKnownLocation = task.getResult();
/*FireStore*/
Map<String, Object> geoUser = new HashMap<>();
geoUser.put("Coordenadas", new GeoPoint(mLastKnownLocation.getLatitude(), mLastKnownLocation.getLongitude()));
geoUser.put("Coordenadas_timestamp", FieldValue.serverTimestamp());
Task<Void> coordenadasUser = db.collection("Usuarios").document(mCurrentUser.getUid())
.update(geoUser).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
//OK
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(HomeActivity.this, "Error!", Toast.LENGTH_SHORT).show();
}
});
} else {
Toast.makeText(HomeActivity.this, "Error", Toast.LENGTH_SHORT).show();
}
}
});
}
} catch (SecurityException e) {
Log.e("Exception: %s", e.getMessage());
}
}
private void getLocationPermission() {
/*
* Request location permission, so that we can get the location of the
* device. The result of the permission request is handled by a callback,
* onRequestPermissionsResult.
*/
if (ContextCompat.checkSelfPermission(this.getApplicationContext(),
android.Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
mLocationPermissionGranted = true;
} else {
ActivityCompat.requestPermissions(this,
new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION},
PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);
}
}
/**
* Handles the result of the request for location permissions.
*/
@Override
public void onRequestPermissionsResult(int requestCode,
@NonNull String permissions[],
@NonNull int[] grantResults) {
mLocationPermissionGranted = false;
switch (requestCode) {
case PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
mLocationPermissionGranted = true;
}
}
}
}
谢谢！