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Add a hidden API to inject location.

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New API allows system clients with LOCATION_HARDWARE and
ACCESS_FINE_LOCATION to inject a location to the Location Manager.  This
is useful in products like Auto, where the location needs to be cached
across reboots.

Bug: b/64125396
Test: Foll. were tested:
1. location can be injected when lastLocation is not available
2. location cannot be injected when lastLocation is already available
Also, tested location availability on different devices for sanity.
Change-Id: I1fd060caafed0431074ae64439ac52e99e0d6032
This commit is contained in:
Ram Periathiruvadi
2017-12-08 18:35:10 -08:00
parent d93d206cfe
commit 8671feab63
3 changed files with 117 additions and 17 deletions
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29
location/java/android/location/LocationManager.java
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@@ -42,6 +42,7 @@ import java.util.List;
import static android.Manifest.permission.ACCESS_COARSE_LOCATION;
import static android.Manifest.permission.ACCESS_FINE_LOCATION;
import static android.Manifest.permission.LOCATION_HARDWARE;
/**
* This class provides access to the system location services. These
@@ -882,6 +883,34 @@ public class LocationManager {
requestLocationUpdates(request, null, null, intent);
}
/**
* Set the last known location with a new location.
*
* <p>A privileged client can inject a {@link Location} if it has a better estimate of what
* the recent location is. This is especially useful when the device boots up and the GPS
* chipset is in the process of getting the first fix. If the client has cached the location,
* it can inject the {@link Location}, so if an app requests for a {@link Location} from {@link
* #getLastKnownLocation(String)}, the location information is still useful before getting
* the first fix.</p>
*
* <p> Useful in products like Auto.
*
* @param newLocation newly available {@link Location} object
* @return true if update was successful, false if not
*
* @throws SecurityException if no suitable permission is present
*
* @hide
*/
@RequiresPermission(allOf = {LOCATION_HARDWARE, ACCESS_FINE_LOCATION})
public boolean injectLocation(Location newLocation) {
try {
return mService.injectLocation(newLocation);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
private ListenerTransport wrapListener(LocationListener listener, Looper looper) {
if (listener == null) return null;
synchronized (mListeners) {