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fix: added pending callbacks mechanism to solve npe crash #332

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fix: added pending callbacks mechanism to solve npe crash #332

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34 changes: 23 additions & 11 deletions android/src/main/java/com/reactnativecommunity/geolocation/PlayServicesLocationManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -26,17 +26,21 @@
import com.google.android.gms.location.Priority;
import com.google.android.gms.location.SettingsClient;

import java.util.ArrayList;
import java.util.List;

@SuppressLint("MissingPermission")
public class PlayServicesLocationManager extends BaseLocationManager {
private FusedLocationProviderClient mFusedLocationClient;
private LocationCallback mLocationCallback;
private LocationCallback mSingleLocationCallback;
private List<LocationCallback> mPendingLocationCallbacks;
private SettingsClient mLocationServicesSettingsClient;
private LocationCallback mLocationCallback;

protected PlayServicesLocationManager(ReactApplicationContext reactContext) {
super(reactContext);
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(reactContext);
mLocationServicesSettingsClient = LocationServices.getSettingsClient(reactContext);
mPendingLocationCallbacks = new ArrayList<>();
}

@Override
Expand All @@ -46,9 +50,10 @@ public void getCurrentLocationData(ReadableMap options, Callback success, Callba
Activity currentActivity = mReactContext.getCurrentActivity();

if (currentActivity == null) {
mSingleLocationCallback = createSingleLocationCallback(success, error);
checkLocationSettings(options, mSingleLocationCallback, error);
return;
LocationCallback singleLocationCallback = createSingleLocationCallback(success, error);
mPendingLocationCallbacks.add(singleLocationCallback);
checkLocationSettings(options, singleLocationCallback, error);
return;
}

try {
Expand All @@ -57,8 +62,9 @@ public void getCurrentLocationData(ReadableMap options, Callback success, Callba
if (location != null && (SystemClock.currentTimeMillis() - location.getTime()) < locationOptions.maximumAge) {
success.invoke(locationToMap(location));
} else {
mSingleLocationCallback = createSingleLocationCallback(success, error);
checkLocationSettings(options, mSingleLocationCallback, error);
LocationCallback singleLocationCallback = createSingleLocationCallback(success, error);
mPendingLocationCallbacks.add(singleLocationCallback);
checkLocationSettings(options, singleLocationCallback, error);
}
});
} catch (SecurityException e) {
Expand Down Expand Up @@ -93,10 +99,16 @@ public void onLocationAvailability(LocationAvailability locationAvailability) {

@Override
public void stopObserving() {
if(mLocationCallback == null) {
if(mLocationCallback == null && mPendingLocationCallbacks.isEmpty()) {
return;
}
mFusedLocationClient.removeLocationUpdates(mLocationCallback);
if (mLocationCallback != null) {
mFusedLocationClient.removeLocationUpdates(mLocationCallback);
}
for (LocationCallback callback : mPendingLocationCallbacks) {
mFusedLocationClient.removeLocationUpdates(callback);
}
mPendingLocationCallbacks.clear();
}

private void checkLocationSettings(ReadableMap options, LocationCallback locationCallback, Callback error) {
Expand Down Expand Up @@ -167,8 +179,8 @@ public void onLocationResult(@NonNull LocationResult locationResult) {

callbackHolder.success(location);

mFusedLocationClient.removeLocationUpdates(mSingleLocationCallback);
mSingleLocationCallback = null;
mFusedLocationClient.removeLocationUpdates(this);
mPendingLocationCallbacks.remove(this);
}

@Override
Expand Down