On Android `geolocationError` return PositionError object.

Summary:
Follow iOS implementation:
https://github.com/facebook/react-native/blob/master/Libraries/Geolocation/RCTLocationObserver.m#L325

and FIX #9710
Closes https://github.com/facebook/react-native/pull/9734

Differential Revision: D3819868

Pulled By: mkonicek

fbshipit-source-id: 3deb7d3d253d402bfcb88c6a94ca705128998748

Examples/UIExplorer/js/GeolocationExample.js

@@ -59,7 +59,7 @@ class GeolocationExample extends React.Component {
         var initialPosition = JSON.stringify(position);
         this.setState({initialPosition});
       },
-      (error) => alert(error),
+      (error) => alert(JSON.stringify(error)),
       {enableHighAccuracy: true, timeout: 20000, maximumAge: 1000}
     );
     this.watchID = navigator.geolocation.watchPosition((position) => {

ReactAndroid/src/main/java/com/facebook/react/modules/location/LocationModule.java

@@ -9,8 +9,6 @@
 
 package com.facebook.react.modules.location;
 
-import javax.annotation.Nullable;
-
 import android.content.Context;
 import android.location.Location;
 import android.location.LocationListener;
@@ -19,10 +17,9 @@ import android.location.LocationProvider;
 import android.os.Bundle;
 import android.os.Handler;
 
-import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
 import com.facebook.react.bridge.ReadableMap;
@@ -31,6 +28,8 @@ import com.facebook.react.common.SystemClock;
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.modules.core.DeviceEventManagerModule.RCTDeviceEventEmitter;
 
+import javax.annotation.Nullable;
+
 /**
  * Native module that exposes Geolocation to JS.
  */
@@ -50,9 +49,9 @@ public class LocationModule extends ReactContextBaseJavaModule {
     @Override
     public void onStatusChanged(String provider, int status, Bundle extras) {
       if (status == LocationProvider.OUT_OF_SERVICE) {
-        emitError("Provider " + provider + " is out of service.");
+        emitError(PositionError.POSITION_UNAVAILABLE, "Provider " + provider + " is out of service.");
       } else if (status == LocationProvider.TEMPORARILY_UNAVAILABLE) {
-        emitError("Provider " + provider + " is temporarily unavailable.");
+        emitError(PositionError.TIMEOUT, "Provider " + provider + " is temporarily unavailable.");
       }
     }
 
@@ -158,7 +157,7 @@ public class LocationModule extends ReactContextBaseJavaModule {
           (LocationManager) getReactApplicationContext().getSystemService(Context.LOCATION_SERVICE);
       String provider = getValidProvider(locationManager, locationOptions.highAccuracy);
       if (provider == null) {
-        emitError("No location provider available.");
+        emitError(PositionError.PERMISSION_DENIED, "No location provider available.");
         return;
       }
       if (!provider.equals(mWatchedProvider)) {
@@ -218,9 +217,9 @@ public class LocationModule extends ReactContextBaseJavaModule {
     return map;
   }
 
-  private void emitError(String error) {
+  private void emitError(int code, String message) {
     getReactApplicationContext().getJSModule(RCTDeviceEventEmitter.class)
-        .emit("geolocationError", error);
+        .emit("geolocationError", PositionError.buildError(code, message));
   }
 
   /**
@@ -246,7 +245,7 @@ public class LocationModule extends ReactContextBaseJavaModule {
       public void run() {
         synchronized (SingleUpdateRequest.this) {
           if (!mTriggered) {
-            mError.invoke("Location request timed out");
+            mError.invoke(PositionError.buildError(PositionError.TIMEOUT, "Location request timed out"));
             mLocationManager.removeUpdates(mLocationListener);
             mTriggered = true;
           }

ReactAndroid/src/main/java/com/facebook/react/modules/location/PositionError.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+package com.facebook.react.modules.location;
+
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.WritableMap;
+
+/**
+ * @see {https://developer.mozilla.org/en-US/docs/Web/API/PositionError}
+ */
+public class PositionError {
+  /**
+   * The acquisition of the geolocation information failed because
+   * the page didn't have the permission to do it.
+   */
+  public static int PERMISSION_DENIED = 1;
+
+  /**
+   * The acquisition of the geolocation failed because at least one
+   * internal source of position returned an internal error.
+   */
+  public static int POSITION_UNAVAILABLE = 2;
+
+  /**
+   * The time allowed to acquire the geolocation, defined by
+   * PositionOptions.timeout information was reached before the information was obtained.
+   */
+  public static int TIMEOUT = 3;
+
+  public static WritableMap buildError(int code, String message) {
+    WritableMap error = Arguments.createMap();
+    error.putInt("code", code);
+    if (message != null) {
+      error.putString("message", message);
+    }
+    return error;
+  }
+}