Add fallback to native location provider

AndroidManifest.xml

@@ -2,5 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.google.android.gms">
 
-    <uses-sdk android:minSdkVersion="5" />
+    <uses-sdk android:minSdkVersion="9" />
+    <application>
+        <receiver android:name="org.microg.gms.location.NativeLocationClientImpl$NativePendingIntentForwarder" />
+    </application>
 </manifest>

src/org/microg/gms/common/GmsClient.java

@@ -10,7 +10,6 @@ import android.os.RemoteException;
 import android.util.Log;
 
 import com.google.android.gms.common.ConnectionResult;
-import com.google.android.gms.common.GooglePlayServicesUtil;
 import com.google.android.gms.common.api.GoogleApiClient;
 import com.google.android.gms.common.internal.IGmsCallbacks;
 import com.google.android.gms.common.internal.IGmsServiceBroker;
@@ -21,9 +20,9 @@ public abstract class GmsClient<I extends IInterface> implements ApiConnection {
     private static final String TAG = "GmsClient";
 
     private final Context context;
-    private final GoogleApiClient.ConnectionCallbacks callbacks;
-    private final GoogleApiClient.OnConnectionFailedListener connectionFailedListener;
-    private ConnectionState state = ConnectionState.NOT_CONNECTED;
+    protected final GoogleApiClient.ConnectionCallbacks callbacks;
+    protected final GoogleApiClient.OnConnectionFailedListener connectionFailedListener;
+    protected ConnectionState state = ConnectionState.NOT_CONNECTED;
     private ServiceConnection serviceConnection;
     private I serviceInterface;
 
@@ -46,20 +45,23 @@ public abstract class GmsClient<I extends IInterface> implements ApiConnection {
         Log.d(TAG, "connect()");
         if (state == ConnectionState.CONNECTED || state == ConnectionState.CONNECTING) return;
         state = ConnectionState.CONNECTING;
-        if (GooglePlayServicesUtil.isGooglePlayServicesAvailable(context) !=
-                ConnectionResult.SUCCESS) {
-            state = ConnectionState.NOT_CONNECTED;
-        } else {
         if (serviceConnection != null) {
             MultiConnectionKeeper.getInstance(context)
                     .unbind(getActionString(), serviceConnection);
         }
         serviceConnection = new GmsServiceConnection();
-            MultiConnectionKeeper.getInstance(context).bind(getActionString(),
-                    serviceConnection);
+        if (!MultiConnectionKeeper.getInstance(context).bind(getActionString(),
+                serviceConnection)) {
+            state = ConnectionState.ERROR;
+            handleConnectionFailed();
         }
     }
 
+    public void handleConnectionFailed() {
+        connectionFailedListener.onConnectionFailed(new ConnectionResult(ConnectionResult
+                .API_UNAVAILABLE, null));
+    }
+
     @Override
     public void disconnect() {
         Log.d(TAG, "disconnect()");
@@ -78,7 +80,7 @@ public abstract class GmsClient<I extends IInterface> implements ApiConnection {
 
     @Override
     public boolean isConnected() {
-        return state == ConnectionState.CONNECTED;
+        return state == ConnectionState.CONNECTED || state == ConnectionState.PSEUDO_CONNECTED;
     }
 
     @Override
@@ -86,6 +88,10 @@ public abstract class GmsClient<I extends IInterface> implements ApiConnection {
         return state == ConnectionState.CONNECTING;
     }
 
+    public boolean hasError() {
+        return state == ConnectionState.ERROR;
+    }
+
     public Context getContext() {
         return context;
     }
@@ -94,8 +100,8 @@ public abstract class GmsClient<I extends IInterface> implements ApiConnection {
         return serviceInterface;
     }
 
-    private enum ConnectionState {
-        NOT_CONNECTED, CONNECTING, CONNECTED, DISCONNECTING, ERROR
+    protected enum ConnectionState {
+        NOT_CONNECTED, CONNECTING, CONNECTED, DISCONNECTING, ERROR, PSEUDO_CONNECTED
     }
 
     private class GmsServiceConnection implements ServiceConnection {

src/org/microg/gms/location/LocationClientImpl.java

@@ -3,6 +3,7 @@ package org.microg.gms.location;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.location.Location;
+import android.os.Bundle;
 import android.os.Looper;
 import android.os.RemoteException;
 import android.util.Log;
@@ -20,6 +21,9 @@ import java.util.Map;
 
 public class LocationClientImpl extends GoogleLocationManagerClient {
     private static final String TAG = "GmsLocationClientImpl";
+    private NativeLocationClientImpl nativeLocation = null;
+    private Map<LocationListener, ILocationListener> listenerMap = new HashMap<>();
+
 
     public LocationClientImpl(Context context, GoogleApiClient.ConnectionCallbacks callbacks,
             GoogleApiClient.OnConnectionFailedListener connectionFailedListener) {
@@ -35,50 +39,89 @@ public class LocationClientImpl extends GoogleLocationManagerClient {
         return null;
     }
 
-    private Map<LocationListener, ILocationListener> listenerMap = new HashMap<>();
-
     public Location getLastLocation() throws RemoteException {
         Log.d(TAG, "getLastLocation()");
+        if (nativeLocation != null) {
+            return nativeLocation.getLastLocation();
+        } else {
             return getServiceInterface().getLastLocation();
         }
+    }
 
     public void requestLocationUpdates(LocationRequest request, final LocationListener listener)
             throws RemoteException {
-        ILocationListener iLocationListener = new ILocationListener.Stub() {
+        if (nativeLocation != null) {
+            nativeLocation.requestLocationUpdates(request, listener);
+        } else {
+            if (!listenerMap.containsKey(listener)) {
+                listenerMap.put(listener, new ILocationListener.Stub() {
                     @Override
                     public void onLocationChanged(Location location) throws RemoteException {
                         listener.onLocationChanged(location);
                     }
-        };
-        listenerMap.put(listener, iLocationListener);
+                });
+            }
             getServiceInterface().requestLocationUpdatesWithPackage(request,
-                iLocationListener, getContext().getPackageName());
+                    listenerMap.get(listener), getContext().getPackageName());
+        }
     }
 
     public void requestLocationUpdates(LocationRequest request, PendingIntent pendingIntent)
             throws RemoteException {
+        if (nativeLocation != null) {
+            nativeLocation.requestLocationUpdates(request, pendingIntent);
+        } else {
             getServiceInterface().requestLocationUpdatesWithIntent(request, pendingIntent);
         }
+    }
 
     public void requestLocationUpdates(LocationRequest request, LocationListener listener,
             Looper looper) throws RemoteException {
+        if (nativeLocation != null) {
+            nativeLocation.requestLocationUpdates(request, listener, looper);
+        }
         requestLocationUpdates(request, listener); // TODO
     }
 
     public void removeLocationUpdates(LocationListener listener) throws RemoteException {
+        if (nativeLocation != null) {
+            nativeLocation.removeLocationUpdates(listener);
+        } else {
             getServiceInterface().removeLocationUpdatesWithListener(listenerMap.get(listener));
-        listenerMap.remove(listener);
+        }
     }
 
     public void removeLocationUpdates(PendingIntent pendingIntent) throws RemoteException {
+        if (nativeLocation != null) {
+            nativeLocation.removeLocationUpdates(pendingIntent);
+        } else {
             getServiceInterface().removeLocationUpdatesWithIntent(pendingIntent);
         }
+    }
 
     public void setMockMode(boolean isMockMode) throws RemoteException {
+        if (nativeLocation != null) {
+            nativeLocation.setMockMode(isMockMode);
+        } else {
             getServiceInterface().setMockMode(isMockMode);
         }
+    }
 
     public void setMockLocation(Location mockLocation) throws RemoteException {
+        if (nativeLocation != null) {
+            nativeLocation.setMockLocation(mockLocation);
+        } else {
             getServiceInterface().setMockLocation(mockLocation);
         }
     }
+
+    @Override
+    public void handleConnectionFailed() {
+        // DO NOT call super here, because fails are not really problems :)
+        nativeLocation = new NativeLocationClientImpl(this);
+        state = ConnectionState.PSEUDO_CONNECTED;
+        Bundle bundle = new Bundle();
+        bundle.putBoolean("fallback_to_native_active", true);
+        callbacks.onConnected(bundle);
+    }
+}

src/org/microg/gms/location/NativeLocationClientImpl.java

@@ -0,0 +1,208 @@
+/*
+ * Copyright 2014-2015 µg Project Team
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.microg.gms.location;
+
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.location.Criteria;
+import android.location.Location;
+import android.location.LocationManager;
+import android.os.Bundle;
+import android.os.Looper;
+import android.util.Log;
+
+import com.google.android.gms.location.LocationListener;
+import com.google.android.gms.location.LocationRequest;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class NativeLocationClientImpl {
+    private final static String TAG = "GmsToNativeLocationClient";
+    private final static Criteria DEFAULT_CRITERIA = new Criteria();
+    private final static Map<PendingIntent, Integer> pendingCount = new HashMap<>();
+    private final static Map<PendingIntent, PendingIntent> nativePendingMap = new HashMap<>();
+    private static final String EXTRA_PENDING_INTENT = "pending_intent";
+
+    private final Context context;
+    private final LocationManager locationManager;
+    private final Map<LocationListener, NativeListener> nativeListenerMap = new HashMap<>();
+
+    public NativeLocationClientImpl(LocationClientImpl client) {
+        context = client.getContext();
+        locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
+    }
+
+    private static Criteria makeNativeCriteria(LocationRequest request) {
+        Criteria criteria = new Criteria();
+        switch (request.getPriority()) {
+            case LocationRequest.PRIORITY_HIGH_ACCURACY:
+                criteria.setAccuracy(Criteria.ACCURACY_FINE);
+                criteria.setPowerRequirement(Criteria.POWER_HIGH);
+                break;
+            case LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY:
+            default:
+                criteria.setAccuracy(Criteria.ACCURACY_COARSE);
+                criteria.setPowerRequirement(Criteria.POWER_MEDIUM);
+                break;
+            case LocationRequest.PRIORITY_NO_POWER:
+            case LocationRequest.PRIORITY_LOW_POWER:
+                criteria.setAccuracy(Criteria.ACCURACY_COARSE);
+                criteria.setPowerRequirement(Criteria.POWER_LOW);
+        }
+        return criteria;
+    }
+
+    public Location getLastLocation() {
+        Log.d(TAG,"getLastLocation()");
+        return locationManager.getLastKnownLocation(
+                locationManager.getBestProvider(DEFAULT_CRITERIA, true));
+    }
+
+    public void requestLocationUpdates(LocationRequest request, LocationListener listener) {
+        requestLocationUpdates(request, listener, Looper.getMainLooper());
+    }
+
+    public void requestLocationUpdates(LocationRequest request, PendingIntent pendingIntent) {
+        Log.d(TAG,"requestLocationUpdates()");
+        Intent i = new Intent(context, NativePendingIntentForwarder.class);
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(EXTRA_PENDING_INTENT, pendingIntent);
+        i.putExtras(bundle);
+        pendingCount.put(pendingIntent, request.getNumUpdates());
+        nativePendingMap.put(pendingIntent, PendingIntent.getActivity(context, 0, i, 0));
+        locationManager.requestLocationUpdates(request.getInterval(),
+                request.getSmallestDesplacement(), makeNativeCriteria(request),
+                nativePendingMap.get(pendingIntent));
+    }
+
+    public void requestLocationUpdates(LocationRequest request, LocationListener listener, Looper
+            looper) {
+        Log.d(TAG,"requestLocationUpdates()");
+        if (nativeListenerMap.containsKey(listener)) {
+            removeLocationUpdates(listener);
+        }
+        nativeListenerMap.put(listener, new NativeListener(listener, request.getNumUpdates()));
+        locationManager.requestLocationUpdates(request.getInterval(),
+                request.getSmallestDesplacement(), makeNativeCriteria(request),
+                nativeListenerMap.get(listener), looper);
+    }
+
+    public void removeLocationUpdates(LocationListener listener) {
+        Log.d(TAG,"removeLocationUpdates()");
+        locationManager.removeUpdates(nativeListenerMap.get(listener));
+        nativeListenerMap.remove(listener);
+    }
+
+    public void removeLocationUpdates(PendingIntent pendingIntent) {
+        Log.d(TAG,"removeLocationUpdates()");
+        locationManager.removeUpdates(nativePendingMap.get(pendingIntent));
+        nativePendingMap.remove(pendingIntent);
+        pendingCount.remove(pendingIntent);
+    }
+
+    public void setMockMode(boolean isMockMode) {
+        Log.d(TAG,"setMockMode()");
+        // not yet supported
+    }
+
+    public void setMockLocation(Location mockLocation) {
+        Log.d(TAG,"setMockLocation()");
+        // not yet supported
+    }
+
+    public static class NativePendingIntentForwarder extends BroadcastReceiver {
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (intent.hasExtra(LocationManager.KEY_LOCATION_CHANGED)) {
+                PendingIntent pendingIntent = intent.getExtras().getParcelable
+                        (EXTRA_PENDING_INTENT);
+                try {
+                    pendingIntent.send(context, 0, intent);
+                    pendingCount.put(pendingIntent, pendingCount.get(pendingIntent) - 1);
+                    if (pendingCount.get(pendingIntent) == 0) {
+                        ((LocationManager) context.getSystemService(Context.LOCATION_SERVICE))
+                                .removeUpdates(nativePendingMap.get(pendingIntent));
+                        nativePendingMap.remove(pendingIntent);
+                        pendingCount.remove(pendingIntent);
+                    }
+                } catch (PendingIntent.CanceledException e) {
+                    ((LocationManager) context.getSystemService(Context.LOCATION_SERVICE))
+                            .removeUpdates(nativePendingMap.get(pendingIntent));
+                    nativePendingMap.remove(pendingIntent);
+                    pendingCount.remove(pendingIntent);
+                }
+            }
+        }
+    }
+
+    public class NativeListener implements android.location.LocationListener {
+
+        private final LocationListener listener;
+        private int count;
+
+        private NativeListener(LocationListener listener, int count) {
+            this.listener = listener;
+            this.count = count;
+        }
+
+        @Override
+        public void onLocationChanged(Location location) {
+            listener.onLocationChanged(location);
+            count--;
+            if (count == 0) {
+                locationManager.removeUpdates(this);
+                nativeListenerMap.remove(listener);
+            }
+        }
+
+        @Override
+        public void onStatusChanged(String provider, int status, Bundle extras) {
+
+        }
+
+        @Override
+        public void onProviderEnabled(String provider) {
+
+        }
+
+        @Override
+        public void onProviderDisabled(String provider) {
+
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+
+            NativeListener that = (NativeListener) o;
+
+            if (!listener.equals(that.listener)) return false;
+
+            return true;
+        }
+
+        @Override
+        public int hashCode() {
+            return listener.hashCode();
+        }
+    }
+}