Move location provider lib to frameworks/ex - 1

#

# Copyright (C) 2010 The Android Open Source Project

#

# 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.

#

LOCAL_PATH := $(call my-dir)

# the library

# ============================================================

include $(CLEAR_VARS)

LOCAL_MODULE:= com.android.location.provider

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := \

            $(call all-subdir-java-files) \

            $(call all-aidl-files-under, java)

include $(BUILD_JAVA_LIBRARY)

# ====  com.google.location.xml lib def  ========================

include $(CLEAR_VARS)

LOCAL_MODULE := com.android.location.provider.xml

LOCAL_MODULE_TAGS := optional

LOCAL_MODULE_CLASS := ETC

# This will install the file in /system/etc/permissions

#

LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/permissions

LOCAL_SRC_FILES := $(LOCAL_MODULE)

include $(BUILD_PREBUILT)

This library (com.android.location.provider.jar) is a shared java library

containing classes required by unbundled location providers.

--- Rules of this library ---

o This library is effectively a PUBLIC API for unbundled location providers

  that may be distributed outside the system image. So it MUST BE API STABLE.

  You can add but not remove. The rules are the same as for the

  public platform SDK API.

o This library can see and instantiate internal platform classes (such as

  ProviderRequest.java), but it must not expose them in any public method

  (or by extending them via inheritance). This would break clients of the

  library because they cannot see the internal platform classes.

This library is distributed in the system image, and loaded as

a shared library. So you can change the implementation, but not

the interface. In this way it is like framework.jar.

--- Why does this library exists? ---

Unbundled location providers (such as the NetworkLocationProvider)

can not use internal platform classes.

So ideally all of these classes would be part of the public platform SDK API,

but that doesn't seem like a great idea when only applications with a special

signature can implement this API.

The compromise is this library.

It wraps internal platform classes (like ProviderRequest) with a stable

API that does not leak the internal classes.

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2008 The Android Open Source Project

     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.

-->

<permissions>

    <library name="com.android.location.provider"

            file="/system/framework/com.android.location.provider.jar" />

</permissions>

/*

 * Copyright (C) 2010 The Android Open Source Project

 *

 * 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 com.android.location.provider;

import android.os.IBinder;

import android.location.Address;

import android.location.GeocoderParams;

import android.location.IGeocodeProvider;

import java.util.List;

/**

 * Base class for geocode providers implemented as unbundled services.

 *

 * <p>Geocode providers can be implemented as services and return the result of

 * {@link GeocodeProvider#getBinder()} in its getBinder() method.

 *

 * <p>IMPORTANT: This class is effectively a public API for unbundled

 * applications, and must remain API stable. See README.txt in the root

 * of this package for more information.

 */

public abstract class GeocodeProvider {

    private IGeocodeProvider.Stub mProvider = new IGeocodeProvider.Stub() {

        public String getFromLocation(double latitude, double longitude, int maxResults,

                GeocoderParams params, List<Address> addrs) {

            return GeocodeProvider.this.onGetFromLocation(latitude, longitude, maxResults,

                    params, addrs);

        }

        public String getFromLocationName(String locationName,

                double lowerLeftLatitude, double lowerLeftLongitude,

                double upperRightLatitude, double upperRightLongitude, int maxResults,

                GeocoderParams params, List<Address> addrs) {

            return GeocodeProvider.this.onGetFromLocationName(locationName, lowerLeftLatitude,

                    lowerLeftLongitude, upperRightLatitude, upperRightLongitude,

                    maxResults, params, addrs);

        }

    };

    /**

     * This method is overridden to implement the

     * {@link android.location.Geocoder#getFromLocation(double, double, int)} method.

     * Classes implementing this method should not hold a reference to the params parameter.

     */

    public abstract String onGetFromLocation(double latitude, double longitude, int maxResults,

            GeocoderParams params, List<Address> addrs);

    /**

     * This method is overridden to implement the

     * {@link android.location.Geocoder#getFromLocationName(String, int, double, double, double, double)} method.

     * Classes implementing this method should not hold a reference to the params parameter.

     */

    public abstract String onGetFromLocationName(String locationName,

            double lowerLeftLatitude, double lowerLeftLongitude,

            double upperRightLatitude, double upperRightLongitude, int maxResults,

            GeocoderParams params, List<Address> addrs);

    /**

     * Returns the Binder interface for the geocode provider.

     * This is intended to be used for the onBind() method of

     * a service that implements a geocoder service.

     *

     * @return the IBinder instance for the provider

     */

    public IBinder getBinder() {

        return mProvider;

    }

}

/*

 * Copyright (C) 2010 The Android Open Source Project

 *

 * 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 com.android.location.provider;

import java.io.FileDescriptor;

import java.io.FileOutputStream;

import java.io.PrintWriter;

import android.content.Context;

import android.location.ILocationManager;

import android.location.Location;

import android.location.LocationManager;

import android.location.LocationRequest;

import android.os.Bundle;

import android.os.IBinder;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.os.WorkSource;

import android.util.Log;

import com.android.internal.location.ILocationProvider;

import com.android.internal.location.ProviderProperties;

import com.android.internal.location.ProviderRequest;

/**

 * Base class for location providers implemented as unbundled services.

 *

 * <p>The network location provider must export a service with action

 * "com.android.location.service.v2.NetworkLocationProvider"

 * and a valid minor version in a meta-data field on the service, and

 * then return the result of {@link #getBinder()} on service binding.

 *

 * <p>The fused location provider must export a service with action

 * "com.android.location.service.FusedLocationProvider"

 * and a valid minor version in a meta-data field on the service, and

 * then return the result of {@link #getBinder()} on service binding.

 *

 * <p>IMPORTANT: This class is effectively a public API for unbundled

 * applications, and must remain API stable. See README.txt in the root

 * of this package for more information.

 */

public abstract class LocationProviderBase {

    private final String TAG;

    protected final ILocationManager mLocationManager;

    private final ProviderProperties mProperties;

    private final IBinder mBinder;

    /**

     * Bundle key for a version of the location containing no GPS data.

     * Allows location providers to flag locations as being safe to

     * feed to LocationFudger.

     */

    public static final String EXTRA_NO_GPS_LOCATION = Location.EXTRA_NO_GPS_LOCATION;

    /**

     * Name of the Fused location provider.

     *

     * <p>This provider combines inputs for all possible location sources

     * to provide the best possible Location fix.

     */

    public static final String FUSED_PROVIDER = LocationManager.FUSED_PROVIDER;

    private final class Service extends ILocationProvider.Stub {

        @Override

        public void enable() {

            onEnable();

        }

        @Override

        public void disable() {

            onDisable();

        }

        @Override

        public void setRequest(ProviderRequest request, WorkSource ws) {

            onSetRequest(new ProviderRequestUnbundled(request), ws);

        }

        @Override

        public ProviderProperties getProperties() {

            return mProperties;

        }

        @Override

        public int getStatus(Bundle extras) {

            return onGetStatus(extras);

        }

        @Override

        public long getStatusUpdateTime() {

            return onGetStatusUpdateTime();

        }

        @Override

        public boolean sendExtraCommand(String command, Bundle extras) {

            return onSendExtraCommand(command, extras);

        }

        @Override

        public void dump(FileDescriptor fd, String[] args) {

            PrintWriter pw = new PrintWriter(new FileOutputStream(fd));

            onDump(fd, pw, args);

            pw.flush();

        }

    }

    public LocationProviderBase(String tag, ProviderPropertiesUnbundled properties) {

        TAG = tag;

        IBinder b = ServiceManager.getService(Context.LOCATION_SERVICE);

        mLocationManager = ILocationManager.Stub.asInterface(b);

        mProperties = properties.getProviderProperties();

        mBinder = new Service();

    }

    public IBinder getBinder() {

        return mBinder;

    }

    /**

     * Used by the location provider to report new locations.

     *

     * @param location new Location to report

     *

     * Requires the android.permission.INSTALL_LOCATION_PROVIDER permission.

     */

    public final void reportLocation(Location location) {

        try {

            mLocationManager.reportLocation(location, false);

        } catch (RemoteException e) {

            Log.e(TAG, "RemoteException", e);

        } catch (Exception e) {

            // never crash provider, might be running in a system process

            Log.e(TAG, "Exception", e);

        }

    }

    /**

     * Enable the location provider.

     * <p>The provider may initialize resources, but does

     * not yet need to report locations.

     */

    public abstract void onEnable();

    /**

     * Disable the location provider.

     * <p>The provider must release resources, and stop

     * performing work. It may no longer report locations.

     */

    public abstract void onDisable();

    /**

     * Set the {@link ProviderRequest} requirements for this provider.

     * <p>Each call to this method overrides all previous requests.

     * <p>This method might trigger the provider to start returning

     * locations, or to stop returning locations, depending on the

     * parameters in the request.

     */

    public abstract void onSetRequest(ProviderRequestUnbundled request, WorkSource source);

    /**

     * Dump debug information.

     */

    public void onDump(FileDescriptor fd, PrintWriter pw, String[] args) {

    }

    /**

     * Returns a information on the status of this provider.

     * <p>{@link android.location.LocationProvider#OUT_OF_SERVICE} is returned if the provider is

     * out of service, and this is not expected to change in the near

     * future; {@link android.location.LocationProvider#TEMPORARILY_UNAVAILABLE} is returned if

     * the provider is temporarily unavailable but is expected to be

     * available shortly; and {@link android.location.LocationProvider#AVAILABLE} is returned

     * if the provider is currently available.

     *

     * <p>If extras is non-null, additional status information may be

     * added to it in the form of provider-specific key/value pairs.

     */

    public abstract int onGetStatus(Bundle extras);

    /**

     * Returns the time at which the status was last updated. It is the

     * responsibility of the provider to appropriately set this value using

     * {@link android.os.SystemClock#elapsedRealtime SystemClock.elapsedRealtime()}.

     * there is a status update that it wishes to broadcast to all its

     * listeners. The provider should be careful not to broadcast

     * the same status again.

     *

     * @return time of last status update in millis since last reboot

     */

    public abstract long onGetStatusUpdateTime();

    /**

     * Implements addditional location provider specific additional commands.

     *

     * @param command name of the command to send to the provider.

     * @param extras optional arguments for the command (or null).

     * The provider may optionally fill the extras Bundle with results from the command.

     *

     * @return true if the command succeeds.

     */

    public boolean onSendExtraCommand(String command, Bundle extras) {

        // default implementation

        return false;

    }

}