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Bryce Curtis 2012-05-14 23:19:15 -05:00
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commit e660768e4b
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framework/src/org/apache/cordova/GpsListener.java
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/*
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you 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.apache.cordova;
import org.apache.cordova.api.CordovaInterface;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
import android.location.LocationListener;
import android.os.Bundle;
/**
* This class handles requests for GPS location services.
*
*/
public class GpsListener implements LocationListener {
private CordovaInterface mCtx; // CordovaActivity object
private LocationManager mLocMan; // Location manager object
private GeoListener owner; // Geolistener object (parent)
private boolean hasData = false; // Flag indicates if location data is available in cLoc
private Location cLoc; // Last recieved location
private boolean running = false; // Flag indicates if listener is running
/**
* Constructor.
* Automatically starts listening.
*
* @param ctx
* @param interval
* @param m
*/
public GpsListener(CordovaInterface ctx, int interval, GeoListener m) {
this.owner = m;
this.mCtx = ctx;
this.mLocMan = (LocationManager) this.mCtx.getActivity().getSystemService(Context.LOCATION_SERVICE);
this.running = false;
this.start(interval);
}
/**
* Get last location.
*
* @return Location object
*/
public Location getLocation() {
this.cLoc = this.mLocMan.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (this.cLoc != null) {
this.hasData = true;
}
return this.cLoc;
}
/**
* Called when the provider is disabled by the user.
*
* @param provider
*/
public void onProviderDisabled(String provider) {
this.owner.fail(GeoListener.POSITION_UNAVAILABLE, "GPS provider disabled.");
}
/**
* Called when the provider is enabled by the user.
*
* @param provider
*/
public void onProviderEnabled(String provider) {
System.out.println("GpsListener: The provider " + provider + " is enabled");
}
/**
* Called when the provider status changes. This method is called when a
* provider is unable to fetch a location or if the provider has recently
* become available after a period of unavailability.
*
* @param provider
* @param status
* @param extras
*/
public void onStatusChanged(String provider, int status, Bundle extras) {
System.out.println("GpsListener: The status of the provider " + provider + " has changed");
if (status == 0) {
System.out.println("GpsListener: " + provider + " is OUT OF SERVICE");
this.owner.fail(GeoListener.POSITION_UNAVAILABLE, "GPS out of service.");
}
else if (status == 1) {
System.out.println("GpsListener: " + provider + " is TEMPORARILY_UNAVAILABLE");
}
else {
System.out.println("GpsListener: " + provider + " is Available");
}
}
/**
* Called when the location has changed.
*
* @param location
*/
public void onLocationChanged(Location location) {
System.out.println("GpsListener: The location has been updated!");
this.hasData = true;
this.cLoc = location;
this.owner.success(location);
}
/**
* Determine if location data is available.
*
* @return
*/
public boolean hasLocation() {
return this.hasData;
}
/**
* Start requesting location updates.
*
* @param interval
*/
public void start(int interval) {
if (!this.running) {
this.running = true;
this.mLocMan.requestLocationUpdates(LocationManager.GPS_PROVIDER, interval, 0, this);
this.getLocation();
// If GPS provider has data, then send now
if (this.hasData) {
this.owner.success(this.cLoc);
}
}
}
/**
* Stop receiving location updates.
*/
public void stop() {
if (this.running) {
this.mLocMan.removeUpdates(this);
}
this.running = false;
}
}