Initial release

AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="org.traccar.client"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
+        <activity android:name="TraccarActivity"
+                  android:label="@string/app_name"
+                  android:windowSoftInputMode="stateHidden">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <service android:name=".TraccarService" />
+    </application>
+    <uses-sdk android:minSdkVersion="4" 
+              android:targetSdkVersion="16" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
+    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
+</manifest>

ant.properties

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+# This file is used to override default values used by the Ant build system.
+#
+# This file must be checked into Version Control Systems, as it is
+# integral to the build system of your project.
+
+# This file is only used by the Ant script.
+
+# You can use this to override default values such as
+#  'source.dir' for the location of your java source folder and
+#  'out.dir' for the location of your output folder.
+
+# You can also use it define how the release builds are signed by declaring
+# the following properties:
+#  'key.store' for the location of your keystore and
+#  'key.alias' for the name of the key to use.
+# The password will be asked during the build when you use the 'release' target.
+

build.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project name="TraccarClient" default="help">
+
+    <!-- The local.properties file is created and updated by the 'android' tool.
+         It contains the path to the SDK. It should *NOT* be checked into
+         Version Control Systems. -->
+    <property file="local.properties" />
+
+    <!-- The ant.properties file can be created by you. It is only edited by the
+         'android' tool to add properties to it.
+         This is the place to change some Ant specific build properties.
+         Here are some properties you may want to change/update:
+
+         source.dir
+             The name of the source directory. Default is 'src'.
+         out.dir
+             The name of the output directory. Default is 'bin'.
+
+         For other overridable properties, look at the beginning of the rules
+         files in the SDK, at tools/ant/build.xml
+
+         Properties related to the SDK location or the project target should
+         be updated using the 'android' tool with the 'update' action.
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems.
+
+         -->
+    <property file="ant.properties" />
+
+    <!-- if sdk.dir was not set from one of the property file, then
+         get it from the ANDROID_HOME env var.
+         This must be done before we load project.properties since
+         the proguard config can use sdk.dir -->
+    <property environment="env" />
+    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
+        <isset property="env.ANDROID_HOME" />
+    </condition>
+
+    <!-- The project.properties file is created and updated by the 'android'
+         tool, as well as ADT.
+
+         This contains project specific properties such as project target, and library
+         dependencies. Lower level build properties are stored in ant.properties
+         (or in .classpath for Eclipse projects).
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems. -->
+    <loadproperties srcFile="project.properties" />
+
+    <!-- quick check on sdk.dir -->
+    <fail
+            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
+            unless="sdk.dir"
+    />
+
+    <!--
+        Import per project custom build rules if present at the root of the project.
+        This is the place to put custom intermediary targets such as:
+            -pre-build
+            -pre-compile
+            -post-compile (This is typically used for code obfuscation.
+                           Compiled code location: ${out.classes.absolute.dir}
+                           If this is not done in place, override ${out.dex.input.absolute.dir})
+            -post-package
+            -post-build
+            -pre-clean
+    -->
+    <import file="custom_rules.xml" optional="true" />
+
+    <!-- Import the actual build file.
+
+         To customize existing targets, there are two options:
+         - Customize only one target:
+             - copy/paste the target into this file, *before* the
+               <import> task.
+             - customize it to your needs.
+         - Customize the whole content of build.xml
+             - copy/paste the content of the rules files (minus the top node)
+               into this file, replacing the <import> task.
+             - customize to your needs.
+
+         ***********************
+         ****** IMPORTANT ******
+         ***********************
+         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
+         in order to avoid having your file be overridden by tools such as "android update project"
+    -->
+    <!-- version-tag: 1 -->
+    <import file="${sdk.dir}/tools/ant/build.xml" />
+
+</project>

icon.svg

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local.properties

@@ -0,0 +1,10 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+
+# location of the SDK. This is only used by Ant
+# For customization when using a Version Control System, please read the
+# header note.
+sdk.dir=/home/user/Documents/android-sdk-linux

proguard-project.txt

@@ -0,0 +1,20 @@
+# To enable ProGuard in your project, edit project.properties
+# to define the proguard.config property as described in that file.
+#
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${sdk.dir}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the ProGuard
+# include property in project.properties.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

project.properties

@@ -0,0 +1,14 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-16

res/layout/main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content">
+<LinearLayout
+    android:orientation="vertical"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center"
+    android:padding="20sp"
+    >
+<TextView
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:text="Server address"
+    />
+<EditText
+    android:id="@+id/edit_address"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:inputType="textUri"
+    />
+<View
+    android:layout_width="fill_parent"
+    android:layout_height="10sp"
+    />
+<TextView
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:text="Server port"
+    />
+<EditText
+    android:id="@+id/edit_port"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:inputType="number"
+    />
+<View
+    android:layout_width="fill_parent"
+    android:layout_height="10sp"
+    />
+<TextView
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:text="Frequency in seconds"
+    />
+<EditText
+    android:id="@+id/edit_period"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:inputType="number"
+    />
+<View
+    android:layout_width="fill_parent"
+    android:layout_height="10sp"
+    />
+<TextView
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:text="Service status"
+    />
+<EditText
+    android:id="@+id/edit_service"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:inputType="none"
+    android:editable="false"
+    android:focusable="false"
+    />
+<View
+    android:layout_width="fill_parent"
+    android:layout_height="10sp"
+    />
+<TextView
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:text="Connection status"
+    />
+<EditText
+    android:id="@+id/edit_connection"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:inputType="none"
+    android:editable="false"
+    android:focusable="false"
+    />
+<View
+    android:layout_width="fill_parent"
+    android:layout_height="20sp"
+    />
+<ToggleButton 
+    android:id="@+id/button"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:textOn="ON"
+    android:textOff="OFF"
+    android:onClick="onButtonClick"
+    />
+</LinearLayout>
+</ScrollView>
+

res/menu/main.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<item android:id="@+id/about"
+      android:title="@string/about_option"
+      android:showAsAction="ifRoom" />
+</menu>
+

res/values/strings.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Traccar Client</string>
+    <string name="error_input">Invalid input parameters.</string>
+    <string name="about_option">About</string>
+    <string name="about_text">Android software GPS tracker. For more information visit:\n\nhttp://www.traccar.org</string>
+    <string name="about_close">Close</string>
+</resources>

src/org/traccar/client/Connection.java

@@ -0,0 +1,153 @@
+/*
+ * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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.traccar.client;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import android.os.Handler;
+import 	android.content.Intent;
+import android.content.Context;
+
+/**
+ * Connection with autoreconnect
+ */
+public class Connection {
+
+    private String address;
+    private int port;
+    
+    private String connectMessage;
+	
+    private Socket socket;
+    private OutputStream socketStream;
+
+    private String status;
+
+    private Context context;
+
+    /**
+     * Initialize connection parameters
+     */
+    public Connection(String address, int port, String message) {
+    	this.address = address;
+    	this.port = port;
+    	connectMessage = message;
+    	setStatus(Traccar.STATUS_DISCONNECTED);
+    }
+    
+    /**
+     * Get address
+     */
+    public String getAddress() {
+    	return address;
+    }
+    
+    /**
+     * Get port
+     */
+    public int getPort() {
+    	return port;
+    }
+
+    /**
+     * Set context
+     */
+    public void setContext(Context context) {
+    	this.context = context;
+    }
+    
+    /**
+     * Set connection status
+     */
+    private void setStatus(String status) {
+    	if (!status.equals(this.status)) {
+	    	this.status = status;
+	    	if (context != null) {
+	    		Intent intent = new Intent(Traccar.MSG_CONNECTION_STATUS);
+	    		intent.putExtra(Traccar.EXTRA_STATUS, status);
+	    		context.sendBroadcast(intent);
+	    	}
+    	}
+    }
+    
+    /**
+     * Get connection status
+     */
+    public String getStatus() {
+    	return status;
+    }
+    
+    /**
+     * Establish connection
+     */
+    public void connect() {
+        try {
+            socket = new Socket(address, port);
+            socket.setSoTimeout(Traccar.SOCKET_TIMEOUT);
+            socketStream = socket.getOutputStream();
+            setStatus(Traccar.STATUS_CONNECTED);
+            send(connectMessage);
+        } catch (Exception e) {
+            reconnect();
+        }
+    }
+    
+    /**
+     * Send message
+     */
+    public void send(String message) {
+        try {
+            if (socketStream != null) {
+                socketStream.write(message.getBytes());
+                socketStream.flush();
+            }
+        } catch (Exception e) {
+            reconnect();
+        }
+    }
+
+    /**
+     * Close connection
+     */
+    public void close() {
+    	handler.removeCallbacks(task);
+        if (socket != null) {
+            try {
+                socket.close();
+            } catch (Exception e) {
+            }
+            socket = null;
+        }
+        socketStream = null;
+        setStatus(Traccar.STATUS_DISCONNECTED);
+    }
+
+    private void reconnect() {
+    	close();
+        handler.postDelayed(task, Traccar.RECONNECT_DELAY);
+    }
+    
+    private Handler handler = new Handler();
+    private ReconnectTask task = new ReconnectTask();
+
+    class ReconnectTask implements Runnable {
+        @Override
+        public void run() {
+            connect();
+        }
+    }
+}

src/org/traccar/client/Protocol.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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.traccar.client;
+
+import java.util.Formatter;
+import android.location.Location;
+
+/**
+  * Protocol formatting
+  */
+public class Protocol {
+
+    /**
+     * Format device id message
+     */
+    public static String createId(String id) {
+        StringBuilder s = new StringBuilder("$PGID,");
+        Formatter f = new Formatter(s);
+
+        s.append(id);
+
+        byte checksum = 0;
+        for (byte b : s.substring(1).getBytes()) {
+            checksum ^= b;
+        }
+        f.format("*%02x\r\n", (int) checksum);
+
+        return s.toString();
+    }
+
+    /**
+     * Format location message
+     */
+    public static String createNmea(Location l) {
+        StringBuilder s = new StringBuilder("$GPRMC,");
+        Formatter f = new Formatter(s);
+
+        f.format("%1$tH%1$tM%1$tS.%1$tL,A,", l.getTime());
+
+        double lat = l.getLatitude();
+        double lon = l.getLongitude();
+        f.format("%02d%07.4f,%c,", (int) Math.abs(lat), Math.abs(lat) % 1 * 60, lat < 0 ? 'S' : 'N' );
+        f.format("%03d%07.4f,%c,", (int) Math.abs(lon), Math.abs(lon) % 1 * 60, lon < 0 ? 'W' : 'E' );
+
+        f.format("%.2f,%.2f,", l.getSpeed(), l.getBearing());
+        f.format("%1$td%1$tm%1$ty,,", l.getTime());
+
+        byte checksum = 0;
+        for (byte b : s.substring(1).getBytes()) {
+            checksum ^= b;
+        }
+        f.format("*%02x\r\n", (int) checksum);
+
+        return s.toString();
+    }
+}
+

src/org/traccar/client/TraccarActivity.java

@@ -0,0 +1,209 @@
+/*
+ * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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.traccar.client;
+
+import java.util.*;
+import android.app.*;
+import android.content.*;
+import android.os.*;
+import 	android.text.*;
+import android.text.method.*;
+import android.text.util.*;
+import android.view.*;
+import android.widget.*;
+
+/**
+ * Global parameters
+ */
+class Traccar {
+    public static final String EXTRA_ADDRESS = "address";
+    public static final String EXTRA_PORT = "port";
+    public static final String EXTRA_PERIOD = "period";
+    public static final String EXTRA_STATUS = "status";
+
+    public static final String DEFAULT_ADDRESS = "193.193.165.166";
+    public static final String DEFAULT_PORT = "20100";
+    public static final String DEFAULT_PERIOD = "60";
+
+    public static final String TRACCAR_SETTINGS = "traccar_settings";
+
+    public static final long RECONNECT_DELAY = 10 * 1000;
+    public static final int SOCKET_TIMEOUT = 2000;
+
+    public static final String MSG_UPDATE = "org.traccar.client.MSG_UPDATE";
+    public static final String MSG_SERVICE_CONFIG = "org.traccar.client.MSG_SERVICE_CONFIG";
+    public static final String MSG_SERVICE_STATUS = "org.traccar.client.SERVICE_STATUS";
+    public static final String MSG_CONNECTION_STATUS = "org.traccar.client.CONNECTION_STATUS";
+
+    public static final String STATUS_STOPPED = "Stopped";
+    public static final String STATUS_RUNNING = "Running";
+
+    public static final String STATUS_CONNECTED = "Connected";
+    public static final String STATUS_DISCONNECTED = "Disconnected";
+}
+
+/**
+ * Main user interface
+ */
+public class TraccarActivity extends Activity {
+
+	private EditText editAddress;
+    private EditText editPort;
+    private EditText editPeriod;
+    private EditText editService;
+    private EditText editConnection;
+    private ToggleButton button;
+
+    public boolean isServiceRunning() {
+        ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
+        List<ActivityManager.RunningServiceInfo> services = activityManager.getRunningServices(Integer.MAX_VALUE);
+        for (ActivityManager.RunningServiceInfo runningServiceInfo : services) {
+            if (runningServiceInfo.service.getClassName().equals(TraccarService.class.getName())){
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.main);
+
+        // Bind elements
+        editAddress = (EditText) findViewById(R.id.edit_address);
+        editPort = (EditText) findViewById(R.id.edit_port);
+        editPeriod = (EditText) findViewById(R.id.edit_period);
+        editService = (EditText) findViewById(R.id.edit_service);
+        editConnection = (EditText) findViewById(R.id.edit_connection);
+        button = (ToggleButton) findViewById(R.id.button);
+
+        editService.setText(Traccar.STATUS_STOPPED);
+        editConnection.setText(Traccar.STATUS_DISCONNECTED);
+        button.setChecked(isServiceRunning());
+    }
+    
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+    	//super.onCreateOptionsMenu(menu);
+    	MenuInflater inflater = getMenuInflater();
+    	inflater.inflate(R.menu.main, menu);
+    	return true;
+    }
+    
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) { 	
+    	if(item.getItemId() == R.id.about){
+    		showAboutDialog();
+    		return true;
+    	}
+    	return false;
+    }
+    
+    public void showAboutDialog() {
+        TextView message = new TextView(this);
+    	SpannableString str = new SpannableString(getString(R.string.about_text));
+    	Linkify.addLinks(str, Linkify.WEB_URLS);
+    	message.setText(str);
+    	message.setMovementMethod(LinkMovementMethod.getInstance());
+    	int padding = (int) (10 * getResources().getDisplayMetrics().scaledDensity);
+    	message.setPadding(padding, padding, padding, padding);
+
+    	AlertDialog.Builder dialog = new AlertDialog.Builder(this);
+        dialog.setTitle(R.string.about_option);
+        dialog.setView(message);
+        dialog.setPositiveButton(R.string.about_close, null);
+        dialog.show();
+    }
+
+    private BroadcastReceiver serviceConfigReceiver = new BroadcastReceiver() {
+    	public void onReceive(Context context, Intent intent) {
+    		editAddress.setText(intent.getStringExtra(Traccar.EXTRA_ADDRESS));
+    		editPort.setText(String.valueOf(intent.getIntExtra(Traccar.EXTRA_PORT, 0)));
+    		editPeriod.setText(String.valueOf(intent.getIntExtra(Traccar.EXTRA_PERIOD, 0)));
+    	}
+    };
+
+    private BroadcastReceiver serviceStatusReceiver = new BroadcastReceiver() {
+    	public void onReceive(Context context, Intent intent) {
+    		editService.setText(intent.getStringExtra(Traccar.EXTRA_STATUS));
+    	}
+    };
+
+    private BroadcastReceiver connectionStatusReceiver = new BroadcastReceiver() {
+    	public void onReceive(Context context, Intent intent) {
+    		editConnection.setText(intent.getStringExtra(Traccar.EXTRA_STATUS));
+    	}
+    };
+    
+    @Override
+    protected void onStart() {
+        super.onStart();
+        loadSettings();
+
+        // Register receivers
+        registerReceiver(serviceConfigReceiver, new IntentFilter(Traccar.MSG_SERVICE_CONFIG));
+        registerReceiver(serviceStatusReceiver, new IntentFilter(Traccar.MSG_SERVICE_STATUS));
+        registerReceiver(connectionStatusReceiver, new IntentFilter(Traccar.MSG_CONNECTION_STATUS));
+
+        // Request update
+        sendBroadcast(new Intent(Traccar.MSG_UPDATE));
+    }
+    
+    @Override
+    protected void onStop() {
+    	super.onStop();
+    	saveSettings();
+
+        // Unregister receivers
+    	unregisterReceiver(serviceConfigReceiver);
+    	unregisterReceiver(serviceStatusReceiver);
+    	unregisterReceiver(connectionStatusReceiver);
+    }
+
+    public void onButtonClick(View v) {
+        if (button.isChecked()) {
+            try {
+            	Intent serviceIntent = new Intent(this, TraccarService.class);
+                serviceIntent.putExtra(Traccar.EXTRA_ADDRESS, editAddress.getText().toString());
+                serviceIntent.putExtra(Traccar.EXTRA_PORT, Integer.parseInt(editPort.getText().toString()));
+                serviceIntent.putExtra(Traccar.EXTRA_PERIOD, Integer.parseInt(editPeriod.getText().toString()));
+                startService(serviceIntent);
+            } catch (NumberFormatException e) {
+                Toast.makeText(this, R.string.error_input, Toast.LENGTH_SHORT).show();
+                button.setChecked(false);
+            }
+        } else {
+            stopService(new Intent(this, TraccarService.class));
+        }
+    }
+
+    public void saveSettings() {
+    	SharedPreferences settings = getSharedPreferences(Traccar.TRACCAR_SETTINGS, 0);
+    	SharedPreferences.Editor editor = settings.edit();
+        editor.putString(Traccar.EXTRA_ADDRESS, editAddress.getText().toString());
+        editor.putString(Traccar.EXTRA_PORT, editPort.getText().toString());
+        editor.putString(Traccar.EXTRA_PERIOD, editPeriod.getText().toString());
+        editor.commit();
+    }
+    
+    public void loadSettings() {
+    	SharedPreferences settings = getSharedPreferences(Traccar.TRACCAR_SETTINGS, 0);
+    	editAddress.setText(settings.getString(Traccar.EXTRA_ADDRESS, Traccar.DEFAULT_ADDRESS));
+    	editPort.setText(settings.getString(Traccar.EXTRA_PORT, Traccar.DEFAULT_PORT));
+    	editPeriod.setText(settings.getString(Traccar.EXTRA_PERIOD, Traccar.DEFAULT_PERIOD));
+    }
+}

src/org/traccar/client/TraccarService.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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.traccar.client;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import android.app.Service;
+import android.content.*;
+import android.location.*;
+import android.os.*;
+import android.telephony.TelephonyManager;
+import android.widget.Toast;
+
+/**
+ * Background service
+ */
+public class TraccarService extends Service implements LocationListener {
+
+	private int period;
+	private String deviceId;
+    private Connection connection;
+    private LocationManager locationManager;
+
+    /*
+     * Location methods
+     */
+
+    @Override
+    public void onLocationChanged(Location location) {
+        connection.send(Protocol.createNmea(location));
+    }
+
+    @Override
+    public void onProviderDisabled(String provider) {
+    }
+
+    @Override
+    public void onProviderEnabled(String provider) {
+    }
+
+    @Override
+    public void onStatusChanged(String provider, int status, Bundle extras) {
+    }
+
+    /*
+     * Status methods 
+     */
+
+    private String status;
+    
+    private void setStatus(String status) {
+    	if (!status.equals(this.status)) {
+	    	this.status = status;
+    		Intent intent = new Intent(Traccar.MSG_SERVICE_STATUS);
+    		intent.putExtra(Traccar.EXTRA_STATUS, status);
+    		sendBroadcast(intent);
+    	}
+    }
+
+    private BroadcastReceiver updateReceiver = new BroadcastReceiver() {
+    	public void onReceive(Context context, Intent intent) {
+    		// Send config
+    		intent = new Intent(Traccar.MSG_SERVICE_CONFIG);
+    		intent.putExtra(Traccar.EXTRA_ADDRESS, connection.getAddress());
+    		intent.putExtra(Traccar.EXTRA_PORT, connection.getPort());
+    		intent.putExtra(Traccar.EXTRA_PERIOD, period);
+    		sendBroadcast(intent);
+    		
+    		// Send service status
+    		intent = new Intent(Traccar.MSG_SERVICE_STATUS);
+    		intent.putExtra(Traccar.EXTRA_STATUS, status);
+    		sendBroadcast(intent);
+    		
+    		// Send connection status
+    		intent = new Intent(Traccar.MSG_CONNECTION_STATUS);
+    		intent.putExtra(Traccar.EXTRA_STATUS, connection.getStatus());
+    		sendBroadcast(intent);
+    	}
+    };
+
+    /*
+     * Service methods
+     */
+    
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+    	// Read device id
+    	TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
+        deviceId = telephonyManager.getDeviceId();
+
+    	// Create connection
+    	connection = new Connection(
+    			intent.getStringExtra(Traccar.EXTRA_ADDRESS),
+    			intent.getIntExtra(Traccar.EXTRA_PORT, 0),
+    			Protocol.createId(deviceId));
+    	connection.setContext(this);
+    	connection.connect();
+
+    	// Request location updates
+    	locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
+        period = intent.getIntExtra(Traccar.EXTRA_PERIOD, 0);
+        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, period * 1000, 0, this);
+
+        // Report status
+        registerReceiver(updateReceiver, new IntentFilter(Traccar.MSG_UPDATE));
+        setStatus(Traccar.STATUS_RUNNING);
+        return START_STICKY;
+    }
+
+    @Override
+    public void onDestroy() {
+    	// Close connection
+    	connection.close();
+    	
+    	// Stop location updates
+        locationManager.removeUpdates(this);
+
+        // Report status
+        unregisterReceiver(updateReceiver);
+        setStatus(Traccar.STATUS_STOPPED);
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+}