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POExporting GPS data from a database into GPX or KML in android
 

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    <p>I'm developing an app which tracks gps coordinates and stores them into seperate tables in a database. I want to export the gps data from the tables into GPX or KML format. I can't really find any tutorials nor explanations how to do this. Should i just write the lat and lon coordinates into a file between tags? Or is there any requirements that my file needs to meet?</p> <p>My implemented code:</p> <pre><code> File directory = Environment.getExternalStorageDirectory(); if (directory.canWrite()){ File kmlFile = new File(directory, "" + table + ".kml"); FileWriter fileWriter = new FileWriter(kmlFile); BufferedWriter outWriter = new BufferedWriter(fileWriter); outWriter.write("&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;" + "\n &lt;kml xmlns=\"http://www.opengis.net/kml/2.2\"&gt;" + "\n &lt;Document&gt;" + "\n"); for (int i = 0; i&lt;latArrayList.size();i++){ outWriter.write("&lt;Placemark&gt;" + "\n &lt;name&gt;" + i + "&lt;/name&gt;" + "\n &lt;description&gt; &lt;/description&gt;" + "\n &lt;Point&gt;" + "\n &lt;coordinates&gt;" + latArrayList.get(i) + "," + lonArrayList.get(i) + "&lt;/coordinates&gt;" + "\n &lt;/Point&gt;" + "\n &lt;/Placemark&gt;" + "\n"); } outWriter.write("&lt;/Document&gt;" + "\n &lt;/kml&gt;"); outWriter.close(); </code></pre> <p>and a kml file sample which i load into google maps and shows wrong coordinates:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;kml xmlns="http://www.opengis.net/kml/2.2"&gt; &lt;Document&gt; &lt;Placemark&gt; &lt;name&gt;0&lt;/name&gt; &lt;description&gt; &lt;/description&gt; &lt;Point&gt; &lt;coordinates&gt;46.09312,18.22501 &lt;/coordinates&gt; &lt;/Point&gt; &lt;/Placemark&gt; &lt;Placemark&gt; &lt;name&gt;1&lt;/name&gt; &lt;description&gt; &lt;/description&gt; &lt;Point&gt; &lt;coordinates&gt;46.09317333333333,18.22474833333333 &lt;/coordinates&gt; &lt;/Point&gt; &lt;/Placemark&gt; &lt;Placemark&gt; &lt;name&gt;2&lt;/name&gt; &lt;description&gt; &lt;/description&gt; &lt;Point&gt; &lt;coordinates&gt;46.093138333333336,18.22449 &lt;/coordinates&gt; &lt;/Point&gt; &lt;/Placemark&gt; &lt;/Placemark&gt; &lt;/Document&gt; &lt;/kml&gt; </code></pre>
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