yes,i got the solution
Thanks
On Thu, Feb 25, 2010 at 4:27 PM, Upendra Chintala <
upendra.chint...@gmail.com> wrote:
> Read your code properly, you will get the problem. Check what is the file
> name("stations") given in your ReadXML file? It should be with extension
> .xml.
>
> Other than this, there is other way to store and read the files using
> openFileInput and openFileOutput of the activity context. I guess those are
> the best methods to access files.
>
> Thanks,
> Upendra
>
>
> On Thu, Feb 25, 2010 at 4:17 PM, kavitha <kavith...@gmail.com> wrote:
>
>>
>> private String DOWNFILE = "stations.xml";
>> File stations;
>>
>> //////////////////////////////////code to store file
>>
>> stations = new File(context.getCacheDir(),DOWNFILE);
>> url="
>> http://www.permeative.com/projects/TimeShiftRadio/AppData/IndiaRadioStations.xml
>> ";
>> try{
>> connection = new URL(url).openConnection();
>> connection.connect();
>> InputStream stream = connection.getInputStream();
>> if (stream == null) {
>> Log.e(TAG, "Unable to create InputStream for
>> mediaUrl: "+url);
>> }
>> FileOutputStream fos = new FileOutputStream(stations);
>>
>> byte buf[] = new byte[16 * 1024];
>> do {
>> int numread = stream.read(buf);
>> if (numread <= 0) {
>> break;
>> } else {
>> fos.write(numread);
>> }
>> } while (true);
>> fos.close();
>>
>> }catch(Exception e){
>> System.out.println("CANNOT DOWNLOAD STATIONS");
>> e.printStackTrace();
>> }
>>
>>
>> /////////////////////////////////////code to parse xml
>> try{
>> if(stations.exists() && stations.canRead()){
>> ReadXML readXML=new ReadXML();
>> readXML.readFile(context,stations);
>> }
>>
>> }catch(Exception e){
>> Log.e(TAG, "unable to read from file " + e);
>> e.printStackTrace();
>> }
>>
>>
>> /////////////////////////////////////////////////////ReadXML.java looks
>> like this
>>
>> public class ReadXML{
>> private String DOWNFILE = "stations";
>>
>>
>>
>> public void readFile (Context context,File file){
>> try {
>>
>> DocumentBuilderFactory docBuilderFactory =
>> DocumentBuilderFactory.newInstance();
>> DocumentBuilder docBuilder =
>> docBuilderFactory.newDocumentBuilder();
>> // File temp = new File(context.getCacheDir(),DOWNFILE);
>> // file=temp;
>> // Document doc = docBuilder.parse (new File(file.getName()));
>> Document doc = docBuilder.parse (file);
>>
>> // normalize text representation********************getting
>> error here,,telling filenotfound
>> doc.getDocumentElement ().normalize ();
>> System.out.println ("Root element of the doc is " +
>> doc.getDocumentElement().getNodeName());
>>
>> }
>>
>> }
>>
>> I am getting error in ReadXML.java file
>> doc.getDocumentElement ().normalize ();
>>
>>
>>
>>
>>
>> On Thu, Feb 25, 2010 at 4:11 PM, Upendra Chintala <
>> upendra.chint...@gmail.com> wrote:
>>
>>> Post you code here, that may help us to provide some solution to you.
>>> Without looking at the code it's hard to imagine where is that
>>> NullPointerException?
>>>
>>>
>>> On Thu, Feb 25, 2010 at 4:06 PM, kavitha <kavith...@gmail.com> wrote:
>>>
>>>> Actually I could write file to local cache using InputStreamReader.
>>>>
>>>> I am downloading bytes successfully and could write to a file,,,
>>>>
>>>> But again if i try to open file and read it,,It is throwing
>>>> NullPointerException for file.
>>>>
>>>>
>>>> On Thu, Feb 25, 2010 at 4:00 PM, Upendra Chintala <
>>>> upendra.chint...@gmail.com> wrote:
>>>>
>>>>> A simple search on google would have helped you.
>>>>>
>>>>>
>>>>> http://digiassn.blogspot.com/2008/10/java-simple-httpurlconnection-example.html
>>>>>
>>>>> Upendra
>>>>>
>>>>>
>>>>> On Thu, Feb 25, 2010 at 3:55 PM, kavitha <kavith...@gmail.com> wrote:
>>>>>
>>>>>> Any examples please
>>>>>>
>>>>>>
>>>>>> On Thu, Feb 25, 2010 at 3:53 PM, Upendra Chintala <
>>>>>> upendra.chint...@gmail.com> wrote:
>>>>>>
>>>>>>> You can use HttpURLConnection object to read the file as stream and
>>>>>>> then store it locally.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Upendra
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Feb 25, 2010 at 3:49 PM, kavitha <kavith...@gmail.com>wrote:
>>>>>>>
>>>>>>>> first download and keep the file
>>>>>>>>
>>>>>>>> then parse it,,,,
>>>>>>>>
>>>>>>>> i need to download bcoz when the application launches second time,,i
>>>>>>>> need to use stored file without re-downloading
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, Feb 25, 2010 at 3:47 PM, Sandeep Phansekar <
>>>>>>>> sandeep.phanse...@gmail.com> wrote:
>>>>>>>>
>>>>>>>>> want to just download ? or parse the file ?
>>>>>>>>> --
>>>>>>>>> Regards
>>>>>>>>> Sandeep
>>>>>>>>>
>>>>>>>>> On Thu, Feb 25, 2010 at 3:39 PM, kavitha <kavith...@gmail.com>wrote:
>>>>>>>>>
>>>>>>>>>> Hi All,
>>>>>>>>>>
>>>>>>>>>> Please tell how to download an xml file from url connection in
>>>>>>>>>> android?
>>>>>>>>>>
>>>>>>>>>> Thanks
>>>>>>>>>>
>>>>>>>>>> Kavitha
>>>>>>>>>>
>>>>>>>>>> --
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
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>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Regards,
>>>>>>> Upendra
>>>>>>>
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>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Regards,
>>>>> Upendra
>>>>>
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>>>>>
>>>>
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>>>
>>>
>>>
>>> --
>>> Regards,
>>> Upendra
>>>
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>>
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>>
>
>
>
> --
> Regards,
> Upendra
>
> --
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