Open file in SDCard on Android

–1 vote

I have written the code below, but I keep receiving errors about Path Separator.

btn_guardar.setOnClickListener(new View.OnClickListener() {


        public void onClick(View arg0) {

            final String CP7_String = et_id.getText().toString();
            final String ncontagem_String = et_ncontagem.getText().toString();



        Thread thread = new Thread () {
                public void run() {

                      String PATH=null ;


                            FileOutputStream fileos = null;
                            try{



                                    if(fileos==null)
                                {

                                    // If the file don't exists

                                    File file = new File(Environment.getExternalStorageDirectory().toString()+"/xml_nova_contagem.xml" );




                                    fileos = new FileOutputStream(file);




                                }
                                        // If the file exists


                        /////////-------- THIS METHOD WON'T WORK --------///////


                                    /*  if (fileos!=null){


                                           System.out.println("aqui vai dar bronca: " + Environment.getExternalStorageDirectory().toString());


                                    //     PATH = Environment.getExternalStorageDirectory().toString() + "/xml_nova_contagem.xml";
                                           Context context= getApplicationContext();

                                           fileos = context.openFileOutput("xml_nova_contagem.xml", Context.MODE_APPEND);

                                           System.out.println("okkkkkkkkk ");
                                            }
                                             */

                            XmlSerializer serializer = Xml.newSerializer();
                            try{

                                serializer.setOutput(fileos, "iso-8859-1");
                                serializer.startDocument(null, Boolean.valueOf(true));

                                serializer.startTag(null, "CodigoPostal");
                                serializer.startTag(null, "CP7");
                                serializer.text(CP7_String);
                                serializer.endTag(null,"CP7");
                                serializer.startTag(null,"NovaContagem");
                                serializer.text(ncontagem_String);
                                serializer.endTag(null, "NovaContagem");
                                serializer.endTag(null, "CodigoPostal");
                                serializer.endDocument();
                                serializer.flush();
                                fileos.close();

                                System.out.println("endddddddddda");


                                }catch(Exception ee)
                                {

                                    System.out.println("Exception"+ee);
                                }


                        }
                    catch (Exception e) {

                        System.out.println("Erro a escrever"+e);
                        System.out.println("path"+PATH);
                    } 



               }



                    };thread.start();



        }
    });

}

}
I need to open a file in my SDCard, but i can't open it
Jun 19, 2022 in Others by polo
• 1,480 points
39,856 views

1 answer to this question.

+1 vote

To open a file that is on the External Storage or the SD card:

 File root = new File(Environment.getExternalStorageDirectory(), "Your folder");
 File gpxfile = new File(root, "xml_nova_contagem.xml");

Remember that if your app is working with the SD card you need to manage the scenarios where the SD card is not mounted, etc. 

If your xml document works as database, or you are going to save critical information here, I suggest that you should create this xml file in the Internal Storage.

answered Jun 20, 2022 by nisha
• 2,210 points

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