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POOne little problem when exporting a file to SDCARD
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  1. POOne little problem when exporting a file to SDCARD
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    copied!<p>I'm facing a problem: I have a stored data on /data/data/files and o have a menu button "export", when i tap on it the file is well exported in the SDCARD but with 0 as size (no data inside the file). export.class code:</p> <pre><code>public Export(Context context,String nom) { this.context = context; this.nom=nom; } public void transfer(){ try { File sdCard = Environment.getExternalStorageDirectory(); boolean mExternalStorageAvailable = false; boolean mExternalStorageWriteable = false; String state = Environment.getExternalStorageState(); if (Environment.MEDIA_MOUNTED.equals(state)) { // We can read and write the media Log.d("Carburant", "Sdcard can read/write !!" ); mExternalStorageAvailable = mExternalStorageWriteable = true; File dir = new File (sdCard.getAbsolutePath() + "/Carburant/"); dir.mkdirs(); File file = new File(dir, "settings.dat"); //FileOutputStream f = new FileOutputStream(file); copyfile(nom,file.getAbsolutePath()); } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) { // We can only read the media Log.d("Carburant", "Sdcard only read !!" ); mExternalStorageAvailable = true; mExternalStorageWriteable = false; } else { // Something else is wrong. It may be one of many other states, but all we need // to know is we can neither read nor write mExternalStorageAvailable = mExternalStorageWriteable = false; } } catch (Exception e) { Log.d("CARBURANT", e.getMessage()); } } private void copyfile(String srFile, String dtFile){ try{ File f1 = new File(srFile); File f2 = new File(dtFile); InputStream in = new FileInputStream(f1); OutputStream out = new FileOutputStream(f2); byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) &gt; 0){ out.write(buf, 0, len); } in.close(); out.close(); Toast.makeText(context, "Export effectué", Toast.LENGTH_SHORT).show(); } catch(FileNotFoundException ex){ Toast.makeText(context, "File Not found", Toast.LENGTH_SHORT).show(); String x=ex.getMessage(); Log.d("Carburant", x); } catch(IOException e){ Toast.makeText(context, "Echec", Toast.LENGTH_SHORT).show(); } } } </code></pre> <p>Code where to write to the file:</p> <pre><code>if (data != "" ) { SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context); String fileName = getResources().getString(R.string.fileName); String fileDir = ""+ preferences.getString("login", "") + "."+ preferences.getString("marque", "") + "."; myIO.WriteSettings(context,fileDir+fileName, data); data = ""; </code></pre> <p>WriteSettings method:</p> <pre><code>public static void WriteSettings(Context context, String nom, String data) { FileOutputStream fOut = null; OutputStreamWriter osw = null; try { fOut = context.openFileOutput(nom, Context.MODE_APPEND); osw = new OutputStreamWriter(fOut); osw.write(data); osw.flush(); osw.close(); fOut.close(); </code></pre> <p>Menu export button:</p> <pre><code>case R.id.export: String mainDirPath = this.getFilesDir() + File.separator + "settings.dat"; FileOutputStream fos; try { fos = this.openFileOutput("settings.dat", Context.MODE_PRIVATE); Export myExport = new Export(this,mainDirPath); myExport.transfer(); } catch (FileNotFoundException e) { Log.d("Carburant","File Not found"); }catch(IOException e){ Log.d("Carburant","ERROR"); } return true; </code></pre> <p>Edited menu export button:</p> <pre><code>case R.id.exporter: final SharedPreferences preferences = PreferenceManager .getDefaultSharedPreferences(context); String fileName = getResources().getString(R.string.fileName); fileDir = "" + preferences.getString("login", "") + "."+ preferences.getString("marque", "") + "."; String mainDirPath = this.getFilesDir() + File.separator + fileDir+fileName; Log.d("Carburant",mainDirPath); FileOutputStream fos; try { fos = this.openFileOutput(fileDir+fileName, Context.MODE_PRIVATE); Export myExport = new Export(this,mainDirPath); myExport.transfer(); } catch (FileNotFoundException e) { Log.d("Carburant","File Not found"); }catch(IOException e){ Log.d("Carburant","ERROR"); } return true; </code></pre> <p>Thank you for your help.</p>
 

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