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    <p>As Shashank kadhe mentioned try this in your onPostExecute method and please change it according to your own need. </p> <pre><code>protected void onPostExecute(String file_url) { String fileName = editText.getText().toString(); String keyName = editText2.getText().toString(); File sdcard = Environment.getExternalStorageDirectory(); File file = new File(sdcard , fileName); File key = new File(sdcard, keyName); BufferedReader brFile; String Cipher = null; try{ //Read file line by line and concat each line of string in file with space character. FileInputStream fstream = new FileInputStream(file); brFile = new BufferedReader(new InputStreamReader(fstream)); String tempString; while((tempString = brFile.readLine()) != null){ if(Cipher == null){ Cipher = tempString; }else{ Cipher = Cipher.concat(" "); Cipher = Cipher.concat(tempString); } } }catch(Exception e){ //messageBox("Decrypt", e.getMessage()); } BufferedReader brKey; String DecKey = null; try{ FileInputStream fstream = new FileInputStream(key); brKey = new BufferedReader(new InputStreamReader(fstream)); DecKey = brKey.readLine(); }catch(Exception e){ //messageBox("Decrypt", e.getMessage()); } try{ byte[] cipherByte = DES.parseBytes(Cipher); String decKey = DES.convertStringToHex(DecKey); byte[] keyByte = DES.parseBytes(decKey); String decryptResult = DES.hex(DES.decryptCBC(cipherByte, keyByte)); String temp = decryptResult.replace(" ", ""); String finalDecrypt = temp.substring(0, (temp.length() - DES.getConcatCount())); String finResult = DES.convertHexToString(finalDecrypt); TextView FinalResult = (TextView)findViewById(R.id.decryptText); FinalResult.setText(finResult); }catch(Exception e){ messageBox("Decrypt", "Please Upload File Properly"); } } Since it's work fine, I try to implement this method with Async Task for running my work in background. The class that implemented shown below: private class runDecrypt extends AsyncTask &lt;URL , Integer, Long&gt; { private final ProgressDialog dialog = new ProgressDialog(Homepage.this); AlertDialog.Builder builder = new AlertDialog.Builder(Homepage.this); @SuppressWarnings("resource") @Override protected Long doInBackground(URL... params) { EditText editText = (EditText) findViewById(R.id.fileName); EditText editText2 = (EditText) findViewById(R.id.keyName); String fileName = editText.getText().toString(); String keyName = editText2.getText().toString(); File sdcard = Environment.getExternalStorageDirectory(); File file = new File(sdcard , fileName); File key = new File(sdcard, keyName); BufferedReader brFile; String Cipher = null; try{ //Read file line by line and concat each line of string in file with space character. FileInputStream fstream = new FileInputStream(file); brFile = new BufferedReader(new InputStreamReader(fstream)); String tempString; try { while((tempString = brFile.readLine()) != null){ if(Cipher == null){ Cipher = tempString; }else{ Cipher = Cipher.concat(" "); Cipher = Cipher.concat(tempString); } } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } }catch(java.io.FileNotFoundException e){ System.out.println("File could not be found."); } BufferedReader brKey; String DecKey = null; try{ FileInputStream fstream = new FileInputStream(key); brKey = new BufferedReader(new InputStreamReader(fstream)); try { DecKey = brKey.readLine(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } }catch(java.io.FileNotFoundException e){ System.out.println("Key file could not be found."); } String decKey = DES.convertStringToHex(DecKey); byte[] cipherByte = DES.parseBytes(Cipher); byte[] keyByte = DES.parseBytes(decKey); String decryptResult = DES.hex(DES.decryptCBC(cipherByte, keyByte)); String temp = decryptResult.replace(" ", ""); String finalDecrypt = temp.substring(0, (temp.length() - DES.getConcatCount())); String finResult = DES.convertHexToString(finalDecrypt); TextView FinalResult = (TextView)findViewById(R.id.decryptText); FinalResult.setText(finResult); } } </code></pre>
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    1. COI got what you means, thank you!
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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