que muestra la barra de progreso en el cuadro de diálogo de alerta

Question

Tengo un cuadro de diálogo de alerta en mi aplicación para autenticación de inicio de sesión. Al enviar la solicitud quiero mostrar una barra de progreso y quiero descartar si la respuesta es success.please me ayude si alguien knows.Iam con el siguiente código:

final AlertDialog.Builder alert = new AlertDialog.Builder(this); 
LinearLayout login = new LinearLayout(this); 
TextView tvUserName = new TextView(this); 
TextView tvPassword = new TextView(this); 
TextView tvURL = new TextView(this); 
final EditText etUserName = new EditText(this); 
final EditText etPassword = new EditText(this); 
final EditText etURL = new EditText(this); 
login.setOrientation(1); // 1 is for vertical orientation 
tvUserName.setText(getResources().getString(R.string.username)); 
tvPassword.setText(getResources().getString(R.string.password)); 
tvURL.setText("SiteURL"); 
login.addView(tvURL); 
login.addView(etURL); 
login.addView(tvUserName); 
login.addView(etUserName); 
login.addView(tvPassword); 
etPassword.setInputType(InputType.TYPE_CLASS_TEXT 
| InputType.TYPE_TEXT_VARIATION_PASSWORD); 
login.addView(etPassword); 
alert.setView(login); 
alert.setTitle(getResources().getString(R.string.login)); 
alert.setCancelable(true); 
alert.setPositiveButton(getResources().getString(R.string.login), 
new DialogInterface.OnClickListener() { 
    public void onClick(final DialogInterface dialog, 
    int whichButton) { 
     strhwdXml = etURL.getText().toString(); 
     strUserName = etUserName.getText().toString(); 
     XmlUtil.username = strUserName; 
     strPassword = etPassword.getText().toString(); 
     if ((strUserName.length() == 0) 
     && (strPassword.length() == 0) 
     && (strhwdXml.length() == 0)) { 
      Toast.makeText(
      getBaseContext(), 
      getResources().getString(
      R.string.userPassword), 
      Toast.LENGTH_SHORT).show(); 
      onStart(); 
      } else { 
      final SharedPreferences prefs = PreferenceManager 
      .getDefaultSharedPreferences(getApplicationContext()); 
      SharedPreferences.Editor prefsEditor = prefs 
      .edit(); 
      try { 
       StringBuffer inStreamBuf = new StringBuffer(); 
       inStreamBuf = XmlUtil 
       .getLoginAuthResponse(strUserName, 
       strPassword, strhwdXml); 
       strXmlResponse = inStreamBuf.toString(); 
       Log.e("Response:", strXmlResponse); 
       String parsedXML = ParseResponse(strXmlResponse); 
       if (parsedXML 
       .equalsIgnoreCase(getResources() 
       .getString(R.string.success))) { 
       } 

Answer 1

Podría ser más fácil de usar este

ProgressDialog dialog = ProgressDialog.show(MyActivity.this, "", 
         "Loading. Please wait...", true); 

puede leer más sobre los diálogos de progreso here

Para cancelar habría

dialog.dismiss(); 

Answer 2

Try continuación Código

private class DownloadingProgressTask extends 
     AsyncTask<String, Void, Boolean> { 

    private ProgressDialog dialog = new ProgressDialog(ShowDescription.this); 

    /** progress dialog to show user that the backup is processing. */ 

    /** application context. */ 

    protected void onPreExecute() { 
     this.dialog.setMessage("Please wait"); 
     this.dialog.show(); 
    } 

    protected Boolean doInBackground(final String... args) { 
     try { 
      // write your request code here 


      **StringBuffer inStreamBuf = new StringBuffer(); 
      inStreamBuf = XmlUtil 
      .getLoginAuthResponse(strUserName, 
      strPassword, strhwdXml); 
      strXmlResponse = inStreamBuf.toString(); 
      Log.e("Response:", strXmlResponse); 
      String parsedXML = ParseResponse(strXmlResponse); 
      if (parsedXML 
      .equalsIgnoreCase(getResources() 
      .getString(R.string.success))) {** 

       return true; 
     } catch (Exception e) { 
      Log.e("tag", "error", e); 
      return false; 
     } 
    } 

    @Override 
    protected void onPostExecute(final Boolean success) { 

     if (dialog.isShowing()) { 
      dialog.dismiss(); 
     } 

     if (success) { 
      Toast.makeText(ShowDescription.this, 
        "File successfully downloaded", Toast.LENGTH_LONG) 
        .show(); 
      imgDownload.setVisibility(8); 
     } else { 
      Toast.makeText(ShowDescription.this, "Error", Toast.LENGTH_LONG) 
        .show(); 
     } 
    } 

} 

y llamar a esto en evento onclick

new DownloadingProgressTask().execute(); 

Answer 3

Si desea que la barra de progreso para mostrar, probar los siguientes pasos y también se puede copiar y pegar todo el código de la parte relevante de su código y debería funcionar.

//the first thing you need to to is to initialize the progressDialog Class like this 

final ProgressDialog progressBarDialog= new ProgressDialog(this); 

//set the icon, title and progress style.. 

progressBarDialog.setIcon(R.drawable.ic_launcher); 

progressBarDialog.setTitle("Showing progress..."); 

progressBarDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); 


    //setting the OK Button 
    progressBarDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener(){ 
     public void onClick(DialogInterface dialog, 
       int whichButton){ 
      Toast.makeText(getBaseContext(), 
        "OK clicked!", Toast.LENGTH_SHORT).show(); 
     } 
    }); 

    //set the Cancel button 
    progressBarDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener(){ 
     public void onClick(DialogInterface dialog, int whichButton){ 
      Toast.makeText(getApplicationContext(), "Cancel clicked", Toast.LENGTH_SHORT).show(); 
     } 
    }); 
//initialize the dialog.. 
progressBarDialog.setProgress(0); 

//setup a thread for long running processes 
new Thread(new Runnable(){ 
    public void run(){ 
     for (int i=0; i<=15; i++){ 
      try{ 
       Thread.sleep(1000); 
       progressBarDialog.incrementProgressBy((int)(5)); 
      } 
      catch(InterruptedException e){ 
       e.printStackTrace(); 
      } 
     } 
     //dismiss the dialog 
     progressBarDialog.dismiss(); 
    } 
    }); 

//show the dialog 
progressBarDialog.show(); 

El botón cancelar debe cerrar el cuadro de diálogo.