android - 在不调用 Dismiss 的情况下关闭警报对话框

Question

在我的程序中，我正在为一个空编辑文本显示 Toast，该编辑文本在我的对话框中以及上传按钮，现在谈谈我的程序和问题

喜欢:

1. PersonName字段不能留空

2. 如果 PersonName 字段 为空，则显示 Toast(每当用户在警告对话框

中 点击“上传”按钮)

3. 如果不调用dismiss，它会关闭我的 AlertDialog

在我的 AlertDialog 中，我有大约 4 个 EditTexts、3 个按钮 和一些其他小部件。 p>

UploadActivity.java:-

private boolean SaveData() {                        

 final AlertDialog.Builder ad = new AlertDialog.Builder(UploadActivity.this);                    
  ad.setTitle("StreamReader");                        
  ad.setIcon(android.R.drawable.btn_star_big_on);
  ad.setPositiveButton("Close", null);      
  if(editPersonName.getText().length() == 0)
  {
  Toast.makeText(getApplicationContext(), "Person Name field cannot be left blank", Toast.LENGTH_LONG).show();
  return false ;
  }
  String 
  url = "http://domain.tld/sendData.jsp";       
  List<NameValuePair> params = new ArrayList<NameValuePair>();
  params.add(new BasicNameValuePair("sImageName", editImageName.getText().toString()));

  String resultServer  = getHttpPost(url,params);
  Log.d("Entire string::", " " + resultServer);
  /*** Default Value ***/
  String strStatusID = "0";
  String strError = "Data Stored to Server";
  JSONObject c;
  try {
    c = new JSONObject(resultServer);
    strStatusID = c.getString("StatusID");
    strError = c.getString("Message");
       } catch (JSONException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
     }
    // prepare save data
    if(strStatusID.equals("0"))
    {
      Toast.makeText(getApplicationContext(), strError.toString(), Toast.LENGTH_LONG).show();
    }
    else
    {
    Toast.makeText(getApplicationContext(), "Data Uploaded Successfully!", Toast.LENGTH_LONG).show();                           
    }
     return true;
    }

Answer 1

在调用 SaveData 方法之前验证您的编辑文本。并从 SaveData 中删除验证码:

所以像这样处理点击事件:

uploadButton.setOnClickListener(new View.OnClickListener(){
            @Override
                    public void onClick(View v) {

                if(editPersonName.getText().length() == 0)
              {
                  Toast.makeText(getApplicationContext(), "Person Name field cannot be left blank", Toast.LENGTH_LONG).show();

              }
                else
                {
                    SaveData();
                }
            }

现在您的 SaveData 将如下所示:

private void SaveData() {    

      String
      url = "http://domain.tld/sendData.jsp";      
      List<NameValuePair> params = new ArrayList<NameValuePair>();
      params.add(new BasicNameValuePair("sImageName", editImageName.getText().toString()));

      String resultServer  = getHttpPost(url,params);
      Log.d("Entire string::", " " + resultServer);
      /*** Default Value ***/
      String strStatusID = "0";
      String strError = "Data Stored to Server";
      JSONObject c;
      try {
            c = new JSONObject(resultServer);
            strStatusID = c.getString("StatusID");
           strError = c.getString("Message");
       } catch (JSONException e) {
       // TODO Auto-generated catch block
          e.printStackTrace();
       }

      // prepare save data
      if(strStatusID.equals("0"))
        {
             Toast.makeText(getApplicationContext(), strError.toString(),   Toast.LENGTH_LONG).show();
       }
        else
        {
              Toast.makeText(getApplicationContext(), "Data Uploaded Successfully!", Toast.LENGTH_LONG).show();                          
        }
   }