谁能告诉我怎样把对话框的数据保存成字符串吗。我创建了一个二维码扫描应用程序中，我想存储的数据扫描二维码。我尝试了以下代码，但显示了一个错误时，试图从对话框中获取数据的字符串。此行出错字符串user_data=data.gettext（）.tostring（）；在gettext（）处。请告诉我如何解决这个错误。

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
   IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
   if (result!=null && result.getContents()!=null){

       new AlertDialog.Builder(all_Entries.this)
               .setTitle("Customer Information")
               .setMessage(result.getContents())
               //Save Button
               .setPositiveButton("Save", new DialogInterface.OnClickListener() {
                   @Override
                   public void onClick(DialogInterface dialog, int which) {
                        addDataToDatabase();
                   }
                   private void addDataToDatabase() {

                       String  user_data = data.getText().toString();
                       // Here getText() Function is not working Showing an Error :**Cannot resolve method 'getText' in 'Intent'**

                       UserData userData = new UserData(user_data);
                       repository = new MyRepository(MyDatabase.getInstance(getApplicationContext()).myDao());
                       repository.addUser(userData);
                       Toast.makeText(all_Entries.this, "Data is Saved", Toast.LENGTH_SHORT).show();
                   }
               })

               //Save Button End

               .setNegativeButton("Cancle", new DialogInterface.OnClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int which) {
               dialog.dismiss();
           }
       }).create().show();
   }
    super.onActivityResult(requestCode, resultCode, data);
}