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dlucic

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Everything posted by dlucic

  1. dlucic
    I have a problem with my DataSnap client application on Android 11 OS. Not every time but from time to time and on different places in my code. Sometimes I recive this message When i click Break debuger points on this line in code What can be a problem
  2. dlucic

    Datasnap param problem

    dlucic replied to dlucic's topic in Network, Cloud and Web

    Any solution?
  3. dlucic

    Datasnap param problem

    dlucic replied to dlucic's topic in Network, Cloud and Web

    I made a simple test application as you tell me but I never get error as one in my application. New app has all the client data sets as my original application When I click on button List param my test app fill Listbox with all params from the CDS selected by Radiobuttons. Then I select one of params and click on the other button Test param. This is onClick method code I never get error as I get in my original application
  4. dlucic

    Project raised exception class 10

    dlucic posted a topic in FMX

    I am developing an android application on Delphi 12. My application connects to a DataSnap server. Some times, but not every time, my application throws this exception. Once when the application starts, the second time when a new form is opened and sometimes everything works without error I suppose everything crashes on line 312 in this module Those any one know the reason of this?
  5. dlucic
    I have simple DataSnap server application with connection to MS SQL Server and also simple client application. On the server side I have TFDConnection object to connect to MS SQL Server. I also have TFDQuery with simple sql "insert into slika_test (slika) values (:slika)". Param slika is for image datatype in table test_slika. This is properties of Param slika of TFDQuery object Of course, there is DataSetProvider object On the client side I have TSQLConnection and DSProviderConnection object's. I connect to DataSnap server application with them. There is also TClientDataSet object This is code for click on Button I load image from Image1 object on the form into MemoryStream. Than I put that MemoryStream in Param of ClientDataSet object and execute. When I do that for the first time everything goes well. Data is stored in MS SQL table. But when I click it another time and same code executes I receive this error on the server application Any body knows what is the problem?
  6. dlucic
    Thank you, it works fine now.
  7. dlucic
    Thanks again. If you wish I can send you compleate code for both applications. That is small peace of code for each of them. But you need a small MS SQL Database with one table with just to columns
  8. dlucic
    Thank you bu that is not my problem. I changed code as you tell me but I still have this massage
  9. dlucic
    I have a problem when my andoroid device lost wifi and connection broke. I can not reestablished that in ordinary maner. My andorid application have TSQLConnection object that connects to DataSnap server application. Everything works fine until I issue network problem. When wifi temporarly lost connection TSQLConnection also lost connection and I get Socket error #103 when I try to open TClientDataSet and that is OK. When I try it once again it works fine. I supose my application successfuly reconnect and open the query. But when I tryed it for the third time I have Socket error # 104. And again. Once OK another time Socket error #104. There is no problems when wifi connection is stable. What should I do?
  10. dlucic
    That's exactly what I tried, buti it heppens exactly as I wrote. This is code on my login form. I have procedure KonektujSe where I connect to DataSnap server service and it works fine. Than I have some code in onClick method with try except. When error occures I call KonektujSe procedure again but it doesn't work.
  11. dlucic
    Thank you but you did not understand me. I mada both server DataSnap service and client Android application. Datasnap service has connection to MS SQL Server. This is objects that I used on server side service application : On the other side, I have android application that connect's to my DataSnap server service through TSQLConnection and TDSProviderConnection. And everything works fine until I lost my wifi connection in a second. I am trying to find way to recover my android application without restarting it. So, my android appllication works fine and when wifi connection broke for a second I receive Socket error #103 when I try to open one of mine TClientDataSet's. If I try it one more time it works fine again. But when I try it for the third time I receive Socket error #104. And that goes in a round (good response, Socket error #104, good response, Socket error #104...) until I restarted my application.
  12. dlucic
    I created a Datasnap server application that connects to the MSSQL database via the TFDConnection object, and then executes a specific SQL query via the TFDQuery object, the results of which are further forwarded via the TDataSnapProvider object. This is screenshot of that application I created a simple client application that opens this query and displays the results in a ListBox. This is the code : When I run application on Windows I get a correct result with Serbian letters as you can see in the image below But when U start the same application on Android, I have a problem with display of Serbian letters. What is the problem? Thanks
  13. dlucic
    Thank you so much
  14. dlucic
    Can you help me please. I dont know how and where to do that
  15. dlucic
    You are right. What can I do now?
  16. dlucic
    I have created a simple datasnap server application Then I created a client application that connects to the server and performs some simple operation that returns certain data that I display in the TMemo component. When I start the client application from one computer, everything works as it should, but on the other it fails to open the connection and reports : Invalid parameter. What could be the problem, and I don't think it's FireWall since I can connect via Telnet
  17. dlucic

    DataSnap connection problem

    dlucic replied to dlucic's topic in Network, Cloud and Web

    Thank you That resolve my problem on Windows machine. But I still have problem on Android. MidasLib must be exscluded from uses when I build app for Android. When I click on button application froze and stop working
  18. dlucic
    Can I connect to MSSQL Server with FireDAC on android application? When I try it there is a problem Is there any eay for direct connection from my android application to MSSQL Server
  19. dlucic
    OK. I know that about REST API, but I would like to try a direct connection if possible. Why is that a bad idea? Thank you
  20. dlucic
    Hello everyone, I just installed Delphi 12.1 and try to run simple (blank) android application on Phone with Android 11. I suppose that all configuration about SDK is correct because my device is in the target list as you can see on picture bellow It seems that I have some problem with the configuration and version of JAVA, and I can't figure out what the problem is. When I try to start an application that consists only of an empty form, I get the following messages When I look at the settings in the SDK manager, everything seems fine I tried with various versions of JAVA but I did not make any progress. Can someone please help me and point me to where I am going wrong
  21. dlucic
    That's it. Thank you very much for helping me
  22. dlucic
    Thank you so much. Now, I have another problem. Please, can you halp me to resolve this
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