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Thread: Blackberry error

  1. #1
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    Default Blackberry error

    I was trying to POST a URL to the server but it gives an exception (no NullPointer caught), but the same application works on other mobile perfectly...please, is there any thing I have to do on the application to make it work on the Blackberry?


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Blackberry error

    Look at the code and see why there is NullPointerException. Fix that code so that it works on the device.

  3. #3
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    Default Re: Blackberry error

    this is the method performing the work...its actually giving this kind of error: error 104 No NullPointerException Caught.

    private boolean login = false;
    private String response = null;

    private void login() throws IOException, InterruptedException {

    HttpConnection hc = null;
    InputStream input = null;
    //OutputStream output = null;
    try
    {
    String url = "http://www.mantraa360.com/sefex/payment.php/?vin=" + vinTextField.getString() + "&pin="
    + pinTextField.getString();

    //connect to server
    hc = ( HttpConnection )Connector.open( url );
    hc.setRequestMethod( HttpConnection.GET );

    //Authentication
    if ( hc.getResponseCode() == HttpConnection.HTTP_OK )
    {
    login = true;
    }//end if
    // if ( !login )
    // {
    // getFailureAlert().setString( "Error..File Not Found" );
    // failureAlert.setTimeout(Alert.FOREVER);
    // switchDisplayable( failureAlert, sefexLoginForm );
    // vinTextField.setString("");
    // pinTextField.setString("");
    // System.out.println( "Invalid" );
    // }

    input = hc.openInputStream();
    int length = (int)hc.getLength();
    byte[] data = new byte[ length ];

    if ( input != null )
    {
    input.read( data, 0, length );
    response = new String(data, 0, length);
    System.out.println(response);


    /* if ( response.startsWith( "P" ) )
    {
    getSefexRespStringItem().setText( response );
    }//end inner if(response.startsWith("P"))

    else if ( response.startsWith( "I" ) )
    {
    getSefexRespStringItem().setText( response );
    }//end inner if(response.startsWith("I"))
    :
    else
    sefexRespStringItem.setText( response );
    }//end if(input != null)
    */
    }
    else
    return;

    input.close();
    hc.close();

    if ( response.trim().equals( "0" ) )
    {
    response = "Successfully Credited \n Account No : "+vinTextField.getString();
    System.out.println(response);
    }//end if
    }//end try
    finally
    {
    if ( input != null )
    input.close();
    if ( hc != null )
    hc.close();
    }//end finally

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: Blackberry error

    its actually giving this kind of error:
    What is the its you are talking about? I don't recognize the text of the error message

    What variable is null? Why is it null?

    Please wrap your posted code in code tags. See:http://www.java-forums.org/misc.php?do=bbcode#code
    or Go Advanced and use the # icon

  5. #5
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    Default Re: Blackberry error

    actually, i ran an application on another emulator and a Nokia phone..the application worked perfectly..the application is to POST a url to the server and then get a response....i got my response correctly but when i ran it on the BlackBerry simulator and the mobile itself..it was giving errors....: "App Error 104 Uncaught: NullPointerException Scroll for available commands", that was the error been displayed on the screen..

  6. #6
    Super Moderator Norm's Avatar
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    Default Re: Blackberry error

    No ideas on how to debug code on an emulator, simulator or phone.

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