How to access QML object to display the error message.

Hi all

I have a request. I got a login screen ("asset:///qml/screenLogin.qml"). "Connect" OB button I click sendt asks the server sending the XML data as a response.

After that, I am parsing the XML data by using Connection Manager. Code is below:

/*
 * LoginHandler.cpp
 *
 *  Created on: Jan 15, 2013
 *      Author: Ekansh
 */

/*Parsing the Login Response Structure.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 */

//#include 
#include "loginhandler.hpp"

#include 
#include 
#include 
#include 
#include `
#include 
#include 

namespace bb {
namespace cascades {

LoginHandler::LoginHandler() {
    // TODO Auto-generated constructor stub

}

LoginHandler::~LoginHandler() {
    // TODO Auto-generated destructor stub
}

bool LoginHandler::startDocument() {
    qDebug() << "Start of the document.";
    return true;
}

bool LoginHandler::endDocument() {
    qDebug() << "End of the document.";
    return true;
}

bool LoginHandler::startElement(const QString &namespaceURI,
        const QString &localName, const QString &qName,
        const QXmlAttributes &atts) {
    qDebug() << "Start of element" << qName;
    for (int i = 0; i < atts.length(); ++i)
        qDebug() << "  " << atts.qName(i) << "=" << atts.value(i);

    return true;
}

bool LoginHandler::endElement(const QString &namespaceURI,
        const QString &localName, const QString &qName) {
    qDebug() << "End of element" << qName;

    if (qName == "sessionid") {
        sessionid = tagValue;
        qDebug() << "sessionid:: " << sessionid;
    } else if (qName == "error") {
        error = tagValue;
        qDebug() << "error:: " << error;

        /*QmlDocument *qml = QmlDocument::create("asset:///qml/screenLogin.qml");
        //Container *root = qml->createRootObject();
        AbstractPane *root = qml->createRootObject();
        QObject *newLabel = root->findChild("errorObject");

        if (newLabel)
            newLabel->setProperty("text", "error");*/

    }
    return true;
}

bool LoginHandler::fatalError(const QXmlParseException & exception) {
    qWarning()
            << QString("Fatal error on line %1, column %2: %3").arg(
                    exception.lineNumber()).arg(exception.columnNumber()).arg(
                    exception.message());

    return false;
}

bool LoginHandler::characters(const QString &str) {
    qDebug() << "Characters" << str;
    tagValue = str;
    return true;
}
} /* namespace cascades */
} /* namespace bb */

When I put the wrong credentials, I want an error message to display on login QML.

See the code in the EndElement this handler method.

But I am not able set the error message when the connection QML.

Help, please.

You can set the label with the message as below. Condition that you specified label with the same "errorLbl" objectname qml

QObject *lblError = bb::cascades::Application::instance()->findChild("errorLbl");
    if (lblError)
        lblError->setProperty("text", "error");

-Dishooom

I hope this helps...

Tags: BlackBerry Developers

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