BlackBerry Q10 timer does not work for a project of 10 Q Lable in Blackberry

Hi all

I'm just a new Black Berry Q 10 and just beginner. I get some helpful solutions here to correct my mistakes. I am very grateful for this site and its members.

In my application, I would like to add a timer to a lable. for every second, I want to Christophe Lable value. Here is my code Qml and timer.

// Default empty project template
import bb.cascades 1.0
import CustomTimer 1.0
// creates one page with a label
Page {
    Container {
        id:root
        layout: DockLayout {}
        property int f: 10
        Label {
            id: timerLabel
            text: qsTr("Hello World")
            textStyle.base: SystemDefaults.TextStyles.BigText
            verticalAlignment: VerticalAlignment.Center
            horizontalAlignment: HorizontalAlignment.Center

        }
        Timer {
            id: lightTimer
            // Specify a timeout interval of 1 second
            interval: 1000
            onTimeout: {
                root.f -= 1;
                timerLabel.text = "Timer:"+root.f;
                lightTimer.start();
                if(root.f<0){
                    lightTimer.stop();
                }
                } // end of onTimeout signal handler
        } // end of Timer

    }
}

#include 
#include "timer.hpp"

Timer::Timer(QObject* parent)
     : bb::cascades::CustomControl(),
     _timer(new QTimer(this))
{
    Q_UNUSED(parent);
    connect(_timer, SIGNAL(timeout()), this, SIGNAL(timeout()));
    setVisible(false);
}

bool Timer::isActive()
{
    return _timer->isActive();
}

int Timer::interval()
{
    return _timer->interval();
}

void Timer::setInterval(int m_sec)
{
    // If the timer already has the specified interval, do nothing
    if (_timer->interval() == m_sec)
        return;

    // Otherwise, set the interval of the timer and emit the
    // intervalChanged() signal
    _timer->setInterval(m_sec);
    emit intervalChanged();
}

void Timer::start()
{
    // If the timer has already been started, do nothing
    if (_timer->isActive())
        return;

    // Otherwise, start the timer and emit the activeChanged()
    // signal
    _timer->start();
    emit activeChanged();
}

void Timer::stop()
{
    // If the timer has already been stopped, do nothing
    if (!_timer->isActive())
        return;

    // Otherwise, stop the timer and emit the activeChanged()
    // signal
    _timer->stop();
    emit activeChanged();
}

#ifndef TIMER_HPP_
#define TIMER_HPP_

#include 
#include 

class QTimer;

class Timer : public bb::cascades::CustomControl
{
    Q_OBJECT

    Q_PROPERTY(bool active READ isActive NOTIFY activeChanged)
    Q_PROPERTY(int interval READ interval WRITE setInterval
               NOTIFY intervalChanged)

public:
    explicit Timer(QObject* parent = 0);

    bool isActive();
    void setInterval(int m_sec);
    int interval();

public

slots:
    void start();
    void stop();

signals:
    void timeout();
    void intervalChanged();
    void activeChanged();

private:
    QTimer* _timer;
};

#endif /* TIMER_HPP_ */

and I sign up time as follws custome...

Registering the custome timer
qmlRegisterType("CustomTimer", 1, 0, "Timer");
    // create scene document from main.qml asset
    // set parent to created document to ensure it exists for the whole application lifetime
    QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);

where I'm wrong... I'm just Hello world but Timer shows no lable value. Please help me!

Hello

It was my mistake in looking at timer in Qml. The good way to start is given below.

Already... .i was

  Timer {
            id: lightTimer
            // Specify a timeout interval of 1 second
            interval: 1000
            onTimeout: {
                root.f -= 1;
                timerLabel.text = "Timer:"+root.f;
                lightTimer.start();
                if(root.f<0){
                    lightTimer.stop();
                }
               } // end of onTimeout signal handler
        } // end of Timer

but now to hide a bad start timer and start in the right way

Timer {
            id: lightTimer
            // Specify a timeout interval of 1 second
            interval: 1000
            onTimeout: {
                root.f -= 1;
                timerLabel.text = "Timer:"+root.f;
//                lightTimer.start();
//                if(root.f<0){
//                    lightTimer.stop();
//                }
               } // end of onTimeout signal handler
        } // end of Timer

    }
    onCreationCompleted: {
        lightTimer.start();
    }

Thank you!!!

Tags: BlackBerry Smartphones

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