Qt QML启动屏幕不工作

Qt QML启动屏幕不工作,qt,splash-screen,qml,Qt,Splash Screen,Qml,我的应用程序在最新的belle更新之前就可以运行了,但现在不行了。仅当我将init.qml文件和splashscreen.qml文件的com.nokia.symbian 1.1降级为1.0时,启动屏幕才起作用,但随后不显示main.qml文件。当我指示main.cpp直接加载main.qml时,应用程序确实可以工作…。我迷路了!以下是main.cpp的代码: #include <QtGui/QApplication> #include "qmlapplicationvie

我的应用程序在最新的belle更新之前就可以运行了,但现在不行了。仅当我将init.qml文件和splashscreen.qml文件的com.nokia.symbian 1.1降级为1.0时,启动屏幕才起作用,但随后不显示main.qml文件。当我指示main.cpp直接加载main.qml时,应用程序确实可以工作…。我迷路了!以下是main.cpp的代码:

   #include <QtGui/QApplication>
   #include "qmlapplicationviewer.h"

   Q_DECL_EXPORT int main(int argc, char *argv[])
   {
QScopedPointer<QApplication> app(createApplication(argc, argv));

QmlApplicationViewer viewer;
viewer.setOrientation(QmlApplicationViewer::ScreenOrientationLockPortrait);
viewer.setSource(QUrl("qrc:/qml/SmartFlyer/init.qml"));
//viewer.setMainQmlFile(QLatin1String("qrc:qml/SmartFlyer/main.qml"));
viewer.showExpanded();

return app->exec();
   }
对于splashscreen.qml:

   import QtQuick 1.1
   import com.nokia.symbian 1.1

   Rectangle {
       id: splash

       anchors.fill: parent
       color: "black"

property int minTimeout: 3000  // 3s by default.
property string image;            // path to splash image
property bool show: false       // if show is true then image opacity is 1.0, else 0.0

property bool canFinish: false    // if true then we can hide spash after timeout

state: show ? "showingSplash" : ""

onStateChanged: {
    if( state == "showingSplash" )
        splashTimer.start();
}

opacity: 0.0

Image {
    source: image
    fillMode: Image.PreserveAspectFit
    anchors.fill: parent
    smooth: true
}

Timer {
    id: splashTimer
    interval: minTimeout
    running: false
    repeat:  true
    onTriggered: {
        if( splash.canFinish )
        {
            // finally we can stop timer and hide splash
            splash.show = false
            splashTimer.repeat = false
        }
        else
        {
            // canFinish is false, but main.qml is not loaded yet
            // we should run timer again and again
            splashTimer.interval = 1000 // 1 sec
            splashTimer.repeat = true
        }
    }
}

states: [
    State {
        name: "showingSplash"
        PropertyChanges { target: splash;  opacity: 1.0 }
    }
]

// hide splash using animation
transitions: [
    Transition {
        from: ""; to: "showingSplash"
        reversible: true
        PropertyAnimation { property: "opacity";  duration: 500; }
    }
]
   }
至于我,我用一种“老派”的方式来显示Splash,没有任何QML。在这里,您可以看到如何在渐变背景上放置图像徽标:

QSplashScreen *Application::buildSplashScreen() {
    const QPixmap logoPixmap(":/images/logo.png");
    QDesktopWidget *desktop = QApplication::desktop();
    QRect desktopRect = desktop->availableGeometry();
    QPixmap splashPixmap(desktopRect.width(), desktopRect.height());
    QPainter painter;
    painter.begin(&splashPixmap);
    QLinearGradient backgroundGradient(splashPixmap.rect().width() / 2,
                                       0,
                                       splashPixmap.rect().width() / 2,
                                       splashPixmap.rect().height());
    backgroundGradient.setColorAt(0, QColor::fromRgb(40, 50, 57));
    backgroundGradient.setColorAt(1, QColor::fromRgb(19, 25, 29));
    painter.fillRect(splashPixmap.rect(), backgroundGradient);
    QRect logoRect((splashPixmap.width() - logoPixmap.width()) / 2,
                   (splashPixmap.height() - logoPixmap.height()) / 2,
                   logoPixmap.width(),
                   logoPixmap.height());
    painter.drawPixmap(logoRect, logoPixmap);
    painter.end();
    QScopedPointer<QSplashScreen> splashScreen(new QSplashScreen(splashPixmap));
    if (desktopRect.width() > desktopRect.height()) {
        splashScreen->setAttribute(Qt::WA_LockLandscapeOrientation, true);
    } else {
        splashScreen->setAttribute(Qt::WA_LockPortraitOrientation, true);
    }
    return splashScreen.take();
}
qsplashsscreen*应用程序::buildSplashScreen(){
const QPixmap logoPixmap(“:/images/logo.png”);
QDesktopWidget*desktop=QApplication::desktop();
QRect desktopRect=desktop->availableGeometry();
QPixmap splashPixmap(desktopRect.width(),desktopRect.height());
油漆工;
绘制。开始(&splashPixmap);
QlineArgent背景渐变(splashPixmap.rect().width()/2,
0,
splashPixmap.rect().width()/2,
splashPixmap.rect().height();
背景梯度:setColorAt(0,QColor::fromRgb(40,50,57));
背景梯度:setColorAt(1,QColor::fromRgb(19,25,29));
painter.fillRect(splashPixmap.rect(),backgroundGradient);
QRect logoRect((splashPixmap.width()-logoPixmap.width())/2,
(splashPixmap.height()-logoPixmap.height())/2,
logoPixmap.width(),
logoPixmap.height());
painter.drawPixmap(logoRect,logoPixmap);
结束();
QScopedPointer splashScreen(新QSplashScreen(splashPixmap));
if(desktopRect.width()>desktopRect.height()){
splashScreen->setAttribute(Qt::WA_LockLandscapeOrientation,true);
}否则{
splashScreen->setAttribute(Qt::WA_方向,真);
}
返回splashScreen.take();
}
然后,我在程序启动时使用手动构建的飞溅:

int Application::run() {
    QScopedPointer<QSplashScreen> splashScreen(buildSplashScreen());
    splashScreen->showFullScreen();
    QScopedPointer<QDeclarativeView> applicationWindow(buildRootView());
    splashScreen->finish(applicationWindow.data());
    applicationWindow->showFullScreen();
    return QApplication::exec();
}
int应用程序::run(){
QScopedPointer splashScreen(buildSplashScreen());
splashScreen->showFullScreen();
QScopedPointer应用程序窗口(buildRootView());
splashScreen->finish(applicationWindow.data());
应用程序窗口->显示全屏();
返回QApplication::exec();
}
int Application::run() {
    QScopedPointer<QSplashScreen> splashScreen(buildSplashScreen());
    splashScreen->showFullScreen();
    QScopedPointer<QDeclarativeView> applicationWindow(buildRootView());
    splashScreen->finish(applicationWindow.data());
    applicationWindow->showFullScreen();
    return QApplication::exec();
}