这是我在这个论坛上的第一篇文章,刚开始BB 10开发,还有C ++,因为我是一个Java人员。我在QML和C ++集成方面遇到了一些问题
这就是我要做的事情:
我有登录页面,在登录按钮上单击我的新页面(这是一个导航窗格)打开没有任何问题这里是我使用的方法
void Integration:penNextPage() {
printLog("-- open second page (a navigation pane ");
new SecondPageHndlr (appRefrence);
}
以下是我在SecondPageHndlr类中所做的事情:
SecondPageHndlr.cpp
#include "SecondPageHndlr.hpp"
#include "ThirdPageHndlr.hpp"
#include <bb/cascades/Application>
#include <bb/cascades/QmlDocument>
#include <bb/cascades/AbstractPane>
#include <bb/cascades/NavigationPane>
#include <bb/cascades/Page>
#include <bb/cascades/Sheet>
#include <QObject>
#include <QIODevice>
#include <iostream.h>
#include <string.h>
#include <stdio.h>
using namespace bb::cascades;
SecondPageHndlr::SecondPageHndlr(bb::cascades::Application *app)
: QObject(app){
try{
QmlDocument *secondQml = QmlDocument::create("asset:///SecondPage.qml");
if (!secondQml->hasErrors()) {
NavigationPane* page = secondQml->createRootObject<NavigationPane>();
if (page)
{
printLog("second page view . page is not null ");
//make this c++ file accessable from the dashboardviewn.qml
pane = page;
secondQml->setContextProperty("second", this );
app->setScene(page);
}
else
printLog("page is null ");
}
else
printLog("Error in second page view QML");
}
catch (std::exception& e)
{
printLog("-------- Exception");
std::cout << "Exception: " << e.what();
}
}
void SecondPageHndlr::showThirdScreen(){
printLog("-- open Third page (a navigation pane pushes a new page");
new ThirdPageHndlr (pane);
}
void SecondPageHndlr::printLog(const char *str){
cout <<"\n" << str ;
printf("" ,1);
fflush(stdout);
}
现在,当我从第二个屏幕开始尝试打开第三个页面时,它根本无法正常工作,请查看代码并告诉我他们做错了什么
答案 0 :(得分:0)
您已经在使用导航窗格,因此打开任何其他页面都没有问题。请参阅以下qml代码
import bb.cascades 1.0
NavigationPane {
id: navigationPane
Page {
// page with a picture thumbnail
Container {
background: Color.Gray
layout: DockLayout {
}
Button {
horizontalAlignment: HorizontalAlignment.Center
verticalAlignment: VerticalAlignment.Center
text: qsTr("Show detail")
onClicked: {
// show detail page when the button is clicked
var page = secondPageDefinition.createObject();
console.debug("pushing detail " + page)
navigationPane.push(page);
}
attachedObjects: [
ComponentDefinition {
id: secondPageDefinition
source: "DetailsPage.qml"
}
]
}
}
}
}
DetailsPage.qml
Page{
Label{
text: qsTr("Second Page")
}
}