我正在使用Blackberry Cascades 10 Beta 3 SDK和C ++ QT&使用Blackberry 10 Dev Alpha Simulator和QNX Momentics IDE的QML,我正在尝试实现点击带有来自QML的电话号码的按钮的能力,并让它打开一个带有该号码的拨号盘,此时用户应该可以按通话,它会拨打该号码。以下是我所做的事情:
Button {
text: "555-555-5555" //just a sample number - I don't actually use this number
onClicked: Foo.phone(text) //I don't actually use the class name Foo
}
我有: ...
class Foo : public QObject {
Q_OBJECT
public:
...
Q_INVOKABLE void phone(QString number);
}
...
我有:
void Foo::phone(QString number) {
bb::system::phone::Phone phone;
phone.requestDialpad(number, bb::system::phone::LineType::Cellular);
}
但是当我点击按钮时它没有做任何事情 - 我需要拨号盘出现 - 有没有人知道我做错了什么?
答案 0 :(得分:2)
将类Foo的代码更改为以下内容:
Foo.hpp
#ifndef FOO_HPP_
#define FOO_HPP_
#include <QObject>
#include <bb/system/InvokeManager>
class Foo : public QObject {
Q_OBJECT
public:
Foo();
virtual ~Foo();
Q_INVOKABLE void callNumber(const QString& number);
private Q_SLOTS:
void processInvokeReply(); // This slot handles the result of an invocation
private:
bb::system::InvokeManager* _invokeManager;
Q_DISABLE_COPY(Foo);
};
#endif /* FOO_HPP_ */
Foo.cpp中:
#include <bb/system/InvokeAction>
#include <bb/system/InvokeReply>
#include <bb/system/InvokeTargetReply>
#include <bb/system/InvokeRequest>
#include <bb/PpsObject>
#include "Foo.hpp"
Foo::Foo() :
_invokeManager(new InvokeManager(this)) {
}
Foo::~Foo() {
}
void Foo::processInvokeReply() {
InvokeReply *reply = qobject_cast<InvokeReply*>(sender()); // Get the reply from the sender object
// Check for errors during invocation
switch (reply->error()) {
case InvokeReplyError::BadRequest:
qDebug("[ErrorBadRequest] Invoke Failed!");
break;
case InvokeReplyError::Internal:
qDebug("[ErrorInternal] Invoke Failed!");
break;
case InvokeReplyError::NoTarget:
qDebug("[ErrorNoTarget] Invoke Failed!");
break;
case InvokeReplyError::TargetNotOwned:
qDebug("[ErrorTargetNotOwned] Invoke Failed.");
break;
default:
qDebug("[Odd Error %d] Invoke failed", reply->error());
break;
}
reply->deleteLater(); // Delete the reply later on
}
void Foo::callNumber(const QString& number) {
QVariantMap map;
map.insert("number", number); // required
QByteArray requestData = bb::PpsObject::encode(map, NULL);
InvokeRequest request;
request.setAction("bb.action.DIAL");
request.setData(requestData);
request.setMimeType("application/vnd.blackberry.phone.startcall");
const InvokeTargetReply *reply = _invokeManager->invoke(request);
if (reply) {
QObject::connect(reply, SIGNAL(finished()), this, SLOT(processInvokeReply()));
} else {
qWarning() << "Invoke Failed! InvokeReply is empty.";
}
}
通过启动应用的初始化cpp代码公开它:
Foo* _foo = new Foo();
qml->setContextProperty("_foo", _foo);
然后在QML中使用它:
Button {
onClicked: {
_foo.callNumber("555-555-5555")
}
}
<强>增加:强>
此外,还有一种更简单的方法:
在main.cpp中:
#include <bb/system/phone/Phone>
#include <bb/data/DataSource>
// skipped ...
Q_DECL_EXPORT int main(int argc, char **argv)
{
// ...skipped
qmlRegisterType<bb::system::phone::Phone>("bb.system.phone", 1, 0, "Phone");
bb::data::DataSource::registerQmlTypes();
// ...skipped
}
然后在QML文件中:
import bb.cascades 1.0
import bb.system.phone 1.0
// Creates one page with a button. When you tap the button,
// a dial pad with a specific phone number is displayed.
Page {
Container {
layout: DockLayout {
}
verticalAlignment: VerticalAlignment.Center
horizontalAlignment: HorizontalAlignment.Center
Button {
id: callButton
text: "Call me, maybe"
onClicked: {
phone.requestDialpad("(519) 555-0100")
}
}
}
attachedObjects: [
Phone {
id: phone
}
]
}
在此处详细了解此示例 - http://developer.blackberry.com/cascades/documentation/device_comm/phone/index.html