Blackberry10级联qmlRegisterType无法注册对象

Question

这是我注册计时器的方式：

qmlRegisterType<QTimer>("bb.Timer", 1, 0, "QTimer");

这就是我使用它的方式：

import bb.Timer 1.0; //error Unknown library 'bb.Timer'

Page {
    Container {

        Button {
            id: playButton
            text: "Play"
            horizontalAlignment: HorizontalAlignment.Center
            onClicked: {                   
                    player.play();
            }
            attachedObjects: [
                QTimer  { //error The QTimer component might be an unknown or //custom component. Its properties are not validated.
                    id: mTimer
                    interval: 2000
                    onTimeout: {
                        playButton.text = "new page"                       
                    }
                }
            ]
        }