模拟时钟小部件javafx中的问题

Question

    Calendar time = GregorianCalendar.getInstance();
    double second = time.get(Calendar.SECOND);
    double minute = time.get(Calendar.MINUTE);
    double hour   = time.get(Calendar.HOUR);
    double secondStartPos = 6*second;
    double minuteStartPos = 6*minute;
    double hourStartPos   = 30*hour + (0.5*minuteStartPos);

    //Define rotations
    Rotate secondRotate = new Rotate(secondStartPos, 150, 150);
    Rotate minuteRotate = new Rotate(minuteStartPos, 150, 150);
    Rotate hourRotate = new Rotate(  hourStartPos, 150, 150);
    secondHand.getTransforms().add(secondRotate);
    minuteHand.getTransforms().add(minuteRotate);
    hourHand.getTransforms().add(hourRotate);


    //Time line for second
    Timeline secondTime = new Timeline(
    *        new KeyFrame(
             Duration.seconds(60),
    **       new KeyValue(
             secondRotate.angleProperty(),
             360 + secondStartPos ,
             Interpolator.LINEAR
             )
             )
             );

*未定义构造函数关键帧（Duration,KeyValue）

**构造函数键值（DoubleProperty,double,Interpolator）未定义

我看了API文档

Answer 1

您没有导入正确的类：

import javafx.animation.KeyValue;

您可能正在从JDK中导入其他一些KeyValue类（例如com.sun.org.apache.xml.internal.security.keys.content.KeyValue）。

您的实现所基于的代码有一个更新的、质量更高的版本。