Java GWT openlayers，DrawFeature线条样式

我正在使用gwt openlayers在地图上绘制一些线条。我想更改绘制要素线的外观。我注意到PathHandler类有setStyle方法，但使用此方法设置样式不会更改行外观

private DrawFeature createDrawFeature() {
    DrawFeatureOptions options = new DrawFeatureOptions();
    options.onFeatureAdded(getStyle());
    PathHandler handler = new PathHandler();
    handler.setStyle(style);
    return new DrawFeature(layer, handler, options );
}
private Style getStyle() {
    Style style = new Style();
    style.setStrokeColor("#ffffff");
    style.setStrokeWidth(2.0);
    return style;
}

我试图设置不同的样式选项，但没有效果。

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有人知道如何更改DrawFeature line的外观吗？

如果草图（完成之前的特征）的样式不同，则绘制（点、路径或多边形）的处理程序负责

因此，要设置草图的样式，请执行以下操作：

    //Create a style. We want a blue dashed line.
    final Style drawStyle = new Style(); //create a Style to use
    drawStyle.setFillColor("white");
    drawStyle.setGraphicName("x");
    drawStyle.setPointRadius(4);
    drawStyle.setStrokeWidth(3);
    drawStyle.setStrokeColor("#66FFFF");
    drawStyle.setStrokeDashstyle("dash");

    //create a StyleMap using the Style
    StyleMap drawStyleMap = new StyleMap(drawStyle);

    //Create PathHanlderOptions using this StyleMap
    PathHandlerOptions phOpt = new PathHandlerOptions();
    phOpt.setStyleMap(drawStyleMap);   

    //Create DrawFeatureOptions and set the PathHandlerOptions (that have the StyleMap, that have the Style we wish)
    DrawFeatureOptions drawFeatureOptions = new DrawFeatureOptions();
    drawFeatureOptions.setHandlerOptions(phOpt);

    PathHandler pathHanlder = new PathHandler();

    // Create the DrawFeature control to draw on the map, and pass the DrawFeatureOptions to control the style of the sketch
    final DrawFeature drawLine = new DrawFeature(vectorLayer, pathHanlder, drawFeatureOptions);
    map.addControl(drawLine);
    drawLine.activate();

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我还在she showcase中添加了一个示例：

谢谢，效果很好，但是最后一行呢（我的意思是画完之后）？它仍然有古老的淡橙色风格。好的，我找到了通过使用onFeatureAdded in drawfeature options public void onFeatureAdded（VectorFeature VectorFeature）{VectorFeature.setStyle（getStyle（））；VectorFeature.redrawParent（）；}Falcon实现这一点的方法，这可能确实有效，但有点过分。您应该在vectorlayer上使用setStyle或setStyleMap方法。这样，只需在图层上设置一次样式。类似矢量层=新矢量（“矢量层”）；最终样式drawStyle=新样式（）//创建一个样式以使用drawStyle.setFillColor（“白色”）；drawStyle.setGraphicName（“x”）；drawStyle.设定点半径（4）；拉深方式。设定行程宽度（3）；drawStyle.setStrokeColor（“#66FFFF”）；drawStyle.SetStrokedDashStyle（“短划线”）；矢量图层设置样式（drawStyle）；