 Batik中多个SVG元素拖动问题，如何处理闪烁现象？
我用数组记录被点击的SVG数组，在拖动过程中不像单个元素拖动那样自然，会出现闪烁现象，请问又没有人知道如何刷新处理？还有就是在拖动过程中总是出现java.lang.IllegalStateException或者java.lang.NullPointerException
的错误，这个该如何解决？我在拖动过程中使用了数组，应该是数组中有空值，但是有时有，有时没有，请问这该如何处理？
出现空值得错误提示如下：
java.lang.NullPointerException
at org.apache.batik.bridge.PaintServer.convertStroke(PaintServer.java:465)
at org.apache.batik.bridge.PaintServer.convertFillAndStroke(PaintServer.java:150)
at org.apache.batik.bridge.SVGShapeElementBridge.createShapePainter(SVGShapeElementBridge.java:117)
at org.apache.batik.bridge.SVGRectElementBridge.createShapePainter(SVGRectElementBridge.java:153)
at org.apache.batik.bridge.SVGShapeElementBridge.buildGraphicsNode(SVGShapeElementBridge.java:91)
at org.apache.batik.bridge.GVTBuilder.build(GVTBuilder.java:145)
at org.apache.batik.bridge.SVGGElementBridge.handleElementAdded(SVGGElementBridge.java:123)
at org.apache.batik.bridge.SVGGElementBridge.handleDOMNodeInsertedEvent(SVGGElementBridge.java:107)
at org.apache.batik.bridge.BridgeContext$DOMNodeInsertedEventListener.handleEvent(BridgeContext.java:1601)
at org.apache.batik.dom.events.EventSupport.fireEventListeners(EventSupport.java:324)
at org.apache.batik.dom.events.EventSupport.fireEventListeners(EventSupport.java:366)
at org.apache.batik.dom.events.EventSupport.dispatchEvent(EventSupport.java:258)
at org.apache.batik.dom.AbstractNode.dispatchEvent(AbstractNode.java:1014)
at org.apache.batik.dom.AbstractParentNode.fireDOMNodeInsertedEvent(AbstractParentNode.java:422)
at org.apache.batik.dom.AbstractParentNode.appendChild(AbstractParentNode.java:224)
at SVGTest.DrawRectangle(SVGTest.java:1007)
at SVGTest.mouseReleased(SVGTest.java:686)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
|
[返回] 中文XML论坛 - 专业的XML技术讨论区 →
XML.ORG.CN讨论区 - 高级XML应用 → 『 SVG/GML/VRML/X3D/XAML 』 → Batik中多个SVG元素拖动问题，如何处理闪烁现象？
(订阅本版)
2008/12/19 8:59:00
新浪微博
