Lwuit虚拟键盘错误

Question

当我在键盘上单击某些东西时，会出现此错误

java.lang.NullPointerException
    at com.sun.lwuit.VirtualKeyboard.actionCommand(+81)
    at com.sun.lwuit.Form.actionCommandImpl(+81)
    at com.sun.lwuit.Button.fireActionEvent(+47)
    at com.sun.lwuit.Button.released(+11)
    at com.sun.lwuit.Button.pointerReleased(+14)
    at com.sun.lwuit.Form.pointerReleased(+186)
    at com.sun.lwuit.Dialog.pointerReleased(+6)
    at com.sun.lwuit.VirtualKeyboard.pointerReleased(+19)
    at com.sun.lwuit.Component.pointerReleased(+10)
    at com.sun.lwuit.Display.handleEvent(+151)
    at com.sun.lwuit.Display.edtLoopImpl(+118)
    at com.sun.lwuit.Display.invokeAndBlock(+84)
    at com.sun.lwuit.Display.invokeAndBlock(+6)
    at com.sun.lwuit.Form.showModal(+416)
    at com.sun.lwuit.Dialog.showModal(+86)
    at com.sun.lwuit.Dialog.show(+89)
    at com.sun.lwuit.Dialog.showPacked(+411)
    at com.sun.lwuit.VirtualKeyboard.show(+7)
    at com.sun.lwuit.Dialog.showDialog(+9)
    at com.sun.lwuit.VirtualKeyboard.showKeyboard(+135)
    at com.sun.lwuit.Display.setShowVirtualKeyboard(+23)
    at com.sun.lwuit.TextArea.pointerReleased(+25)
    at com.sun.lwuit.TextField.pointerReleased(+189)
    at com.sun.lwuit.Form.pointerReleased(+186)
    at com.sun.lwuit.Component.pointerReleased(+10)
    at com.sun.lwuit.Display.handleEvent(+151)
    at com.sun.lwuit.Display.edtLoopImpl(+118)
    at com.sun.lwuit.Display.mainEDTLoop(+208)
    at com.sun.lwuit.RunnableWrapper.run(+245)

它甚至在 LWUITDemo.jar 中也不起作用....是否有任何解决方案，或者无论如何要禁用 midlet 中的虚拟键盘

Answer 1

该问题特定于当前版本的 LWUIT 设计器，将在即将到来的更新中修复。

您遇到的编译问题是由于使用了 UI 项目而不是使用了适当的端口（例如 MIDP/UI 项目）。