如何在J2ME移动应用程序的画布上显示对话框? [英] How can I show dialog box on canvas in J2ME mobile application?

问题描述

可能重复:
是否可以在无线工具包2.5.2中使用带有javax.microedition.lcdui.Canvas的lwuit.Dialog吗?

Possible Duplicate:
Is this possible to use lwuit.Dialog with javax.microedition.lcdui.Canvas in wireless toolkit 2.5.2?

我创建了一个画布，当我按下移动键时可以写内容(例如，如果我按下"A"，它将使用绘画功能将其写在屏幕上).现在，当我从移动设备上按任意键时，我想显示一个对话框或弹出窗口.使用Canvas时是否可以显示对话框?

I created a canvas to write contents when I press mobile keys(for Example if I press "A" it will be written on the screen using paint function). Now I want to show a dialog or PopUp window when I press any key from mobile. Is it possible to show dialog when am using Canvas?

举个例子，

   public class Mycanvas extends Canvas implement ActionListener
   {
     Dialog dialog=new Dialog();

     }

推荐答案

好的，我认为您必须这样做. LWUIT中正确的方法是使用Dialog.

Ok, I think you must do that. The right thing in LWUIT is using Dialog.

使用new创建一个Dialog.即Dialog d = new Dialog()

下一步是用Dialog.setTitle(String text)填充标题和正文，或者在Dialog的版式中放入一些内容.

The next step is filling the title and body with Dialog.setTitle(String text) or putting something inside the Dialog's layout.

当准备显示Dialog时，必须调用Dialog.show()，要删除它，请调用Dialog.dispose()

When your Dialog is ready to be shown, you must call to Dialog.show() and when you want to remove it, call to Dialog.dispose()

在这里看看

是是否可以在无线工具包2.5.2中将lwuit.Dialog与javax.microedition.lcdui.Canvas一起使用?

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