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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