如何在后台运行J2ME应用程序？ [英] How to make a J2ME application run in Background?

问题描述

我有一个J2ME应用程序，它使用蓝牙并在对等移动设备中搜索文件并下载它。我希望让我的应用程序在后台运行，无论何时我接到电话，或者消息以及稍后几秒后恢复，有没有人就此工作请分享您的经验。有没有办法在后台运行Midlet？

I have a written a J2ME application which uses Bluetooth and search a file within the peer mobile and download it. I would like to make my application run in background , whenever I get a call , or message and later resume after few seconds , Has anybody worked on this please share your experience . Is there any way to run a Midlet in background ?

推荐答案

将j2me应用程序设置为后台使用midlet中的以下内容class：

to set a j2me app to the background use the following in your midlet class:

          Display.getDisplay (this).setCurrent (null);

让屏幕恢复使用以下内容：

to get the screen back use the following:

          Display.getDisplay (this).setCurrent (myCanvas);

myCanvas是你的画布实例化

Where myCanvas is your canvas instantiation

R

ps在隐藏midlet时，您仍然可以使用线程或计时器在后台执行操作。

p.s. You can still use a thread or timer to do things in the background while your midlet is hidden.

p.s.2：这不适用于所有型号。 （适用于诺基亚s60，SonyEricsson，但不适用于诺基亚s40，三星和其他一些产品。

p.s.2: this does not work on all models. (Works on Nokia s60, SonyEricsson, but not on Nokia s40, Samsung and some others.

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