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您知道在 J2ME 中更改屏幕亮度的任何方法吗？那是使用特定于供应商的 API，如三星等。
谢谢！
我认为最接近的是Display.flashBacklight(int duration)
Display.flashBacklight(int duration)
http://www.microemu.org/microemu-midp/apidocs/javax/microedition/lcdui/Display.html#flashBacklight%28int%29
另请参阅http://support.developer.motorola.com/cgi-bin/motodev.cfg/php/enduser/std_adp.php?p_faqid=592&p_created=1170311265&p_topview=1
使用诺基亚特定的 API 可以做到这一点。