Java 运行的时候如何不让屏幕熄灭？

可以修改如下代码： 

static void BacklightTimerHdlr(void) 

 { 

  /*----------------------------------------------------------------*/ 

  /* Local Variables */ 

  /*----------------------------------------------------------------*/ 

 /*----------------------------------------------------------------*/ 

  /* Code Body */ 

  /*----------------------------------------------------------------*/ 

  MMI_TRACE(MMI_COMMON_TRC_G8_DEV, TRC_MMI_GPIO_BACKLIGHT_TIMER_HDLR, lcd_backlight,

 gBackLightTimerStatus); 

 /* AT command disables backlight mechanism */ 

  if (gbacklight_mode == 0) 

  { 

  return; 

  } 

 // 修改java不關BL 

  if (jam_is_own_screen()) 

  { 

  StopTimer(BACKLIGHT_TIMER); 

  StartTimer(BACKLIGHT_TIMER,g_phnset_gpio_cntx_p->bl_setting_hftime * 1000,

 BacklightTimerHdlr); 

  return ; 

  } 

 // 修改java不關BL end  

 /* 修改alarm 响的时候不关屏*/ 

 /* 

 if (AlmIsTonePlaying( ) || AlmIsActive( )) 

  { 

  StopTimer(BACKLIGHT_TIMER); 

  StartTimer(BACKLIGHT_TIMER, g_phnset_gpio_cntx_p->bl_setting_hftime *1000,

 BacklightTimerHdlr); 

  return ; 

  }*/ 

 /*其他代码不变*/ 

  。。。 

  }