Android 11.0 交换亮度键‘+’、‘-’键的功能

frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
在 interceptKeyBeforeDispatching 方法的亮度键的触发处：

if (keyCode == KeyEvent.KEYCODE_BRIGHTNESS_UP || keyCode == KeyEvent.KEYCODE_BRIGHTNESS_DOWN) {
    
    
               int direction = keyCode == KeyEvent.KEYCODE_BRIGHTNESS_UP ? 1 : -1;
                //wangrui 14-inch machine, set the brightness key transposition
                if ("3".equals(SystemProperties.get("xxx.scakeypad"))){
    
    
                    direction = direction*-1;
                }  
}

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