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修改libcocos2dx的Utils文件

注释掉SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN和SYSTEM_UI_FLAG_FULLSCREEN

   public static void hideVirtualButton() {
        if (Build.VERSION.SDK_INT >= 19 &&
                null != Utils.sActivity) {
            // use reflection to remove dependence of API level

            Class viewClass = View.class;
            final int SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION = Cocos2dxReflectionHelper.<Integer>getConstantValue(viewClass, "SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION");
            final int SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN = Cocos2dxReflectionHelper.<Integer>getConstantValue(viewClass, "SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN");
            final int SYSTEM_UI_FLAG_HIDE_NAVIGATION = Cocos2dxReflectionHelper.<Integer>getConstantValue(viewClass, "SYSTEM_UI_FLAG_HIDE_NAVIGATION");
            final int SYSTEM_UI_FLAG_FULLSCREEN = Cocos2dxReflectionHelper.<Integer>getConstantValue(viewClass, "SYSTEM_UI_FLAG_FULLSCREEN");
            final int SYSTEM_UI_FLAG_IMMERSIVE_STICKY = Cocos2dxReflectionHelper.<Integer>getConstantValue(viewClass, "SYSTEM_UI_FLAG_IMMERSIVE_STICKY");
            final int SYSTEM_UI_FLAG_LAYOUT_STABLE = Cocos2dxReflectionHelper.<Integer>getConstantValue(viewClass, "SYSTEM_UI_FLAG_LAYOUT_STABLE");

            // getWindow().getDecorView().setSystemUiVisibility();
            final Object[] parameters = new Object[]{SYSTEM_UI_FLAG_LAYOUT_STABLE
                    | SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
//                    | SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    | SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar
//                    | SYSTEM_UI_FLAG_FULLSCREEN // hide status bar
                    | SYSTEM_UI_FLAG_IMMERSIVE_STICKY};
            Cocos2dxReflectionHelper.<Void>invokeInstanceMethod(Utils.sActivity.getWindow().getDecorView(),
                    "setSystemUiVisibility",
                    new Class[]{Integer.TYPE},
                    parameters);
        }
    }