1、修改路径
状态栏路径：frameworks/base/core/res/res/values/dimens.xml
<!-- Height of the status bar in portrait --><dimen name="status_bar_height_portrait">50dp</dimen>
导航栏路径：packages/services/Car/car_product/overlay/frameworks/base/core/res/res/values/dimens.xml
<!-- Both of these are used in separate positions so make sure that they remain the same. --><dimen name="navigation_bar_height_car_mode">100px</dimen><dimen name="navigation_bar_height_landscape">100px</dimen>
2、编译
1. 编译目录 frameworks/base/core/res 2. 编译命令 mm，,编译完成后会在out/target/product/mek_8q/system/framework目录下生成framework-res.apk3. 验证 将生成的apk替换掉system/framework/framework-res.apk，然后重启
