android 9 源碼編譯錯誤 error: cannot find symbol import android.os.UpdateEngine

今天導入UpdateEngine包，編譯的時候報錯：

vendor/nxp-opensource/fsl_imx_demo/NaLongUpgrade/app/src/main/java/com/mile8/nalongupgrade/MainActivity.java:9: error: cannot find symbol
import android.os.UpdateEngine;
                 ^
  symbol:   class UpdateEngine
  location: package android.os
vendor/nxp-opensource/fsl_imx_demo/NaLongUpgrade/app/src/main/java/com/mile8/nalongupgrade/MainActivity.java:23: error: cannot find symbol
	private UpdateEngine ue;
	        ^
  symbol:   class UpdateEngine
  location: class MainActivity
2 errors
ninja: build stopped: subcommand failed.
09:41:17 ninja failed with: exit status 1

查度娘，說是  刪除Android.mk中的LOCAL_SDK_VERSION := current

 

這樣弄後報錯：

vendor/nxp-opensource/fsl_imx_demo/NaLongUpgrade/Android.mk: error: NaLongUpgrade: Must specify LOCAL_SDK_VERSION or LOCAL_PRIVATE_PLATFORM_APIS, 
build/make/core/sdk_check.mk:21: error: done.
09:49:19 ckati failed with: exit status 1

#### failed to build some targets (21 seconds) ####

對比源碼裏面另一個app工程的mk文件，發現將 LOCAL_SDK_VERSION 更改爲 LOCAL_PRIVATE_PLATFORM_APIS ：

# LOCAL_SDK_VERSION := current
LOCAL_PRIVATE_PLATFORM_APIS := current

 編譯通過

 

參考：

https://blog.csdn.net/jsonz/article/details/41117593