修改如下
device/qcom/common/base.mk
ifeq ($(WITH_DEXPREOPT),)WITH_DEXPREOPT := true
WITH_DEXPREOPT_PIC := true
ifneq ($(TARGET_BUILD_VARIANT),user)
# Retain classes.dex in APK's for non-user builds
WITH_DEXPREOPT := false
WITH_DEXPREOPT_PIC := false
DEX_PREOPT_DEFAULT := nostripping
endif
endif