Android 7.1 单独编译launcher3 报错的问题

想去调试Android7.1的launcher3，结果编译发现如下错误：

注释掉标红处就好了。

 

#
# Copyright (C) 2013 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

LOCAL_PATH := $(call my-dir)

#
# Build app code.
#
include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_STATIC_JAVA_LIBRARIES := \
    android-support-v4 \
    android-support-v7-recyclerview \
    android-support-v7-palette

LOCAL_SRC_FILES := \
    $(call all-java-files-under, src) \
    $(call all-java-files-under, src_config) \
    $(call all-proto-files-under, protos)

LOCAL_SRC_FILES += src/com/qti/launcherunreadservice/IGetUnreadNumber.aidl

LOCAL_RESOURCE_DIR := \
    $(LOCAL_PATH)/res \
    frameworks/support/v7/recyclerview/res

LOCAL_PROGUARD_FLAG_FILES := proguard.flags

LOCAL_PROTOC_OPTIMIZE_TYPE := nano
LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)/protos/
LOCAL_AAPT_FLAGS := \
    --auto-add-overlay \
    --extra-packages android.support.v7.recyclerview \

LOCAL_SDK_VERSION := current
LOCAL_MIN_SDK_VERSION := 21
LOCAL_PACKAGE_NAME := Launcher3
LOCAL_OVERRIDES_PACKAGES := Home Launcher2

LOCAL_FULL_LIBS_MANIFEST_FILES := $(LOCAL_PATH)/AndroidManifest-common.xml

LOCAL_JACK_COVERAGE_INCLUDE_FILTER := com.android.launcher3.*

include $(BUILD_PACKAGE)

#
# Launcher proto buffer jar used for development
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-proto-files-under, protos)

LOCAL_PROTOC_OPTIMIZE_TYPE := nano
LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)/protos/

LOCAL_MODULE_TAGS := optional
LOCAL_MODULE := launcher_proto_lib
LOCAL_IS_HOST_MODULE := true
LOCAL_STATIC_JAVA_LIBRARIES := host-libprotobuf-java-nano

#include $(BUILD_HOST_JAVA_LIBRARY)

# ==================================================
include $(call all-makefiles-under,$(LOCAL_PATH))