Question

如何查看Android SDK源码版本

Answer 1

PLATFORM_VERSION := 4.2.2

位于/build/core/version_defaults.mk

#
# Copyright (C) 2008 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.
#

#
# Handle various build version information.
#
# Guarantees that the following are defined:
# PLATFORM_VERSION
# PLATFORM_SDK_VERSION
# PLATFORM_VERSION_CODENAME
# DEFAULT_APP_TARGET_SDK
# BUILD_ID
# BUILD_NUMBER
#

# Look for an optional file containing overrides of the defaults,
# but don't cry if we don't find it. We could just use -include, but
# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set
# if the file exists.
#
INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk)
ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)"
include $(INTERNAL_BUILD_ID_MAKEFILE)
endif

ifeq "" "$(PLATFORM_VERSION)"
# This is the canonical definition of the platform version,
# which is the version that we reveal to the end user.
# Update this value when the platform version changes (rather
# than overriding it somewhere else). Can be an arbitrary string.
PLATFORM_VERSION := 4.2.2 # SDK Version
endif

ifeq "" "$(PLATFORM_SDK_VERSION)"
# This is the canonical definition of the SDK version, which defines
# the set of APIs and functionality available in the platform. It
# is a single integer that increases monotonically as updates to
# the SDK are released. It should only be incremented when the APIs for
# the new release are frozen (so that developers don't write apps against
# intermediate builds). During development, this number remains at the
# SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
# the code-name of the new development work.
PLATFORM_SDK_VERSION := 17 #API Level
endif

ifeq "" "$(PLATFORM_VERSION_CODENAME)"
# This is the current development code-name, if the build is not a final
# release build. If this is a final release build, it is simply "REL".
PLATFORM_VERSION_CODENAME := REL
endif

ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
# This is the default minSdkVersion and targetSdkVersion to use for
# all .apks created by the build system. It can be overridden by explicitly
# setting these in the .apk's AndroidManifest.xml. It is either the code
# name of the development build or, if this is a release build, the official
# SDK version of this release.
ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)
else
DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)
endif
endif

ifeq "" "$(BUILD_ID)"
# Used to signify special builds. E.g., branches and/or releases,
# like "M5-RC7". Can be an arbitrary string, but must be a single
# word and a valid file name.
#
# If there is no BUILD_ID set, make it obvious.
BUILD_ID := UNKNOWN
endif

ifeq "" "$(BUILD_NUMBER)"
# BUILD_NUMBER should be set to the source control value that
# represents the current state of the source code. E.g., a
# perforce changelist number or a git hash. Can be an arbitrary string
# (to allow for source control that uses something other than numbers),
# but must be a single word and a valid file name.
#
# If no BUILD_NUMBER is set, create a useful "I am an engineering build
# from this date/time" value. Make it start with a non-digit so that
# anyone trying to parse it as an integer will probably get "0".
BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
endif
root@idong:/home/hejian/rk3066-4.2/build/core#
root@idong:/home/hejian/rk3066-4.2/build/core# cat version_defaults.mk
#
# Copyright (C) 2008 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.
#

#
# Handle various build version information.
#
# Guarantees that the following are defined:
# PLATFORM_VERSION
# PLATFORM_SDK_VERSION
# PLATFORM_VERSION_CODENAME
# DEFAULT_APP_TARGET_SDK
# BUILD_ID
# BUILD_NUMBER
#

# Look for an optional file containing overrides of the defaults,
# but don't cry if we don't find it. We could just use -include, but
# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set
# if the file exists.
#
INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk)
ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)"
include $(INTERNAL_BUILD_ID_MAKEFILE)
endif

ifeq "" "$(PLATFORM_VERSION)"
# This is the canonical definition of the platform version,
# which is the version that we reveal to the end user.
# Update this value when the platform version changes (rather
# than overriding it somewhere else). Can be an arbitrary string.
PLATFORM_VERSION := 4.2.2
endif

ifeq "" "$(PLATFORM_SDK_VERSION)"
# This is the canonical definition of the SDK version, which defines
# the set of APIs and functionality available in the platform. It
# is a single integer that increases monotonically as updates to
# the SDK are released. It should only be incremented when the APIs for
# the new release are frozen (so that developers don't write apps against
# intermediate builds). During development, this number remains at the
# SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
# the code-name of the new development work.
PLATFORM_SDK_VERSION := 17
endif

ifeq "" "$(PLATFORM_VERSION_CODENAME)"
# This is the current development code-name, if the build is not a final
# release build. If this is a final release build, it is simply "REL".
PLATFORM_VERSION_CODENAME := REL
endif

ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
# This is the default minSdkVersion and targetSdkVersion to use for
# all .apks created by the build system. It can be overridden by explicitly
# setting these in the .apk's AndroidManifest.xml. It is either the code
# name of the development build or, if this is a release build, the official
# SDK version of this release.
ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)
else
DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)
endif
endif

ifeq "" "$(BUILD_ID)"
# Used to signify special builds. E.g., branches and/or releases,
# like "M5-RC7". Can be an arbitrary string, but must be a single
# word and a valid file name.
#
# If there is no BUILD_ID set, make it obvious.
BUILD_ID := UNKNOWN
endif

ifeq "" "$(BUILD_NUMBER)"
# BUILD_NUMBER should be set to the source control value that
# represents the current state of the source code. E.g., a
# perforce changelist number or a git hash. Can be an arbitrary string
# (to allow for source control that uses something other than numbers),
# but must be a single word and a valid file name.
#
# If no BUILD_NUMBER is set, create a useful "I am an engineering build
# from this date/time" value. Make it start with a non-digit so that
# anyone trying to parse it as an integer will probably get "0".
BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
endif

Answer 2

一种办法是自带SDK管理工具更新:

另外的办法就是:
第一步:查看当前工程的SDK版本;

2.打开工程,查找任意一个函数,点击右键,选择查看源码.

3.提示找不到java源文件,这里需要手动添加源文件;

4.按图选择.这里还没有source的文件夹..所以..去下载相关平台的SDK的java源码;

5.打开网址:http //rgruet free fr/public/
根据SDK版本下载对应的源码,比如2.1的.

6.在SDK平台目录下,新建一个sources文件夹;

7.把源码直接解压到当前文件夹下;

8.再次选择查到源码,并选择sources文件夹;

9.eclipse会自动导入;

10.再次查看函数的源码,是不是代码就出来了.