登录
当前位置： 首页 > 工具软件 > zdzsoft AutoBuild > 使用案例 >

android源码分析之类Build

陆飞龙
2023-12-01

Build类包含了许多手机信息，如手机设备名，芯片名，制程商的名字，model，android软件版本，SDK，fingerprint等等重要信息。

一个关于Build的Demo

import android.os.Build;


private void init() {
    // TODO Auto-generated method stub
    Log.i(TAG, "Build.ID:"+Build.ID);
    Log.i(TAG, "Build.DISPLAY:"+Build.DISPLAY);
    Log.i(TAG, "Build.PRODUCT:"+Build.PRODUCT);
    Log.i(TAG, "Build.DEVICE:"+Build.DEVICE);
    Log.i(TAG, "Build.BOARD:"+Build.BOARD);
    Log.i(TAG, "Build.MANUFACTURER:"+Build.MANUFACTURER);
    Log.i(TAG, "Build.BRAND:"+Build.BRAND);
    Log.i(TAG, "Build.MODEL:"+Build.MODEL);
    Log.i(TAG, "Build.BOOTLOADER:"+Build.BOOTLOADER);
    Log.i(TAG, "Build.HARDWARE:"+Build.HARDWARE);
    Log.i(TAG, "Build.SERIAL:"+Build.SERIAL);
    //Log.i(TAG, "Build.SUPPORTED_ABIS:"+Build.SUPPORTED_ABIS);
    //Log.i(TAG, "Build.SUPPORTED_32_BIT_ABIS:"+Build.SUPPORTED_32_BIT_ABIS);
    //Log.i(TAG, "Build.SUPPORTED_64_BIT_ABIS:"+Build.SUPPORTED_64_BIT_ABIS);
    Log.i(TAG, "Build.VERSION.INCREMENTAL:"+Build.VERSION.INCREMENTAL);
    Log.i(TAG, "Build.VERSION.RELEASE:"+Build.VERSION.RELEASE);
    Log.i(TAG, "Build.VERSION.SDK:"+Build.VERSION.SDK);
    Log.i(TAG, "Build.VERSION.SDK_INT:"+Build.VERSION.SDK_INT);
    Log.i(TAG, "Build.VERSION.CODENAME:"+Build.VERSION.CODENAME);
    Log.i(TAG, "Build.TYPE:"+Build.TYPE);
    Log.i(TAG, "Build.TAGS:"+Build.TAGS);
    Log.i(TAG, "Build.FINGERPRINT:"+Build.FINGERPRINT);
    Log.i(TAG, "Build.TIME:"+Build.TIME);
    Log.i(TAG, "Build.USER:"+Build.USER);
    Log.i(TAG, "Build.HOST:"+Build.HOST);
    //Log.i(TAG, "Build.IS_DEBUGGABLE:"+Build.IS_DEBUGGABLE);
}

Log信息如下：

11-27 08:02:22.975: I/MainActivity(13256): Build.ID:LRX22G
11-27 08:02:22.975: I/MainActivity(13256): Build.DISPLAY:LRX22G release-keys
11-27 08:02:22.975: I/MainActivity(13256): Build.PRODUCT:l9010_cla
11-27 08:02:22.975: I/MainActivity(13256): Build.DEVICE:l9010_cla
11-27 08:02:22.975: I/MainActivity(13256): Build.BOARD:msm8916
11-27 08:02:22.975: I/MainActivity(13256): Build.MANUFACTURER:Lanix
11-27 08:02:22.975: I/MainActivity(13256): Build.BRAND:qcom
11-27 08:02:22.975: I/MainActivity(13256): Build.MODEL:Ilium L950
11-27 08:02:22.976: I/MainActivity(13256): Build.BOOTLOADER:unknown
11-27 08:02:22.976: I/MainActivity(13256): Build.HARDWARE:qcom
11-27 08:02:22.976: I/MainActivity(13256): Build.SERIAL:1ca7811b
11-27 08:02:22.976: I/MainActivity(13256): Build.VERSION.INCREMENTAL:eng.android.20151126
11-27 08:02:22.976: I/MainActivity(13256): Build.VERSION.RELEASE:5.0.2
11-27 08:02:22.976: I/MainActivity(13256): Build.VERSION.SDK:21
11-27 08:02:22.976: I/MainActivity(13256): Build.VERSION.SDK_INT:21
11-27 08:02:22.976: I/MainActivity(13256): Build.VERSION.CODENAME:REL
11-27 08:02:22.976: I/MainActivity(13256): Build.TYPE:user
11-27 08:02:22.976: I/MainActivity(13256): Build.TAGS:release-keys
11-27 08:02:22.976: I/MainActivity(13256): Build.FINGERPRINT:LANIX/Ilium_L950/Ilium_L950:5.0.2/LRX22G/eng.android.20150828:user/release-keys
11-27 08:02:22.976: I/MainActivity(13256): Build.TIME:1448503027000
11-27 08:02:22.976: I/MainActivity(13256): Build.USER:android
11-27 08:02:22.976: I/MainActivity(13256): Build.HOST:C208

Build源码分析

基本属性

我们打开Build源码(./frameworks/base/core/java/android/os/Build.java)，大概的看一下源码：

public class Build {
    private static final String TAG = "Build";

    /** Value used for when a build property is unknown. */
    public static final String UNKNOWN = "unknown";

    /** Either a changelist number, or a label like "M4-rc20". */
    public static final String ID = getString("ro.build.id");

    /** A build ID string meant for displaying to the user */
    public static final String DISPLAY = getString("ro.build.display.id");

    /** The name of the overall product. */
    public static final String PRODUCT = getString("ro.product.name");

    /** The name of the industrial design. */
    public static final String DEVICE = getString("ro.product.device");

    /** The name of the underlying board, like "goldfish". */
    public static final String BOARD = getString("ro.product.board");

.............

Build类中主要是一些成员属性，这些属性看的眼熟不，对，如果你接触过手机的属性的话，那么你就会明白，这就是读取的手机属性值。

下面是我列的一个表格：

成员属性手机属性名手机属性值
IDro.build.idLRX22G
DISPLAYro.build.display.idLRX22G release-keys
PRODUCTro.product.namel9010_cla
DEVICEro.product.devicel9010_cla
BOARDro.product.boardmsm8916
MANUFACTURERro.product.manufacturerLanix
BRANDro.product.brandqcom
MODELro.product.modelIlium L950
BOOTLOADERro.bootloaderunknown
HARDWAREro.hardwareqcom
SERIALro.serialno1ca7811b
SUPPORTED_ABISro.product.cpu.abilistarmeabi-v7a,armeabi
SUPPORTED_32_BIT_ABISro.product.cpu.abilist32armeabi-v7a,armeabi
SUPPORTED_64_BIT_ABISro.product.cpu.abilist64
INCREMENTALro.build.version.incrementaleng.android.20151126
RELEASEro.build.version.release5.0.2
SDKro.build.version.sdk21
SDK_INTro.build.version.sdk21
CODENAMEro.build.version.codenameREL
TYPEro.build.typeuser
TAGSro.build.tagsrelease-keys
FINGERPRINTro.build.fingerprintLANIX/Ilium_L950/Ilium_L950:5.0.2/LRX22G/eng.android.20150828:user/release-keys
TIMEro.build.date.utc1448503027
USERro.build.userandroid
HOSTro.build.hostC208
IS_DEBUGGABLEro.debuggable1

关于版本的成员属性

VERSION_CODES:
        /**
         * October 2008: The original, first, version of Android.  Yay!
         */
        public static final int BASE = 1;

        /**
         * February 2009: First Android update, officially called 1.1.
         */
        public static final int BASE_1_1 = 2;

        /**
         * May 2009: Android 1.5.
         */
        public static final int CUPCAKE = 3;

        /**
         * September 2009: Android 1.6. 
         */
        public static final int DONUT = 4;

     ........................
     ........................

        /**
         * Android 4.4W: KitKat for watches, snacks on the run.
         */
        public static final int KITKAT_WATCH = 20;

        /**
         * Temporary until we completely switch to {@link #LOLLIPOP}.
         * @hide
         */
        public static final int L = 21;

        /**
         * Lollipop.  A flat one with beautiful shadows.  But still tasty.
         */
        public static final int LOLLIPOP = 21;

下面这个列表是关于软件版本号的表格：

VERSION_CODES：

成员属性软件版本号APK值
BASE1.01
BASE_1_11.12
CUPCAKE1.53
DONUT1.64
ECLAIR2.05
EECLAIR_0_12.0.16
ECLAIR_MR12.17
FROYO2.28
GINGERBREAD2.39
GINGERBREAD_MR12.3.310
HONEYCOMB3.011
HONEYCOMB_MR13.112
HONEYCOMB_MR23.213
ICE_CREAM_SANDWICH4.014
ICE_CREAM_SANDWICH_MR14.0.315
JELLY_BEAN4.116
JELLY_BEAN_MR14.217
JELLY_BEAN_MR24.318
KITKAT4.419
KITKAT_WATCH4.4W20
L5.021
LOLLIPOP5.021

关于fingerprint

先看代码：


private static String deriveFingerprint() {
        String finger = SystemProperties.get("ro.build.fingerprint");
        if (TextUtils.isEmpty(finger)) {
            finger = getString("ro.product.brand") + '/' +
                    getString("ro.product.name") + '/' +
                    getString("ro.product.device") + ':' +
                    getString("ro.build.version.release") + '/' +
                    getString("ro.build.id") + '/' +
                    getString("ro.build.version.incremental") + ':' +
                    getString("ro.build.type") + '/' +
                    getString("ro.build.tags");
        }
        return finger;
}

代码非常明白的告诉我们，fingerprint有二种方式获取，
一种是直接读取：ro.build.fingerprint，
如果读取的ro.build.fingerprint信息为空，那么我们会使用拼接的方式获取fingerprint:
拼接的方式如下：

ro.product.brand+ro.product.name+ro.product.device+ro.build.version.release+ro.build.id+ro.build.version.incremental+ro.build.type+ro.build.tags

拼接结果如下：

qcom+l9010_cla+l9010_cla+5.0.2+LRX22G+eng.android.20151126+user+release-keys

我们直接读取的如果：

LANIX/Ilium_L950/Ilium_L950:5.0.2/LRX22G/eng.android.20150828:user/release-keys

如果，这二种方式得到的fingerprint不一致，在GMS认证时CTS测试会有一个fingerprint的测试fail项，我们只要对应此拼接的方式来修改对应的属性值，就可以把此Fail项解决。

 类似资料：

相关阅读

JDK源码分析之String、StringBuilder和StringBufferStruts2源码分析之ParametersInterceptor拦截器Underscore源码分析Django restframework 源码分析之认证详解Java并发系列之CountDownLatch源码分析

相关文章

AQS之CountDownLatch分析 (八)AQS之Semaphore分析 (七)AQS之Condition分析 (六)AQS之ReentrantLock分析 (五)AQS之ReentrantLock分析 (四)

相关问答

Jsoup解析android span类Android Studio被困在“分析…”fragmentLayout.java的android碎片源代码使用频率分析/密码分析技术破译密码文本对于一个大项目的源代码，我们如何处理Spoon的源代码分析中的“xxx类型已经定义”？

相关文档

Hyperledger 源码分析之 FabricTendermint 源码分析Memcached 源码分析OpenStack Neutron 源码分析OpenStack HeatClient 源码分析
快捷导航： 新手教程 算法原理 架构设计 Java进阶 数据库进阶 大厂专栏 面试经验 编程笔记 编程问答 所有专题 文档资料 工具软件 电子书籍 小牛导航
在线工具： 房贷计算器 个税计算器 Linux命令查询 Json格式化 正则表达式 颜色转换 AES加解密 SHA1加密 MD5加密 毒鸡汤 字数统计 随机密码生成 进制转换 Base64编解码 励志句子
Copyright © 2019-2024 小牛知识库@xnip.cn. All Rights Reserved.