一、需求

Build类获取手机制造商，系统定制商，型号，Android 系统版本，CPU 指令集，可以查看是否支持64位等

二、源码

//// Source code recreated from a .class file by IntelliJ IDEA// (powered by Fernflower decompiler)//package android.os;import android.os.SystemProperties;import android.text.TextUtils;import android.util.Slog;import com.mediatek.cta.CtaUtils;import dalvik.system.VMRuntime;import java.util.Objects;public class Build {
       private static final String TAG = "Build";    // 当一个版本属性不知道时所设定的值。其字符串值为 "unknown" .    public static final String UNKNOWN = "unknown";    // 修订版本列表：Either a changelist number, or a label like "M4-rc20".    public static final String ID = getString("ro.build.id");    // DISPLAY  显示屏参数    public static final String DISPLAY = getString("ro.build.display.id");    // PRODUCT 整个产品的名称：The name of the overall product.    public static final String PRODUCT = getString("ro.product.name");    // 设备参数：The name of the industrial design.    public static final String DEVICE = getString("ro.product.device");    // 主板：The name of the underlying board, like "goldfish".    public static final String BOARD = getString("ro.product.board");    // cpu指令集：The name of the instruction set (CPU type + ABI convention) of native code.    /** @deprecated */    @Deprecated    public static final String CPU_ABI;    // cpu指令集2：The name of the second instruction set (CPU type + ABI convention) of native code.    /** @deprecated */    @Deprecated    public static final String CPU_ABI2;    // MANUFACTURER  硬件制造商：The manufacturer of the product/hardware.    public static final String MANUFACTURER = getString("ro.product.manufacturer");    // 系统定制商：The consumer-visible brand with which the product/hardware will be associated, if any.    // 版本即最终用户可见的名称：The end-user-visible name for the end product.    public static final String BRAND = getString("ro.product.brand");    public static final String MODEL = getString("ro.product.model");    // BOOTLOADER 系统启动程序版本号：The system bootloader version number.    public static final String BOOTLOADER = getString("ro.bootloader");    // 无线电固件版本：The radio firmware version number.   在API14后已过时。使用 getRadioVersion()代替    /** @deprecated */    @Deprecated    public static final String RADIO = getString("gsm.version.baseband");    public static final String HARDWARE = getString("ro.hardware");    public static final boolean IS_EMULATOR = getString("ro.kernel.qemu").equals("1");    // 硬件序列号：A hardware serial number, if available. Alphanumeric only, case-insensitive.    public static final String SERIAL = getString("ro.serialno");    public static final String[] SUPPORTED_ABIS = getStringList("ro.product.cpu.abilist", ",");    public static final String[] SUPPORTED_32_BIT_ABIS = getStringList("ro.product.cpu.abilist32", ",");    public static final String[] SUPPORTED_64_BIT_ABIS = getStringList("ro.product.cpu.abilist64", ",");    public static final String TYPE;    // 描述build的标签,如未签名，debug等等。：Comma-separated tags describing the build, like "unsigned,debug".    public static final String TAGS;    // 唯一识别码：A string that uniquely identifies this build. Do not attempt to parse this value.    public static final String FINGERPRINT;    public static final long TIME;    public static final String USER;    public static final String HOST;    public static final boolean IS_DEBUGGABLE;    public static final boolean PERMISSIONS_REVIEW_REQUIRED;    public Build() {    }    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;    }    public static void ensureFingerprintProperty() {        if(TextUtils.isEmpty(SystemProperties.get("ro.build.fingerprint"))) {            try {                SystemProperties.set("ro.build.fingerprint", FINGERPRINT);            } catch (IllegalArgumentException var1) {                Slog.e("Build", "Failed to set fingerprint property", var1);            }        }    }    public static boolean isBuildConsistent() {        if("eng".equals(TYPE)) {            return true;        } else {            String system = SystemProperties.get("ro.build.fingerprint");            String vendor = SystemProperties.get("ro.vendor.build.fingerprint");            String bootimage = SystemProperties.get("ro.bootimage.build.fingerprint");            String requiredBootloader = SystemProperties.get("ro.build.expect.bootloader");            String currentBootloader = SystemProperties.get("ro.bootloader");            String requiredRadio = SystemProperties.get("ro.build.expect.baseband");            String currentRadio = SystemProperties.get("gsm.version.baseband");            if(TextUtils.isEmpty(system)) {                Slog.e("Build", "Required ro.build.fingerprint is empty!");                return false;            } else if(!TextUtils.isEmpty(vendor) && !Objects.equals(system, vendor)) {                Slog.e("Build", "Mismatched fingerprints; system reported " + system + " but vendor reported " + vendor);                return false;            } else {                return true;            }        }    }    public static String getRadioVersion() {        return SystemProperties.get("gsm.version.baseband", (String)null);    }    private static String getString(String property) {        return SystemProperties.get(property, "unknown");    }    private static String[] getStringList(String property, String separator) {        String value = SystemProperties.get(property);        return value.isEmpty()?new String[0]:value.split(separator);    }    private static long getLong(String property) {        try {            return Long.parseLong(SystemProperties.get(property));        } catch (NumberFormatException var2) {            return -1L;        }    }    public static boolean isPermissionReviewRequired() {        return PERMISSIONS_REVIEW_REQUIRED || CtaUtils.isCtaSupported();    }    static {        String[] abiList;        if(VMRuntime.getRuntime().is64Bit()) {            abiList = SUPPORTED_64_BIT_ABIS;        } else {            abiList = SUPPORTED_32_BIT_ABIS;        }        CPU_ABI = abiList[0];        if(abiList.length > 1) {            CPU_ABI2 = abiList[1];        } else {            CPU_ABI2 = "";        }        TYPE = getString("ro.build.type");        TAGS = getString("ro.build.tags");        FINGERPRINT = deriveFingerprint();        TIME = getLong("ro.build.date.utc") * 1000L;        USER = getString("ro.build.user");        HOST = getString("ro.build.host");        IS_DEBUGGABLE = SystemProperties.getInt("ro.debuggable", 0) == 1;        PERMISSIONS_REVIEW_REQUIRED = SystemProperties.getInt("ro.permission_review_required", 0) == 1;    }    public static class VERSION_CODES {
           public static final int CUR_DEVELOPMENT = 10000;        public static final int BASE = 1;        public static final int BASE_1_1 = 2;        public static final int CUPCAKE = 3;        public static final int DONUT = 4;        public static final int ECLAIR = 5;        public static final int ECLAIR_0_1 = 6;        public static final int ECLAIR_MR1 = 7;        public static final int FROYO = 8;        public static final int GINGERBREAD = 9;        public static final int GINGERBREAD_MR1 = 10;        public static final int HONEYCOMB = 11;        public static final int HONEYCOMB_MR1 = 12;        public static final int HONEYCOMB_MR2 = 13;        public static final int ICE_CREAM_SANDWICH = 14;        public static final int ICE_CREAM_SANDWICH_MR1 = 15;        public static final int JELLY_BEAN = 16;        public static final int JELLY_BEAN_MR1 = 17;        public static final int JELLY_BEAN_MR2 = 18;        public static final int KITKAT = 19;        public static final int KITKAT_WATCH = 20;        public static final int L = 21;        public static final int LOLLIPOP = 21;        public static final int LOLLIPOP_MR1 = 22;        public static final int M = 23;        public static final int N = 24;        public VERSION_CODES() {        }    }    public static class VERSION {
           public static final String INCREMENTAL = Build.getString("ro.build.version.incremental");        public static final String RELEASE = Build.getString("ro.build.version.release");        public static final String BASE_OS = SystemProperties.get("ro.build.version.base_os", "");        public static final String SECURITY_PATCH = SystemProperties.get("ro.build.version.security_patch", "");        /** @deprecated */        @Deprecated        public static final String SDK = Build.getString("ro.build.version.sdk");        public static final int SDK_INT = SystemProperties.getInt("ro.build.version.sdk", 0);        public static final int PREVIEW_SDK_INT = SystemProperties.getInt("ro.build.version.preview_sdk", 0);        public static final String CODENAME = Build.getString("ro.build.version.codename");        private static final String[] ALL_CODENAMES = Build.getStringList("ro.build.version.all_codenames", ",");        public static final String[] ACTIVE_CODENAMES;        public static final int RESOURCES_SDK_INT;        public VERSION() {        }        static {            ACTIVE_CODENAMES = "REL".equals(ALL_CODENAMES[0])?new String[0]:ALL_CODENAMES;            RESOURCES_SDK_INT = SDK_INT + ACTIVE_CODENAMES.length;        }    }}

三、运用

package com.fadisu.cpurun.util;import java.lang.reflect.Field;import android.os.Build;import android.util.Log;public class BuildHelper {
       private static final String TAG = BuildHelper.class.getSimpleName();    /**     * Build class所有的字段属性     * Build.BOARD : Z91     * Build.BOOTLOADER : unknown     * Build.BRAND : FaDi     * Build.CPU_ABI : arm64-v8a     * Build.CPU_ABI2 :     * Build.DEVICE : Z91     * Build.DISPLAY : TEST_FaDi_Z91_S100_20180108     * Build.FINGERPRINT : FaDi/Z91/Z91:7.1.1/N6F26Q/1515397384:user/release-keys     * Build.HARDWARE : mt6739     * Build.HOST : 69959bbb90c6     * Build.ID : N6F26Q     * Build.IS_DEBUGGABLE : true     * Build.IS_EMULATOR : false     * Build.MANUFACTURER : FaDi     * Build.MODEL : Z91     * Build.PERMISSIONS_REVIEW_REQUIRED : false     * Build.PRODUCT : Z91     * Build.RADIO : unknown     * Build.SERIAL : 0123456789ABCDEF     * Build.SUPPORTED_32_BIT_ABIS : [Ljava.lang.String;@305cf5e     * Build.SUPPORTED_64_BIT_ABIS : [Ljava.lang.String;@f5c1f3f     * Build.SUPPORTED_ABIS : [Ljava.lang.String;@578b00c     * Build.TAG : Build     * Build.TAGS : release-keys     * Build.TIME : 1515397382000     * Build.TYPE : user     * Build.UNKNOWN : unknown     * Build.USER : FaDi     * Build.VERSION.ACTIVE_CODENAMES : [Ljava.lang.String;@f4ecd55     * Build.VERSION.ALL_CODENAMES : [Ljava.lang.String;@bdb836a     * Build.VERSION.BASE_OS :     * Build.VERSION.CODENAME : REL     * Build.VERSION.INCREMENTAL : 1515397384     * Build.VERSION.PREVIEW_SDK_INT : 0     * Build.VERSION.RELEASE : 7.1.1     * Build.VERSION.RESOURCES_SDK_INT : 25     * Build.VERSION.SDK : 25     * Build.VERSION.SDK_INT : 25     * Build.VERSION.SECURITY_PATCH : 2017-11-05     */    public static void getAllBuildInformation() {        Field[] fields = Build.class.getDeclaredFields();        for (Field field : fields) {            try {                field.setAccessible(true);                Log.w(TAG, "Build." + field.getName() + " : " + field.get(null));            } catch (Exception e) {                Log.e(TAG, "an error occured when collect crash info", e);            }        }        Field[] fieldsVersion = Build.VERSION.class.getDeclaredFields();        for (Field field : fieldsVersion) {            try {                field.setAccessible(true);                Log.w(TAG, "Build.VERSION." + field.getName() + " : " + field.get(null));            } catch (Exception e) {                Log.e(TAG, "an error occured when collect crash info", e);            }        }    }    // 手机制造商    public static String getProduct() {        return Build.PRODUCT;    }    // 系统定制商    public static String getBrand() {        return Build.BRAND;    }    // 硬件制造商    public static String getManufacturer() {        return Build.MANUFACTURER;    }    // 硬件名称    public static String getHardWare() {        return  Build.HARDWARE;    }    // 型号    public static String getMode() {        return Build.MODEL;    }    // Android 系统版本    public static String getAndroidVersion() {        return  Build.VERSION.RELEASE;    }    // CPU 指令集，可以查看是否支持64位    public static String getCpuAbi() {        return Build.CPU_ABI;    }}

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