Android获取系统信息-android.os.Build类

android.os.Build类是一个非常方便使用的类，不需要任何权限。

说明如下：

android.os.Build.BOARD：获取设备基板名称
android.os.Build.BOOTLOADER：获取设备引导程序版本号
android.os.Build.BRAND：获取设备品牌
android.os.Build.CPU_ABI：获取设备指令集名称（CPU的类型）
android.os.Build.CPU_ABI2：获取第二个指令集名称
android.os.Build.DEVICE：获取设备驱动名称
android.os.Build.DISPLAY：获取设备显示的版本包（在系统设置中显示为版本号）和ID一样
android.os.Build.FINGERPRINT：设备的唯一标识。由设备的多个信息拼接合成
android.os.Build.HARDWARE：设备硬件名称，一般和基板名称一样（BOARD）
android.os.Build.HOST：设备主机地址
android.os.Build.ID：设备版本号
android.os.Build.MODEL：获取手机的型号 设备名称。如：SM-N9100（三星Note4）
android.os.Build.MANUFACTURER：获取设备制造商。如：samsung
android:os.Build.PRODUCT：产品的名称
android:os.Build.RADIO：无线电固件版本号，通常是不可用的 显示
unknownandroid.os.Build.TAGS：设备标签。如release-keys或测试的test-keys
android.os.Build.TIME：时间
android.os.Build.TYPE：设备版本类型主要为”user” 或”eng”
android.os.Build.USER：设备用户名 基本上都为android-build
android.os.Build.VERSION.RELEASE：获取系统版本字符串
android.os.Build.VERSION.CODENAME：设备当前的系统开发代号，一般使用REL代替
android.os.Build.VERSION.INCREMENTAL：系统源代码控制值，一个数字或者git哈希值
android.os.Build.VERSION.SDK：系统的API级别，推荐使用下面的SDK_INT来查看
android.os.Build.VERSION.SDK_INT：系统的API级别，int数值类型
android.os.Build.VERSION_CODES类：包含所有已公布的Android版本号，全部为int常量

android-27下的Build.java的源码：

package android.os;

public class Build {
    public static final String BOARD = null;
    public static final String BOOTLOADER = null;
    public static final String BRAND = null;
    /** @deprecated */
    @Deprecated
    public static final String CPU_ABI = null;
    /** @deprecated */
    @Deprecated
    public static final String CPU_ABI2 = null;
    public static final String DEVICE = null;
    public static final String DISPLAY = null;
    public static final String FINGERPRINT = null;
    public static final String HARDWARE = null;
    public static final String HOST = null;
    public static final String ID = null;
    public static final String MANUFACTURER = null;
    public static final String MODEL = null;
    public static final String PRODUCT = null;
    /** @deprecated */
    @Deprecated
    public static final String RADIO = null;
    /** @deprecated */
    @Deprecated
    public static final String SERIAL = null;
    public static final String[] SUPPORTED_32_BIT_ABIS = null;
    public static final String[] SUPPORTED_64_BIT_ABIS = null;
    public static final String[] SUPPORTED_ABIS = null;
    public static final String TAGS = null;
    public static final long TIME = 0L;
    public static final String TYPE = null;
    public static final String UNKNOWN = "unknown";
    public static final String USER = null;

    public Build() {
        throw new RuntimeException("Stub!");
    }

    public static String getSerial() {
        throw new RuntimeException("Stub!");
    }

    public static String getRadioVersion() {
        throw new RuntimeException("Stub!");
    }

    public static class VERSION_CODES {
        public static final int BASE = 1;
        public static final int BASE_1_1 = 2;
        public static final int CUPCAKE = 3;
        public static final int CUR_DEVELOPMENT = 10000;
        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 LOLLIPOP = 21;
        public static final int LOLLIPOP_MR1 = 22;
        public static final int M = 23;
        public static final int N = 24;
        public static final int N_MR1 = 25;
        public static final int O = 26;
        public static final int O_MR1 = 27;

        public VERSION_CODES() {
            throw new RuntimeException("Stub!");
        }
    }

    public static class VERSION {
        public static final String BASE_OS = null;
        public static final String CODENAME = null;
        public static final String INCREMENTAL = null;
        public static final int PREVIEW_SDK_INT = 0;
        public static final String RELEASE = null;
        /** @deprecated */
        @Deprecated
        public static final String SDK = null;
        public static final int SDK_INT = 0;
        public static final String SECURITY_PATCH = null;

        public VERSION() {
            throw new RuntimeException("Stub!");
        }
    }
}