有时候需要判断手机系统的ROM，检测ROM是MIUI、EMUI还是Flyme，可以使用getprop命令，去系统build.prop文件查找是否有对应属性来判断是什么ROM。build.prop的介绍可以看Android build.prop简介

1. 小米

小米官方文档：如何识别小米设备/MIUI系统
判断小米设备
Build.MANUFACTURER是否为Xiaomi
查询build.prop是否有ro.miui.ui.version.name属性
ps:Build.MODEL是机器型号，小米2是MI 2
判断MIUI版本
ro.miui.ui.version.name返回V5表示是MIUI V5系统，V6表示MIUI V6系统

2. 华为

查询build.prop是否有ro.build.version.emui属性

3. OPPO

查询build.prop是否有ro.build.version.opporom属性

4. VIVO

查询build.prop是否有ro.vivo.os.version属性

5. 锤子

查询build.prop是否有ro.smartisan.version属性

6. 魅族

Build.DISPLAY是否包含“FLYME”字符串

7. 360

Build.MANUFACTURER为“QIKU”或“360”

8. 乐视

待测试。。。

如果官方没有给出用哪个属性判断，就要自己来决定了，一般系统ROM登记都有一个内部版本号，是个不错的选择，例如小米ro.miui.ui.version.code，华为ro.build.hw_emui_api_level

附代码：

public class Rom {

    private static final String TAG = "Rom";

    public static final String ROM_MIUI = "MIUI";
    public static final String ROM_EMUI = "EMUI";
    public static final String ROM_FLYME = "FLYME";
    public static final String ROM_OPPO = "OPPO";
    public static final String ROM_SMARTISAN = "SMARTISAN";
    public static final String ROM_VIVO = "VIVO";
    public static final String ROM_QIKU = "QIKU";

    private static final String KEY_VERSION_MIUI = "ro.miui.ui.version.name";
    private static final String KEY_VERSION_EMUI = "ro.build.version.emui";
    private static final String KEY_VERSION_OPPO = "ro.build.version.opporom";
    private static final String KEY_VERSION_SMARTISAN = "ro.smartisan.version";
    private static final String KEY_VERSION_VIVO = "ro.vivo.os.version";

    private static String sName;
    private static String sVersion;

    public static boolean isEmui() {
        return check(ROM_EMUI);
    }

    public static boolean isMiui() {
        return check(ROM_MIUI);
    }

    public static boolean isVivo() {
        return check(ROM_VIVO);
    }

    public static boolean isOppo() {
        return check(ROM_OPPO);
    }

    public static boolean isFlyme() {
        return check(ROM_FLYME);
    }

    public static boolean is360() {
        return check(ROM_QIKU) || check("360");
    }

    public static boolean isSmartisan() {
        return check(ROM_SMARTISAN);
    }

    public static String getName() {
        if (sName == null) {
            check("");
        }
        return sName;
    }
    
    public static String getVersion() {
        if (sVersion == null) {
            check("");
        }
        return sVersion;
    }

    public static boolean check(String rom) {
        if (sName != null) {
            return sName.equals(rom);
        }

        if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_MIUI))) {
            sName = ROM_MIUI;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_EMUI))) {
            sName = ROM_EMUI;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_OPPO))) {
            sName = ROM_OPPO;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_VIVO))) {
            sName = ROM_VIVO;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_SMARTISAN))) {
            sName = ROM_SMARTISAN;
        } else {
            sVersion = Build.DISPLAY;
            if (sVersion.toUpperCase().contains(ROM_FLYME)) {
                sName = ROM_FLYME;
            } else {
                sVersion = Build.UNKNOWN;
                sName = Build.MANUFACTURER.toUpperCase();
            }
        }
        return sName.equals(rom);
    }

    public static String getProp(String name) {
        String line = null;
        BufferedReader input = null;
        try {
            Process p = Runtime.getRuntime().exec("getprop " + name);
            input = new BufferedReader(new InputStreamReader(p.getInputStream()), 1024);
            line = input.readLine();
            input.close();
        } catch (IOException ex) {
            Log.e(TAG, "Unable to read prop " + name, ex);
            return null;
        } finally {
            if (input != null) {
                try {
                    input.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return line;
    }
}