检测Rom类型(RomUtil)

由于 Android 机型繁多，存在着各种定制的ROM，所以在开发应用的过程中，时常需要针对不同的ROM进行适配。

对于深度定制的ROM通常检查/system/build.prop文件中的某些自定义字段(比如ROM版本名)是否存在来判断ROM类型。

对于未深度定制的系统，可能没有明显的自定义字段，这时直接用 Build.MANUFACTURER 来判断。

代码如下

• 检查是否某类型ROM RomUtil.isXXX(), RomUtil.check(romName)
• 获取 ROM 名称 RomUtil.getName()
• 获取 ROM 版本名 RomUtil.getVersion()

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

    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_QIHU = "QIHU";

    public static final String ROM_LENOVO = "LENOVO";
    public static final String ROM_SAMSUNG = "SAMSUNG";

    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 final String KEY_VERSION_GIONEE = "ro.gn.sv.version";
    private static final String KEY_VERSION_LENOVO = "ro.lenovo.lvp.version"; 

    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 isQihu() {
        return check(ROM_QIHU);
    }

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

    private static String sName;
    public static String getName() {
        if (sName == null) {
            check("");
        }
        return sName;
    }
    private static String sVersion;
    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;
    }
    //    private static Properties props = new Properties();
    //    static {
    //        try {
    //            props.load(new FileInputStream(new File("/system/build.prop")));
    //        } catch (IOException e) {
    //
    //        }
    //    }
    //    public static String getProp(String name) {
    //        return props.getProperty(name, Build.UNKNOWN);
    //    }
}