判断是否为小米MIUI系统

    public static boolean isMIUI() {
        String KEY_MIUI_VERSION_CODE = "ro.miui.ui.version.code";
        String KEY_MIUI_VERSION_NAME = "ro.miui.ui.version.name";
        String KEY_MIUI_INTERNAL_STORAGE = "ro.miui.internal.storage";

        Properties prop = new Properties();
        boolean isMIUI;
        try {
            prop.load(new FileInputStream(new File(Environment.getRootDirectory(), "build.prop")));
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
        isMIUI = prop.getProperty(KEY_MIUI_VERSION_CODE, null) != null
                || prop.getProperty(KEY_MIUI_VERSION_NAME, null) != null
                || prop.getProperty(KEY_MIUI_INTERNAL_STORAGE, null) != null;
        return isMIUI;
    }