Android：获取mainfest信息

1.获取versionName,versionCode

        try {
            String version = this.getPackageManager().getPackageInfo(getPackageName(),0).versionName;
            int versionCode = this.getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
        } catch (NameNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }