获取程序的签名

1. /*?
2. ?*?获取程序的签名??
3. ?*/??
4. public?String?getAppSignature(String?packname){??
5. ??????try?{??
6. ??????????PackageInfo?packinfo?=pm.getPackageInfo(packname,?PackageManager.GET_SIGNATURES);??
7. ??????????//获取到所有的权限???
8. ??????????return?packinfo.signatures[0].toCharsString();??
9. ??
10. ????????}?catch?(NameNotFoundException?e)?{??
11. ????????????e.printStackTrace();??
12. ????????????return?null;??
13. ????????}??
14. } ?