best virus protection for android

();MessageDigest msgDigest = null;try {msgDigest = MessageDigest.getInstance("SHA-1");byte[] bytes = new byte[1024];int byteCount;FileInputStream fis = new FileInputStream(new File(apkPath)); while ((byteCount = fis.read(bytes)) > 0){msgDigest.update(bytes, 0, byteCount);} BigInteger bi = new BigInteger(1, msgDigest.digest());String sha = bi.toString(16);fis.close();//这里添加从服务器中获取哈希值然后进行对比校验} catch (Exception e) {e.printStackTrace();}}} (2) Use the Linux sha1sum command to calculate the h

information obtained by the above code is actually a long string, which can be MD5 encrypted and encrypted into a 32-bit string format for more efficient signature information. In addition, I see in the process of information, I saw some of the data mentioned in the package signed Hashcode value to do the comparison, this way is simpler, but I did not use this way, I always feel that this way may not be accurate, just a person feel that interested students can read more relevant information. It

Activity Site Protection @Override protectedvoid onsaveinstancestate (Bundle outstate) { // Save Data Super . Onsaveinstancestate (outstate); } @Override protectedvoid onrestoreinstancestate (Bundle savedinstancestate) { // Recovering data Super . Onrestoreinstancestate (savedinstancestate); }Note: because Onsaveinstancestate () is not guaranteed to be called every time, you should only use it to recor

startup greatly reduce the startup speed, In addition, You Cannot uninstall the system software. This situation cannot be attributed to malware, Of course, you can't just lick your face and say it's for the sake of users. As a result, some rogue software is quietly connected to the Internet in the background, and a large number of users complain that their mobile phones will inevitably increase a large amount of Internet fees. However, system applications Cannot uninstall these software, result

In contrast to Android, the outlook is good, but it seems to me that the market is a bit messy. Applications that are good, almost, or even self-interested are all mixed in the Android app market, recently, I saw on the Internet Lenovo app security detection and research team expose the virus code analysis for the two Android