Introduction - If you have any usage issues, please Google them yourself
Check the upgrade MD5 check zip download files to achieve the idea is to automatically detect updates the server zip package, if there is a new version, then download the update immediately. During the use of MD5 to verify the integrity of the compression package, the update is completed immediately after decompression to the definition of the folder. Slightly modified, can be changed to upgrade APK applications, and other functions to update the image of advertising. Download a file the network, often in the use of the need to verify the integrity of the file before the full validity of the MD5 code generation tools, it is very practical. A into the server-side message, the other one in code using MD5 test, a comparison on the two sides, if the generated string, then can be shown to file is complete.