Android installation package OTA upgrade method with mixed codes

The invention discloses an Android installation package OTA upgrade method with mixed codes. The method comprises the following steps of construction of server catalog framework, and OTA upgrade which comprises the following sub-steps: 11, a client sends current version information to a server; 12, the server finds the Android installation package with the latest version in local, and decompiles the found installation package, thus acquiring a decompiled file; 13, an Smali file is found from the decompiled file; 14, the Smali file is remixed according to a rule of a dictionary corresponding to the current version of the client; 15, a differential package is acquired and sent to the client; and 16, the client receives the differential package sent by the server for upgrading. According to the upgrade method provided by the invention, the dictionaries with two versions are unified, data size of the differential package is greatly reduced, and downloading time and upgrading time are saved. 本发明公开了种代码添加混淆的安卓安装包OTA