Introduction - If you have any usage issues, please Google them yourself
The main source data storage SharePreferences Related usage of to introduce SharePreferences android development and instances. About SharePreferences: It is based on the key values to store application configuration information, can only store basic data types. A program' s configuration file can only be used in this application, or that can only be used in the same package, and can not be used between different packages. SharedPreferences is actually using XML format data storage device in the File Explorer in DDMS/data/data// shares_prefs under.