Android data Access

2. Android provides preference (config), file (files), SQLite data and several data access methods of the network
   
   
4. Sharedpreference provides a lightweight approach to data access, where the application is mostly less configuration information, which stores the data in a key-value pair in an XML configuration file with an XML file path of/data/data/< Package Name>/shared_prefs directory. It is itself an interface and does not provide the ability to write data , but instead, the edit () method is called by the Sharedpreferences internal interface to return the editor object it corresponds to. The Sharedpreferences instance cannot be created directly in the program, only the Sharedpreferences instance can be obtained through the Getsharedpreferences method provided by the context .
   
   
6. Read and write sharedpreferences for other applications:
• Get the corresponding context for other applications, using the Createpackagecontext function
• Call Context.getsharedpreferences to get the Sharedpreferences object for the response
• To write data using the Edit object

Android data Access