Shared data between Android's multiple activity

Recently planned to do a time helper, a service monitoring schedule information. The schedule information can be set by another activity, so this involves the synchronization of the data. The information that I set up must be synchronized to the listening information.

In Java we use global variables to accomplish such tasks, and Android provides another way, called ApplicationContext. First, create a data class Myappdata inherit application, and then in the Mainifest declaration: Add android:name= to the application tag. Myappdata "It's OK. In this way, the data that needs to be shared is put into the Myappdata class, and a shared data data can be obtained using the Getapplicationcontext () method.

Shared data between Android's multiple activity