(22) Task

First, the basic concept of task

1, Task: mission stack, only for the activity, the stack contains a lot of activity, is an advanced linked list, record maintenance of the current open activity. In general, after the application starts, an activity is run, and the activity object is pushed into the stack and the activity is destroyed, removing the activity from the top of the task stack. The application interface always shows the elements at the top of the stack. Call the Finish () method and the activity is destroyed.

2. An important function of the task stack: all activities in a task are organized into the same unit to maintain the user's interface (activity) experience

Ii. the relationship between activity and task

Third, the use of dialog-style activity

(22) Task