Android's Activity and task

The concept of a task

A task is a stack of activities. A Task is a stack that contains a lot of activity, which follows the principle of LIFO. In one application, the activity that the user opens successively enters the task.

Look at an example: Create an Android application with three activity:activity01,activity02,activity03 in the application. Each activity has a TextView control and a button control. Clicking button in Activity01 will jump to Activity02, and clicking button in Activity02 will jump to Activity03.