Working with Dialogs: The Legacy Method

An Activity can use dialogs to organize information and react to user-driven events. For example, an activity might display a dialog informing the user of a problem or asking the user to confirm an action such as deleting a data record. Using dialogs for simple tasks helps keep the number of application activities manageable.

Tracing the Lifecycle of a Dialog

Each Dialog must be defined within the Activity in which it is used. A Dialog may be launched once, or used repeatedly. Understanding how an Activity manages the Dialog lifecycle is important to implementing a Dialog correctly. Let’s look at the key methods that an Activity must use to manage a Dialog: