If instead the requirements of an application can be specified by intent filters, an implicit intent can be used. To activate a particular component of the application, an intent naming the component explicitly is used. When the secondary activity ends, the main activity is brought to the foreground and resumed. This causes the main activity to pause while the secondary activity is active. This activity can launch another activity, usually after a trigger event.

The main activity, as defined in the AndroidManifest XML file, is started when the application is started.

A notepad can have three activities: view a list of notes, read a selected note, and edit a selected or new note. For example, a game can have two activities: a high scores screen and a game screen.

Hence, there is often a need to deal with multiple activities. Android Developer's Cookbook, The: Building Applications with the Android SDK: Building Applications with the Android SDKĮven the simplest applications have more than one functionality.

Log android studio extnd