Android activity (activities) detailed

An activity represents a screen that contains at least one main interface screen for a processing application and can be composed of multiple fragments.

To create an activity, you need to inherit an activity class, first you need to fragment, Layout (layout), View (try) to create the UI;

Use the Setcontentview () method to create a content view, or you can use the resource ID of a layout defined in an external resource;

The activity used needs to be defined in manifest, and in the activity tag, it is necessary to include, intent-filter nodes, to specify the intent that can initiate the activity;

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Author: csdn Blog spike_king