『ANDROID』Android APIs 简介

1.    FragmentActivity

Base class for activities that want to use the support-based Fragment and Loader APIs.

When using this class as opposed to new platform's built-in fragment and loader support, you must use the getSupportFragmentManager() and getSupportLoaderManager() methods respectively to access those features.

Note: If you want to implement an activity that includes an action bar, you should instead use the ActionBarActivity class,which is a subclass of this one, so allows you to use Fragment APIs on API level 7 and higher.

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