book

Android Fragments

by Dave MacLean, Satya Komatineni

November 2014

Beginner to intermediate

140 pages

3h 18m

English

Apress

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What Is a Fragment?When to Use FragmentsThe Structure of a FragmentA Fragment’s Life CycleSample Fragment App Showing the Life CycleFragmentTransactions and the Fragment Back StackFragment Transaction Transitions and AnimationsThe FragmentManagerCaution When Referencing FragmentsSaving Fragment StateListFragments and <fragment>Invoking a Separate Activity When NeededPersistence of FragmentsCommunications with FragmentsUsing startActivity() and setTargetFragment()ReferencesSummary
The Default Configuration Change ProcessThe Destroy/Create Cycle of ActivitiesThe Destroy/Create Cycle of FragmentsUsing FragmentManager to Save Fragment StateUsing setRetainInstance on a FragmentDeprecated Configuration Change MethodsHandling Configuration Changes YourselfReferencesSummary
Using Dialogs in AndroidUnderstanding Dialog FragmentsDialogFragment BasicsDialogFragment Sample ApplicationWorking with ToastReferencesSummary
Exploring the Preferences FrameworkUnderstanding CheckBoxPreference and SwitchPreferenceAccessing a Preference Value in CodeUnderstanding ListPreferenceUnderstanding EditTextPreferenceUnderstanding MultiSelectListPreferenceUpdating AndroidManifest.xmlUsing PreferenceCategoryCreating Child Preferences with DependencyPreferences with HeadersPreferenceScreensDynamic Preference Summary TextSaving State with PreferencesUsing DialogPreferenceReferenceSummary
It All Started with TabletsAdding the Library to Your ProjectIncluding the v7 Support LibraryIncluding the v8 Support LibraryIncluding the v13 Support LibraryIncluding Just the v4 Support LibraryRetrofitting an App with the Android Support LibraryReferencesSummary
Introducing the AsyncTaskImplementing a Simple AsyncTaskImplementing Your First AsyncTaskCalling an AsyncTaskUnderstanding the onPreExecute() Callback and Progress DialogUnderstanding the doInBackground() MethodTriggering onProgressUpdate() through publishProgress()Understanding the onPostExecute() MethodUpgrading to a Deterministic Progress DialogAsyncTask and Thread PoolsIssues and Solutions for Correctly Showing the Progress of an AsyncTaskDealing with Activity Pointers and Device RotationDealing with Managed DialogsTesting Scenarios for a Well-Behaved Progress DialogUsing a Retained Fragment and a Progress DialogExploring Key Code SnippetsReferencesSummary

Overview

Android Fragments is a 100-page quick start accelerated guide to learning and quickly using Android fragments. You'll learn how to code for fragments; deal with config changes; code for regular vs. fragmented dialogs; work with preferences and saving state; work with the compatibility library; and handle advanced async tasks and progress dialogs.

After reading and using this book, which is based on material from the best-selling Pro Android, you'll be an Android UI savant. At the very least, your apps' user interfaces and event handling will be more competitive and better performing, especially for tablet-optimized UIs and events.