Xamarin Mobile Application Development for Android, Second Edition

Book Image

Xamarin Mobile Application Development for Android, Second Edition

Book Image

Xamarin Mobile Application Development for Android, Second Edition

Overview of this book

Xamarin Mobile Application Development for Android Second Edition

Xamarin Mobile Application Development for Android Second Edition

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

The Anatomy of an Android App

The Anatomy of an Android App

The Android platform

The application framework

The building blocks of the Android application

The Xamarin.Android Architecture

The Xamarin.Android Architecture

Getting started with Xamarin

Why Xamarin.Android?

Mono and Dalvik side by side

The Android bindings design

Development environments

Creating the Points Of Interest App

Creating the Points Of Interest App

The sample POIApp

Installing Xamarin.Android

Installing platforms and tools

Creating Android Virtual Devices

Cloning a virtual device

Speeding up the Android emulator

Creating the POI app

The Xamarin Studio IDE

The Project Options view

The Xamarin Studio layout designer

Setting the app icon and package name

The launcher activity

Running and debugging the app

Debugging with an Android device

The AndroidManifest.xml file

Adding a List View

Adding a List View

Creating the POI ListView layout

Creating POIListActivity

Creating the POI list row layout

Creating the PointOfInterest apps entity class

Populating the ListView item

Creating POIListViewAdapter

Populating row Views

Hooking up POIListViewAdapter

Consuming the web service

Adding actions to ActionBar

Defining the menu XML file

Setting menus in OnCreateOptionsMenu()

Handling selection in OnOptionsItemSelected()

Handling the ListView click event

Handling no network condition

Adding a Details View

Adding a Details View

Creating the POIDetail layout

Creating POIDetailActivity

Adding navigation to POIDetailActivity

Receiving the data in POIDetailActivity

Populating user interface widgets

Adding the save and delete actions

Adding the save and delete actions in POIService

Creating SavePOI()

Creating DeletePOI()

Adding validation

Refreshing POIListActivity

Making Your App Orientation-aware

Making Your App Orientation-aware

The Android behavior on configuration changes

Locking the Android application orientation

Dynamically requesting the orientation

Saving the activity state for configuration changes

Building the orientation-aware layout

Manually handling the orientation behavior

Designing for Multiple Screen Sizes

Designing for Multiple Screen Sizes

An introduction to Android tablets

Creating an Android tablet emulator

An introduction to fragments

Making POIApp compatible with Android tablets

Using fragments for displaying POIDetails

Using the list fragment for displaying the POI list

Creating a multi-pane layout for tablets

Updating the POIApp to support the multi-pane split layout

Working with DialogFragment

Fragments for older Android devices

Handling configuration changes with fragments

Creating Data Storage Mechanisms

Creating Data Storage Mechanisms

Data storage in Android

Using the SQLite.net ORM component

Using the Xamarin.Android NUnitLite

Implementing the caching logic to POIApp

Making POIApp Location Aware

Making POIApp Location Aware

Working with location services

Requesting location change notifications

Adding location services to POIApp

Adding map integration

Adding the Camera App Integration

Adding the Camera App Integration

Picking an integration approach

Permissions and features

Configuring the emulator

Extending the data service

Capturing an image from POIDetailFragment

Upload an image using an HTTP multipart

Publishing an App to the App Store

Publishing an App to the App Store

Preparing the application for release

Publishing a signed APK for uploading

Different app distribution options

Index

Customer Reviews

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Data storage in Android

Android supports several solutions that can be used for persisting data locally. The persisted data can be accessible even when the application shuts down or when a device restarts. The examples of such data include the device settings, contacts list, browser bookmarks, or any such app-specific data.

The following table depicts the different data storage options available in the Android platform:

Storage options	Description
Shared preferences	This is the private data storage for your application that persists primitive key-value data pairs only. When the user uninstalls the application, this data is removed.
Internal storage	This stores data in the device internal memory and is available until the app is uninstalled from the device. This data is private to your application and other apps cannot access it.
External file storage	This stores data in shared external storage such as an external SD card. The data stored is public. Other applications or users can...