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Near Field Communication with Android Cookbook

By : Vitor Subtil
Book Image

Near Field Communication with Android Cookbook

By: Vitor Subtil

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Near Field Communication with Android Cookbook
Vitor Subtil
Jun, 2014 | 286 pages
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Table of Contents (17 chapters)
Near Field Communication with Android Cookbook
Near Field Communication with Android Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Getting Started with NFC
Getting Started with NFC
Introduction
Requesting NFC permissions
Indicating that your app uses NFC
Defining minimal requirements
Verifying whether the device has an NFC adapter
Downloading Open NFC Android Edition
Downloading Open NFC SDK Edition
Configuring the Open NFC Android add-on into your Android SDK
Configuring an NFC-enabled testing AVD
Configuring the Connection Center tool
Testing your app all together
2
Detecting a Tag
Detecting a Tag
Introduction
Understanding the foreground dispatch system
Understanding the tag dispatch system
Verifying if your app started because of an NFC intent
Filtering tags by their content type
Filtering tags by their content type programmatically
Filtering tags by their technology
Filtering tags by their technology using programs
Filtering URI tags
3
Writing Tag Content
Writing Tag Content
Introduction
Working with the NDEF record
Writing a URI-formatted record
Writing a text-formatted record
Using Android Application Record
Working with external types
Working with custom mimes
4
Writing Tag Content – Real-life Examples
Writing Tag Content – Real-life Examples
Introduction
Making a phone call with one tap – Part 1
Sending a predefined SMS – Part 1
Visiting our website
Leaving a (small) note – Part 1
5
Reading Tag Content
Reading Tag Content
Introduction
Obtaining NDEF Message from Intent
Getting the data out of the message
Reading a text-formatted record
Reading a URI-formatted record
Reading external types
Reading custom mimes
6
Reading Tag Content – Real-life Examples
Reading Tag Content – Real-life Examples
Introduction
Making a phone call with one tap – Part 2
Sending a predefined SMS – Part 2
Leaving a (small) note – Part 2
Getting the tag information
7
Sharing Content across Devices
Sharing Content across Devices
Introduction
Creating a basic peer-to-peer Hello World application
Sending texts to other devices
Sending a friend invite on Facebook
Inviting a friend to play a game – Part 1
8
Error Handling and Content Validation
Error Handling and Content Validation
Introduction
Handling tag-writing errors
Handling tag-reading errors
Testing the tag data for integrity
9
Extending NFC
Extending NFC
Introduction
Turning other adapters on/off
Configuring a Wi-Fi network
Starting a Wi-Fi hotspot
Inviting a friend to play a game – Part 2
Controlling hotel room access with Arduino and NFC – Part 1
Controlling hotel room access with Arduino and NFC – Part 2
10
Real-life Examples – NFC Utilities
Real-life Examples – NFC Utilities
Introduction
Creating multi-action tags
Choosing the best format for our data
Locking tags
Joking with a friend
Index
Index

Writing a text-formatted record

As we saw in the Working with the NDEF record recipe, we can write different tag content formats. In this recipe, we will see how to store text in a tag.

How to do it...

We are going to create an application that creates and writes a text-formatted record to a tag:

  1. Open Eclipse and create a new Android application project named NfcBookCh3Example3 with the package name nfcbook.ch3.example3.

  2. Make sure the AndroidManifest.xml file is configured correctly (refer to the Requesting NFC permissions recipe from Chapter 1, Getting Started with NFC).

  3. Make sure the foreground dispatch system is enabled (refer to the Understanding the foreground dispatch system recipe from Chapter 2, Detecting a Tag).

  4. Open the MainActivity.java file located under nfcbook.ch3.example3 and add the following class member: 

    private NfcAdapter nfcAdapter;

  5. Instantiate the nfcAdapter class field in the onCreate method: 

    protected void onCreate(Bundle savedInstanceState) { 
... 
nfcAdapter = NfcAdapter...
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