AN4430 datasheet(21/42 Pages) STMICROELECTRONICS

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AN4430

How to create an Android Application for ST dual memories

2.4

Setup Android Manifest file

Once the project creation first step is completed, to use NFC functionality, developer has to

configure properly the android application settings in the AndroidManifest.xml.

2.4.1

NFC permission

In order to use NFC capability, application must request the NFC permission. To do so, this

request must be specified in the manifest file by the following declaration:

2.4.2

NFC feature

Specify that the application uses NFC by adding the following declaration:

In this way, the application is known as not functional if the NFC feature is not available on

the android device.

2.4.3

Intent filtering settings

As seen in the application overview section, component can be declared to be NFC intent

handler capable. To do so, an intent filter must be declared. Actually the application

identified by com.example.myfirstnfcapp in the manifest file is composed by a single

component which is an activity. This activity known as the main activity already has an intent

filter declaration:

This intent filter is declared specifically for main activity component to let Android System to

know which activity component to start on user request.

As the application get a single activity and as NFC intent can be handled in this main activity

we may declares a new intent filter to handle NDEF message when TAG is discovered.

In case activity component has to manage every kind of NDEF message we may add the

following intent filter declaration (solution that we keep for our source code example):

<uses‐permission android:name="android.permission.NFC" />

<uses‐feature

android:name="android.hardware.nfc"

android:required="true" />

<intent‐filter>

</intent‐filter>

<intent‐filter>

</intent‐filter>

AN4430 Datasheet(PDF) 21 Page - STMicroelectronics