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Near-Field Communication, also known as short-range wireless communication, is a short-range high-frequency wireless communication technology that allows non-contact point-to-point data transmission and data exchange between electronic devices.
NFC Definition
Near-Field Communication (
English:Near Field Communication ,
NFC ), Also known
Short-range wireless communication It is a short-distance high-frequency wireless communicat
Preparation of the Android NFC near-field communication----Read-write card because the company picked up a project that sounded more like NB. To a system for the field of labor. And by the small woman responsible for the development of the Androidclient ~ ~ When the Android device development when the look is relati
TextView*/void Processintent (Intent Intent) {TextView = (TextView) Findviewbyid (R.id.textview);parcelable[] Rawmsgs = Intent.getparcelablearrayextra (Nfcadapter.extra_ndef_messages);Only one message sent during the beamNdefmessage msg = (ndefmessage) rawmsgs[0];Record 0 contains the MIME type, record 1 is the AAR, if presentTextview.settext (New String (Msg.getrecords () [0].getpayload ()));}}Note: The above code has commented out the AAR, and you can delete it. If you enable AAR, the applica
needed:Intentfilter ndef =newintentfilter (nfcadapter.action_ndef_discovered);try{Ndef.adddatatype ("*/*"); /* Handles all MIME based dispatches.You should specify only the ones so you need. */}catch (Malformedmimetypeexception e) {Thrownewruntimeexception ("fail", e);}Intentfiltersarray =newintentfilter[]{ndef,}; C. Create an array of NFC tag technologies that the application wants to process. Call the Object.class.getName () method to get the class of the technology you want to support:Te
Tnf_absolute_uri
URI based on the Type field
Tnf_empty
Intent object that is degraded to the action_tech_discovered type
Tnf_external_type
Based on the URI of the urn in the Type field? Urn is the shortened format (
Tnf_mime_media
MIME type based on Type field
Tnf_unchanged
supported by the label by calling the Gettechlist () method.For example, if the scanned labels support mifareclassic, ndefformatable, and NFCA, then to match them, the Tech-list collection must specify all of these three techniques, or specify two or both.The following example defines all of the relevant technologies. You can remove some of these settings as needed. Then save the file to the You can also specify multiple tech-list collections, each Tech-list collection is considered independent
Near-Field Communication (NFC) is a set of short-range wireless technologies. It usually requires a distance of 4 cm or shorter to initialize the connection. NFC allows users to share small data loads between NFC tags and Android devices or between two Android devices.
NFC tags have complex classifications. Simple NFC tags only provide read and write syntaxes. I
Near-Field Communication (NFC) is a set of short-range wireless technologies. It usually requires a distance of 4 cm or shorter to initialize the connection. NFC allows users to share small data loads between NFC tags and Android devices or between two Android devices.
NFC tags have complex classifications. Simple NFC tags only provide read and write syntaxes. I
action_ndef_discovered type of intent are used to work because it is the most standard of the three intent. Compared to the other two intent, this intent allows you to launch your application at a more appropriate time, giving users a better experience.Request NFC access in Android manifestBefore you access your device's NFC hardware and properly handle NFC intent, make the following statement in the Androidmanifest.xml file:1. Declare access to the NFC hardware in the 2. The minimum SDK versio
Comparison of near-distance communication technology and near-distance communication technology
Comparison of near-distance communication technology
Compared with the traditional near-d
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