NFC NDEF关于IOS编码的写作 [英] NFC NDEF writing on IOS Encoding
问题描述
我正在开发一款可读写NFC标签的Flutter应用程序.在Android上运行正常.现在,我正在努力在IOS上实现NFC编写.
I am working on a flutter app which reads and writes to NFC-tags. On Android it works just fine. Now I am working on implementing NFC-writing on IOS since it is now available.
我确实获得了将文本记录写入标签的应用程序.但是不知何故,它是以UTF16编写的,这使事情分崩离析.
I do get the app to write a text-record to the tag. But somehow it is written in UTF16 which makes things break apart.
如何使用UTF-8编码的字符串创建NFCNDEFPayload.wellKnownTypeTextPayload?
How do I create NFCNDEFPayload.wellKnownTypeTextPayload with a string that is UTF-8 encoded??
推荐答案
您已掌握了大部分方法.这是一个完整的工作示例,它修复了几处问题(特别是缺少类型"说明符和语言环境的使用):
You got most of the way there. Here's a full working example which fixes a couple things (specifically missing 'type' specifier and locale usage):
var payloadData = Data([0x02,0x65,0x6E]) // 0x02 + 'en' = Locale Specifier
payloadData.append("Text To Write".data(using: .utf8)!)
let payload = NFCNDEFPayload.init(
format: NFCTypeNameFormat.nfcWellKnown,
type: "T".data(using: .utf8)!,
identifier: Data.init(count: 0),
payload: payloadData,
chunkSize: 0)
请注意,这会将语言环境设置为'en'.
Note that this sets the locale to 'en'.
我已经在iPhone和Android上测试了使用此代码创建的标签,并且看起来工作正常.
I've tested tags created with this code on both iPhone and Android, and it seems to be working fine.
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