小编Eri*_*ric的帖子

我正在开发一个NFC环境,包括一个标签(AS3953芯片+微控制器)和一个智能手机(三星Galaxy Fame runnung Android 4.1.2).

在阅读NDEF消息时,我仍然坚持将消息写入标签.我从http://tapintonfc.blogspot.de/2012/07/the-above-footage-from-our-nfc-workshop.html复制了大部分代码, 并通过搜索标签技术列表将其修改为接受ISO14443A标签类型4对于支持技术()中的IsoDep,NfcA和Ndef.由于列出了所有这些,app继续writeTag():

public WriteResponse writeTag(NdefMessage message, Tag tag) {
try {
    Ndef ndef = Ndef.get(tag);
    if (ndef != null) {
        Log.d(TAG, "writeTag: tag type: "+ndef.getType());
        ndef.connect();
        Log.d(TAG, "writeTag: connected!");
        if (!ndef.isWritable()) {
            return new WriteResponse(0, "Tag is read-only");
        }
        if (ndef.getMaxSize() < message.toByteArray().length) {
            return new WriteResponse(0, "size error");
        }
        Log.d(TAG, "writeTag: write ndef...");
        ndef.writeNdefMessage(message);
        Log.d(TAG, "writeTag: wrote ndef!");
        if (writeProtect)
            ndef.makeReadOnly();
        return new WriteResponse(1, "Wrote message to pre-formatted tag.");
    } else { …