Huawei Watch 2 NFC功能不可用?. Android Wear 2.0 [英] Huawei Watch 2 NFC FEATURE not available?. Android Wear 2.0

问题描述

简而言之:
在Huawei Watch 2上，似乎已启用并启用了 NFC ，但 NFC_FEAUTURE 却未启用，因此nfc无法正常工作.

In short:
On the Huawei Watch 2 it seems like NFC is available and enabled but NFC_FEAUTURE is not, hence nfc is not working properly.

尝试开发在Huawei Watch 2上简单读取和显示NFC标签的功能会带来一些困难:

Trying to develop the ability to simply read and display NFC tags on the Huawei Watch 2 raises some difficulties:

mNfcAdapter.enableForegroundDispatch(this,nfcPendingIntent, nfcIntentFilter, null);  

引发错误

java.lang.UnsupportedOperationException  

这意味着FEATURE_NFC不可用.
在MainActivity onCreate()中:

That implies the FEATURE_NFC is not available.
In MainActivity onCreate():

mNfcAdapter = NfcAdapter.getDefaultAdapter(this);  //NfcAdapter mNfcAdapter
if (mNfcAdapter != null) {
  // Check if device supports NFC
  Log.i("NFC","Your device supports NFC");
}
// Check if NFC is enabled
if (mNfcAdapter.isEnabled()) {
    Log.i("NFC","NFC is Enabled");
}
if (getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC)) {
// Device compatible for NFC support
   Log.i("NFC", "Device compatible for NFC support"); 
}

在控制台中显示

... I/NFC: Your device supports NFC
... I/NFC: NFC is Enabled

但不是

... I/NFC: Device compatible for NFC support

换句话说

mNfcAdapter !=null和
mNfcAdapter.isEnabled() == true但(getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC) == false

这怎么可能?

顺便说一句.我的AndroidManifest.xml:

Btw. my AndroidManifest.xml:

<uses-permission android:name="android.permission.NFC"/>
<uses-feature android:name="android.hardware.nfc" android:required="true" />

另请参见 Android NFC教程和类似的帖子 NFC Android Wear(Huawei watch 2.0)

see also Android NFC Tutorial and a similar post NFC Android wear (Huawei watch 2.0)

我做错了什么?华为Watch 2上的NFC是否被锁定或禁用?

What am I doing wrong? Is NFC on the Huawei Watch 2 somehow locked or disabled?

预先感谢您的帮助.

推荐答案

基于此文档，华为手表2支持NFC功能，并且还具有Android Wear 2.0.

Based on this documentation, NFC feature is supported in Huawei Watch 2 and it also features Android Wear 2.0.

但是，错误 java.lang.UnsupportedOperationException 表示该方法尚未由框架作者实现，因此您可以与支持团队联系以进行澄清.参见此链接.

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