我也一直试图让它通过 NFC 工作。我在我的 Nexus 4 (KitKat) 上安装了一个简单的应用程序,其中包含一个活动:
@Override
protected void onResume() {
super.onResume();
try {
Properties properties = new Properties();
properties.setProperty(DevicePolicyManager.EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_NAME, "com.deviceowner.app");
properties.setProperty(DevicePolicyManager.EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION, "https://docs.google.com/uc?export=download&id=........");
properties.setProperty(DevicePolicyManager.EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM, "6ee735dfb8090ab1862fecce430864e21a0e37");
properties.setProperty(DevicePolicyManager.EXTRA_PROVISIONING_WIFI_SSID, "wlan");
properties.setProperty(DevicePolicyManager.EXTRA_PROVISIONING_WIFI_PASSWORD, "XXXXXX");
properties.setProperty(DevicePolicyManager.EXTRA_PROVISIONING_WIFI_SECURITY_TYPE, "WPA2");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(bos);
out.writeObject(properties);
byte[] yourBytes = bos.toByteArray();
NdefRecord ndefRecord = NdefRecord.createMime(DevicePolicyManager.MIME_TYPE_PROVISIONING_NFC, yourBytes);
NdefMessage msg = new NdefMessage(ndefRecord);
nfcAdapter.setNdefPushMessage(msg, this);
} catch (IOException e) {
e.printStackTrace();
}
}
我用 Lollipop 预览图像 (razor-lpx13d-preview-ae4f461f.tgz) 刷新了我的 Nexus 7,并在 Nexus 7 未配置时(没有设置 - 刷新后新鲜)给它与 Nexus 4 的 NFC 碰撞并得到同样的错误信息:
哎呀!无法设置您的设备。请联系您的 IT 部门。
然后我尝试了同样的事情,但这次是在 Nexus 7 上运行了初始设备设置之后(直到我可以看到主屏幕)。这次我收到了消息
哎呀!此设备已设置
但是这一次,我能够看到一些日志记录,因为我能够在 Nexus 7 上设置 USB 调试:
10-22 10:31:29.947 2610-2610/? D/NfcService﹕ LLCP Activation message
10-22 10:31:29.947 2610-2610/? I/NfcP2pLinkManager﹕ LLCP activated
10-22 10:31:29.947 2610-2610/? D/NfcP2pLinkManager﹕ onP2pInRange()
10-22 10:31:29.954 2610-2610/? W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
10-22 10:31:29.962 184-547/? D/audio_hw_primary﹕ select_devices: out_snd_device(2: speaker) in_snd_device(0: none)
10-22 10:31:29.962 184-547/? D/ACDB-LOADER﹕ ACDB -> send_afe_cal
10-22 10:31:29.962 184-547/? D/audio_hw_primary﹕ enable_snd_device: snd_device(2: speaker)
10-22 10:31:29.974 184-547/? D/audio_hw_primary﹕ enable_audio_route: apply and update mixer path: low-latency-playback
10-22 10:31:29.981 2610-2610/? D/NfcP2pLinkManager﹕ Last registered callback is not running in the foreground.
10-22 10:31:29.987 2610-2610/? D/NfcP2pLinkManager﹕ Disabling default Beam behavior
10-22 10:31:29.987 2610-2610/? D/NfcP2pLinkManager﹕ mMessageToSend = null
10-22 10:31:29.987 2610-2610/? D/NfcP2pLinkManager﹕ mUrisToSend = null
10-22 10:31:29.996 2610-2610/? D/NfcP2pLinkManager﹕ Took 48 to get first LLCP PDU
10-22 10:31:30.599 3224-3224/? I/wpa_supplicant﹕ wlan0: CTRL-EVENT-SCAN-STARTED
10-22 10:31:31.741 2610-2610/? D/NfcP2pLinkManager﹕ onP2pReceiveComplete()
10-22 10:31:31.751 2610-2610/? D/NfcService﹕ mock NDEF tag, starting corresponding activity
10-22 10:31:31.751 2610-2610/? D/NfcService﹕ TAG: Tech [android.nfc.tech.Ndef]
10-22 10:31:31.757 2610-3275/? W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
10-22 10:31:31.770 549-2765/? I/ActivityManager﹕ START u0 {flg=0x10008000 cmp=com.android.nfc/.NfcRootActivity (has extras)} from uid 1027 on display 0
10-22 10:31:31.795 7237-7237/? D/ManagedProvisioning﹕ Device owner provisioning activity ONDESTROY
10-22 10:31:31.827 2610-3275/? W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
10-22 10:31:31.848 549-2335/? I/ActivityManager﹕ START u0 {act=android.nfc.action.NDEF_DISCOVERED typ=application/com.android.managedprovisioning cmp=com.android.managedprovisioning/.DeviceOwnerProvisioningActivity (has extras)} from uid 1027 on display 0
10-22 10:31:31.886 7237-7237/? D/ManagedProvisioning﹕ Device owner provisioning activity ONCREATE
10-22 10:31:31.887 7237-7237/? E/ManagedProvisioning﹕ Device already provisioned.
10-22 10:31:31.903 7237-7237/? D/ManagedProvisioning﹕ Device owner provisioning activity ONRESUME
10-22 10:31:32.011 549-621/? I/ActivityManager﹕ Displayed com.android.managedprovisioning/.DeviceOwnerProvisioningActivity: +149ms (total +200ms)
10-22 10:31:32.955 2610-2610/? D/NfcService﹕ LLCP Link Deactivated message. Restart polling loop.
10-22 10:31:32.955 2610-2610/? I/NfcP2pLinkManager﹕ LLCP deactivated.
10-22 10:31:32.955 2610-2610/? D/NfcP2pLinkManager﹕ Debounce timeout
10-22 10:31:32.955 2610-2610/? D/NfcP2pLinkManager﹕ onP2pOutOfRange()
因此,设备所有者 NFC 碰撞似乎只能在未配置的设备上发生。我很欣赏这不能回答您的问题,但日志输出可能会有所帮助。掌握 DeviceOwnerProvisioningActivity 的源代码肯定会有所帮助。