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NfcAdapter.SetDiscoveryTechnology Method

  • Reference

Definition

Namespace:
Android.Nfc
Assembly:
Mono.Android.dll

Set the NFC controller to enable specific poll/listen technologies, as specified in parameters, while this Activity is in the foreground.

[Android.Runtime.Register("setDiscoveryTechnology", "(Landroid/app/Activity;II)V", "", ApiSince=35)]
public void SetDiscoveryTechnology (Android.App.Activity activity, Android.Nfc.NfcReaderFlags pollTechnology, Android.Nfc.NfcListenFlags listenTechnology);
[<Android.Runtime.Register("setDiscoveryTechnology", "(Landroid/app/Activity;II)V", "", ApiSince=35)>]
member this.SetDiscoveryTechnology : Android.App.Activity * Android.Nfc.NfcReaderFlags * Android.Nfc.NfcListenFlags -> unit

Parameters

activity
Activity

The Activity that requests NFC controller to enable specific technologies.

pollTechnology
NfcReaderFlags

Flags indicating poll technologies.

listenTechnology
NfcListenFlags

Flags indicating listen technologies.

Attributes
RegisterAttribute

Remarks

Set the NFC controller to enable specific poll/listen technologies, as specified in parameters, while this Activity is in the foreground.

Use #FLAG_READER_KEEP to keep current polling technology. Use #FLAG_LISTEN_KEEP to keep current listenig technology. (if the _KEEP flag is specified the other technology flags shouldn't be set and are quietly ignored otherwise). Use #FLAG_READER_DISABLE to disable polling. Use #FLAG_LISTEN_DISABLE to disable listening. Also refer to #resetDiscoveryTechnology(Activity) to restore these changes. </p> The pollTechnology, listenTechnology parameters can be one or several of below list.

Poll                    Listen
             Passive A         0x01   (NFC_A)           0x01  (NFC_PASSIVE_A)
             Passive B         0x02   (NFC_B)           0x02  (NFC_PASSIVE_B)
             Passive F         0x04   (NFC_F)           0x04  (NFC_PASSIVE_F)
             ISO 15693         0x08   (NFC_V)             -
             Kovio             0x10   (NFC_BARCODE)       -

Example usage in an Activity that requires to disable poll, keep current listen technologies:

protected void onResume() {
                mNfcAdapter = NfcAdapter.getDefaultAdapter(getApplicationContext());
                mNfcAdapter.setDiscoveryTechnology(this,
                    NfcAdapter.FLAG_READER_DISABLE, NfcAdapter.FLAG_LISTEN_KEEP);
            }

</p>

Java documentation for android.nfc.NfcAdapter.setDiscoveryTechnology(android.app.Activity, int, int).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to