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NFC module was added for reading / writing data from NFC Ndef tags.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,301 @@ | ||
| package com.termux.api; | ||
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| import android.app.Activity; | ||
| import android.app.AlertDialog; | ||
| import android.app.Dialog; | ||
| import android.app.PendingIntent; | ||
| import android.content.Context; | ||
| import android.content.DialogInterface; | ||
| import android.content.Intent; | ||
| import android.content.IntentFilter; | ||
| import android.nfc.NdefMessage; | ||
| import android.nfc.NdefRecord; | ||
| import android.nfc.NfcAdapter; | ||
| import android.nfc.Tag; | ||
| import android.nfc.tech.Ndef; | ||
| import android.os.Bundle; | ||
| import android.os.Parcelable; | ||
| import android.text.Layout; | ||
| import android.util.JsonWriter; | ||
| import android.util.Log; | ||
| import android.widget.LinearLayout; | ||
| import android.widget.TextView; | ||
| import android.widget.Toast; | ||
| import androidx.annotation.Nullable; | ||
| import androidx.appcompat.app.AppCompatActivity; | ||
|
|
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| import com.termux.api.util.ResultReturner; | ||
|
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|
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| public class NfcActivity extends AppCompatActivity{ | ||
| private NfcAdapter adapter; | ||
| static String socket_input; | ||
| static String socket_output; | ||
| String mode; | ||
| String param; | ||
| String value; | ||
| //Check for NFC | ||
| protected void errorNfc(final Context context, Intent intent, String error) { | ||
| ResultReturner.returnData(context, intent, new ResultReturner.ResultJsonWriter() { | ||
| @Override | ||
| public void writeJson(JsonWriter out) throws Exception { | ||
| NfcAdapter adapter = NfcAdapter.getDefaultAdapter(context); | ||
| out.beginObject(); | ||
| if (error.length() > 0) | ||
| out.name("error").value(error); | ||
| out.name("nfcPresent").value(null != adapter); | ||
| if(null!=adapter) | ||
| out.name("nfcActive").value(adapter.isEnabled()); | ||
| out.endObject(); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| @Override | ||
| protected void onCreate(@Nullable Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| Intent intent = this.getIntent(); | ||
| if (intent != null) { | ||
| mode = intent.getStringExtra("mode"); | ||
| if (null == mode) | ||
| mode = "noData"; | ||
| param =intent.getStringExtra("param"); | ||
| if (null == param) | ||
| param = "noData"; | ||
| value=intent.getStringExtra("value"); | ||
| if (null == socket_input) socket_input = intent.getStringExtra("socket_input"); | ||
| if (null == socket_output) socket_output = intent.getStringExtra("socket_output"); | ||
| if (mode == "noData") { | ||
| errorNfc(this, intent,""); | ||
| finish(); | ||
| } | ||
| } | ||
|
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| NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this); | ||
| if((null==adapter)||(!adapter.isEnabled())){ | ||
| errorNfc(this,intent,""); | ||
| finish(); | ||
| } | ||
| } | ||
|
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||
| @Override | ||
| protected void onResume() { | ||
| super.onResume(); | ||
| adapter = NfcAdapter.getDefaultAdapter(this); | ||
| Intent intentNew = new Intent(this, NfcActivity.class).addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); | ||
| PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intentNew, 0); | ||
| IntentFilter[] intentFilter = new IntentFilter[]{ | ||
| new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED), | ||
| new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), | ||
| new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED)}; | ||
| adapter.enableForegroundDispatch(this, pendingIntent, intentFilter, null); | ||
| } | ||
|
|
||
| @Override | ||
| protected void onNewIntent(Intent intent) { | ||
| intent.putExtra("socket_input", socket_input); | ||
| intent.putExtra("socket_output", socket_output); | ||
|
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||
| if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) { | ||
| try { | ||
| postResult(this, intent); | ||
| } | ||
| catch (Exception e) | ||
| { | ||
| Log.e("Termix-api.NfcAction",e.getMessage()); | ||
| } | ||
| finish(); | ||
| } | ||
| super.onNewIntent(intent); | ||
| } | ||
|
|
||
| @Override | ||
| protected void onPause() { | ||
| adapter.disableForegroundDispatch(this); | ||
| super.onPause(); | ||
| } | ||
|
|
||
| @Override | ||
| protected void onDestroy() { | ||
| socket_input = null; | ||
| socket_output = null; | ||
| super.onDestroy(); | ||
| } | ||
|
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||
| protected void postResult(final Context context, Intent intent) { | ||
| ResultReturner.returnData(context, intent, new ResultReturner.ResultJsonWriter() { | ||
| @Override | ||
| public void writeJson(JsonWriter out) throws Exception { | ||
| Log.e("NFC","postResult"); | ||
| try | ||
| { | ||
| switch (mode) { | ||
| case "write": | ||
| switch (param) { | ||
| case "text": | ||
| Log.e("NFC","-->write"); | ||
| onReceiveNfcWrite(context, intent); | ||
| Log.e("NFC","<--write"); | ||
| break; | ||
| default: | ||
| onUnexpectedAction(out, "Wrong Params", "Should be text for TAG"); | ||
| break; | ||
| } | ||
| break; | ||
| case "read": | ||
| switch (param){ | ||
| case "short": | ||
| readNDEFTag(intent,out); | ||
| break; | ||
| case "full": | ||
| readFullNDEFTag(intent,out); | ||
| break; | ||
| case "noData": | ||
| readNDEFTag(intent,out); | ||
| break; | ||
| default: | ||
| onUnexpectedAction(out, "Wrong Params", "Should be correct param value"); | ||
| break; | ||
| } | ||
| break; | ||
| default: | ||
| onUnexpectedAction(out, "Wrong Params", "Should be correct mode value "); | ||
| break; | ||
| } | ||
| } | ||
| catch (Exception e){ | ||
| onUnexpectedAction(out, "exception", e.getMessage()); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
| public void onReceiveNfcWrite( final Context context, Intent intent) throws Exception { | ||
| { | ||
| Log.e("NFC","---->onReceiveNfcWrite"); | ||
| NfcAdapter adapter = NfcAdapter.getDefaultAdapter(context); | ||
| Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); | ||
| NdefRecord record = NdefRecord.createTextRecord("en", value); | ||
| NdefMessage msg = new NdefMessage(new NdefRecord[]{record}); | ||
| Ndef ndef = Ndef.get(tag); | ||
| ndef.connect(); | ||
| ndef.writeNdefMessage(msg); | ||
| ndef.close(); | ||
| } | ||
| } | ||
|
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|
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| public void readNDEFTag(Intent intent, JsonWriter out) throws Exception { | ||
| NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this); | ||
| Parcelable[] msgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES); | ||
| Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); | ||
| Ndef ndefTag = Ndef.get(tag); | ||
| boolean bNdefPresent = false; | ||
| String strs[] = tag.getTechList(); | ||
| for (String s: strs){ | ||
| if (s.equals("android.nfc.tech.Ndef")) | ||
| bNdefPresent = true; | ||
| } | ||
| if (!bNdefPresent){ | ||
| onUnexpectedAction(out, "Wrong Technology","termux API support only NFEF Tag"); | ||
| return; | ||
| } | ||
| NdefMessage[] nmsgs = new NdefMessage[msgs.length]; | ||
| if (msgs.length == 1) { | ||
| nmsgs[0] = (NdefMessage) msgs[0]; | ||
| NdefRecord records[] = nmsgs[0].getRecords(); | ||
| out.beginObject(); | ||
| if (records.length >0 ) { | ||
| { | ||
| out.name("Record"); | ||
| if (records.length > 1) | ||
| out.beginArray(); | ||
| for (NdefRecord record: records){ | ||
| out.beginObject(); | ||
| int pos = 1 + record.getPayload()[0]; | ||
| pos = (NdefRecord.TNF_WELL_KNOWN==record.getTnf())?(int)record.getPayload()[0]+1:0; | ||
| int len = record.getPayload().length - pos; | ||
| byte msg[] = new byte[len]; | ||
| System.arraycopy(record.getPayload(), pos, msg, 0, len); | ||
| out.name("Payload").value(new String(msg)); | ||
| out.endObject(); | ||
| } | ||
| if (records.length > 1) | ||
| out.endArray(); | ||
| } | ||
| } | ||
| out.endObject(); | ||
| } | ||
| } | ||
|
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| public void readFullNDEFTag(Intent intent, JsonWriter out) throws Exception { | ||
| NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this); | ||
| Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); | ||
| Ndef ndefTag = Ndef.get(tag); | ||
| Parcelable[] msgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES); | ||
|
|
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| String strs[] = tag.getTechList(); | ||
| boolean bNdefPresent = false; | ||
| for (String s: strs){ | ||
| if (s.equals("android.nfc.tech.Ndef")) | ||
| bNdefPresent = true; | ||
| } | ||
| if (!bNdefPresent){ | ||
| onUnexpectedAction(out, "Wrong Technology","termux API support only NFEF Tag"); | ||
| return; | ||
| } | ||
| NdefMessage[] nmsgs = new NdefMessage[msgs.length]; | ||
| out.beginObject(); | ||
| { | ||
| byte[] tagID = tag.getId(); | ||
| StringBuilder sp = new StringBuilder(); | ||
| for (byte tagIDpart : tagID) { sp.append(String.format("%02x", tagIDpart)); } | ||
| out.name("id").value(sp.toString()); | ||
| out.name("typeTag").value(ndefTag.getType()); | ||
| out.name("maxSize").value(ndefTag.getMaxSize()); | ||
| out.name("techList"); | ||
| { | ||
| out.beginArray(); | ||
| String[] tlist = tag.getTechList(); | ||
| for (String str : tlist) { | ||
| out.value(str); | ||
| } | ||
| out.endArray(); | ||
| } | ||
| if (msgs.length == 1) { | ||
| Log.e("NFC", "-->> readFullNDEFTag - 06"); | ||
| nmsgs[0] = (NdefMessage) msgs[0]; | ||
| NdefRecord records[] = nmsgs[0].getRecords(); | ||
| { | ||
| out.name("record"); | ||
| if (records.length > 1) | ||
| out.beginArray(); | ||
| for (NdefRecord record : records) { | ||
| out.beginObject(); | ||
| out.name("type").value(new String(record.getType())); | ||
| out.name("tnf").value(record.getTnf()); | ||
| if (records[0].toUri() != null) out.name("URI").value(record.toUri().toString()); | ||
| out.name("mime").value(record.toMimeType()); | ||
| int pos = 1 + record.getPayload()[0]; | ||
| pos = (NdefRecord.TNF_WELL_KNOWN==record.getTnf())?(int)record.getPayload()[0]+1:0; | ||
| int len = record.getPayload().length - pos; | ||
| byte msg[] = new byte[len]; | ||
| System.arraycopy(record.getPayload(), pos, msg, 0, len); | ||
| out.name("payload").value(new String(msg)); | ||
| out.endObject(); | ||
| } | ||
| if (records.length > 1) out.endArray(); | ||
| } | ||
| } | ||
|
|
||
| } | ||
| out.endObject(); | ||
| } | ||
|
|
||
| protected void onUnexpectedAction(JsonWriter out,String error, String description) throws Exception { | ||
| out.beginObject(); | ||
| out.name("error").value(error); | ||
| out.name("description").value(description); | ||
| out.endObject(); | ||
| out.flush(); | ||
| } | ||
| } |
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