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sShrimPs
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2 changes: 1 addition & 1 deletion
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...m/example/dice/ExampleInstrumentedTest.kt → .../com/dice/dice/ExampleInstrumentedTest.kt
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...ain/java/com/example/dice/SubActivity4.kt → ...n/kotlin/com/example/dice/SubActivity4.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| package com.example.dice | ||
|
|
||
| import android.app.PendingIntent | ||
| import android.content.Intent | ||
| import android.content.IntentFilter | ||
| import android.nfc.NfcAdapter | ||
| import android.nfc.Tag | ||
| import android.nfc.TagLostException | ||
| import android.nfc.tech.MifareClassic | ||
| import android.os.Build | ||
| import android.os.Bundle | ||
| import android.provider.Settings | ||
| import android.util.Log | ||
| import android.widget.Toast | ||
| import androidx.appcompat.app.AppCompatActivity | ||
| import kotlinx.android.synthetic.main.activity_cardread.* | ||
|
|
||
| class cardread : AppCompatActivity(), NfcAdapter.ReaderCallback { | ||
|
|
||
| private var nfcAdapter: NfcAdapter? = null | ||
| var uid:String = "" | ||
|
|
||
| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| setContentView(R.layout.activity_cardread) | ||
|
|
||
| nfcAdapter = NfcAdapter.getDefaultAdapter(this) ?: run { | ||
| Toast.makeText(this, "이 장치는 nfc를 지원하지 않습니다.", Toast.LENGTH_LONG).show() | ||
| finish() | ||
| return | ||
| } | ||
|
|
||
| if (!nfcAdapter?.isEnabled!!) { | ||
| Toast.makeText(this, "NFC가 활성화 되어 있지 않습니다.", Toast.LENGTH_SHORT).show() | ||
| enableNfcSetting() | ||
| } else { | ||
| Toast.makeText(this, "NFC가 활성화 되었습니다.", Toast.LENGTH_SHORT).show() | ||
| } | ||
|
|
||
| returnbtn.setOnClickListener { | ||
| val intents = Intent(this, SubActivity5::class.java) | ||
| intent.apply { | ||
| this.putExtra("uid", uid) | ||
| } | ||
| startActivity(intents) | ||
| } | ||
| } | ||
|
|
||
| private fun enableNfcSetting() { | ||
| // NFC 설정 화면으로 이동하는 인텐트 생성 | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { | ||
| startActivity(Intent(Settings.Panel.ACTION_NFC)) | ||
| } else { | ||
| startActivity(Intent(Settings.ACTION_NFC_SETTINGS)) | ||
| } | ||
| } | ||
|
|
||
| override fun onResume() { | ||
| super.onResume() | ||
| nfcAdapter?.let { | ||
| val techList = arrayOf(arrayOf(MifareClassic::class.java.name)) | ||
| it.enableReaderMode(this, this, NfcAdapter.FLAG_READER_NFC_A or NfcAdapter.FLAG_READER_NFC_B or NfcAdapter.FLAG_READER_NFC_F or NfcAdapter.FLAG_READER_NFC_V, null) | ||
| } | ||
| } | ||
|
|
||
| override fun onPause() { | ||
| super.onPause() | ||
| nfcAdapter?.disableReaderMode(this) | ||
| } | ||
| override fun onTagDiscovered(tag: Tag?) { | ||
| try { | ||
| val mifareClassic = MifareClassic.get(tag) | ||
| mifareClassic?.let { | ||
| if (!it.isConnected) { | ||
| it.connect() | ||
| } | ||
| val sectorCount = it.sectorCount | ||
| for (i in 0 until sectorCount) { | ||
| val auth = it.authenticateSectorWithKeyA(i, MifareClassic.KEY_DEFAULT) | ||
| if (auth) { | ||
| val blockCount = it.getBlockCountInSector(i) | ||
| for (j in 0 until blockCount) { | ||
| val blockIndex = it.sectorToBlock(i) + j | ||
| val data = it.readBlock(blockIndex) | ||
| Log.d("결과", "Sector $i, Block $j, Data: ${bytesToHexString(data)}") | ||
| } | ||
| } | ||
| } | ||
| uid = bytesToHexString(it.tag.id) | ||
| it.close() | ||
| runOnUiThread { | ||
| Toast.makeText(this, "UID: $uid", Toast.LENGTH_LONG).show() | ||
| taguidTextView.setText(uid) | ||
| Log.d("uid", "UID IS $uid") | ||
| } | ||
| } ?: run { | ||
| Log.d("결과", "Tag is null") | ||
| runOnUiThread { | ||
| Toast.makeText(this@cardread, "카드를 다시 접촉해주세요.", Toast.LENGTH_SHORT).show() | ||
| } | ||
|
|
||
| } | ||
| } catch (e: TagLostException) { | ||
| runOnUiThread { | ||
| Toast.makeText(this@cardread, "카드를 다시 접촉해주세요.", Toast.LENGTH_SHORT).show() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private fun bytesToHexString(bytes: ByteArray?): String { | ||
| if (bytes == null) { | ||
| return "" | ||
| } | ||
| val builder = StringBuilder() | ||
| for (b in bytes) { | ||
| builder.append(String.format("%02x", b)) | ||
| } | ||
| return builder.toString() | ||
| } | ||
| } |
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