블루투스 채팅 테스트 중입니다.그런데 오류가 발생했습니다.

Question

안녕하세요.블루투스 채팅을 테스트 해보는 중이였습니다.그런데 페어링은 잘되는데 채팅을 표시를 못해주네요.오류를 찾아보면 핸들러 쪽이 크게 노란색오류가 뜨던데 도저히 뭐가뭔지 모르겠습니다.코드올려드리겠습니다. package com.example.guestapp; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.SystemClock; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import java.util.Set; import java.util.UUID; public class bluetooth extends AppCompatActivity { TextView mTvBluetoothStatus; TextView mTvReceiveData; TextView mTvSendData; Button mBtnBluetoothConnect; Button mBtnBluetoothDisconnect; Button mBtnSendData; BluetoothAdapter mBluetoothAdapter; Set mPairedDevices; List mListPairedDevices; Handler mBluetoothHandler; ConnectedBluetoothThread mThreadConnectedBluetooth; BluetoothDevice mBluetoothDevice; BluetoothSocket mBluetoothSocket; final static int BT_REQUEST_ENABLE = 1; final static int BT_MESSAGE_READ = 2; final static int BT_CONNECTING_STATUS = 3; final static UUID BT_UUID = UUID.fromString("00001105-0000-1000-8000-00805F9B34FB"); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_bluetooth); mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); mTvBluetoothStatus = (TextView)findViewById(R.id.tvBluetoothStatus); mTvReceiveData = (TextView)findViewById(R.id.tvReceiveData); mTvSendData = (EditText)findViewById(R.id.tvSendData); mBtnBluetoothConnect = (Button)findViewById(R.id.btnBluetoothConnect); mBtnBluetoothDisconnect = (Button)findViewById(R.id.btnBluetoothDisconnect); mBtnSendData = (Button)findViewById(R.id.btnSendData); mBtnBluetoothConnect.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View view) { bluetoothOn(); } }); mBtnBluetoothDisconnect.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View view) { bluetoothOff(); } }); mBtnSendData.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View view) { if(mThreadConnectedBluetooth != null) { mThreadConnectedBluetooth.write(mTvSendData.getText().toString()); mTvSendData.setText(""); } else{ Toast.makeText(getApplicationContext(),"블루투스 장치와 연결이 되어 있지 않습니다.",Toast.LENGTH_LONG).show(); } } }); mBluetoothHandler = new Handler(){ public void handleMessage(android.os.Message msg){ if(msg.what == BT_MESSAGE_READ){ String readMessage = null; try { readMessage = new String((byte[]) msg.obj, "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } mTvReceiveData.setText(readMessage); } } }; } void bluetoothOn() { if(mBluetoothAdapter == null) { Toast.makeText(getApplicationContext(), "블루투스를 지원하지 않는 기기입니다.", Toast.LENGTH_LONG).show(); } else { if (mBluetoothAdapter.isEnabled()) { //Toast.makeText(getApplicationContext(), "블루투스가 이미 활성화 되어 있습니다.", Toast.LENGTH_LONG).show(); mTvBluetoothStatus.setText("활성화"); listPairedDevices(); } else { Toast.makeText(getApplicationContext(), "블루투스가 활성화 되어 있지 않습니다.", Toast.LENGTH_LONG).show(); Intent intentBluetoothEnable = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(intentBluetoothEnable, BT_REQUEST_ENABLE); } } } void bluetoothOff() { if (mBluetoothAdapter.isEnabled()) { mBluetoothAdapter.disable(); Toast.makeText(getApplicationContext(), "블루투스가 비활성화 되었습니다.", Toast.LENGTH_SHORT).show(); mTvBluetoothStatus.setText("비활성화"); } else { Toast.makeText(getApplicationContext(), "블루투스가 이미 비활성화 되어 있습니다.", Toast.LENGTH_SHORT).show(); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case BT_REQUEST_ENABLE: if (resultCode == RESULT_OK) { // 블루투스 활성화를 확인을 클릭하였다면 Toast.makeText(getApplicationContext(), "블루투스 활성화", Toast.LENGTH_LONG).show(); mTvBluetoothStatus.setText("활성화"); listPairedDevices(); } else if (resultCode == RESULT_CANCELED) { // 블루투스 활성화를 취소를 클릭하였다면 Toast.makeText(getApplicationContext(), "취소", Toast.LENGTH_LONG).show(); mTvBluetoothStatus.setText("비활성화"); } break; } super.onActivityResult(requestCode, resultCode, data); } void listPairedDevices() { if (mBluetoothAdapter.isEnabled()) { mPairedDevices = mBluetoothAdapter.getBondedDevices(); if (mPairedDevices.size() > 0) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("장치 선택"); mListPairedDevices = new ArrayList(); for (BluetoothDevice device : mPairedDevices) { mListPairedDevices.add(device.getName()); //mListPairedDevices.add(device.getName() + " " + device.getAddress()); } final CharSequence[] items = mListPairedDevices.toArray(new CharSequence[mListPairedDevices.size()]); mListPairedDevices.toArray(new CharSequence[mListPairedDevices.size()]); builder.setItems(items, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int item) { connectSelectedDevice(items[item].toString()); } }); AlertDialog alert = builder.create(); alert.show(); } else { Toast.makeText(getApplicationContext(), "페어링된 장치가 없습니다.", Toast.LENGTH_LONG).show(); } } else { Toast.makeText(getApplicationContext(), "블루투스가 비활성화 되어 있습니다.", Toast.LENGTH_SHORT).show(); } } void connectSelectedDevice(String selectedDeviceName) { for(BluetoothDevice tempDevice : mPairedDevices) { if (selectedDeviceName.equals(tempDevice.getName())) { mBluetoothDevice = tempDevice; break; } } try { mBluetoothSocket = mBluetoothDevice.createRfcommSocketToServiceRecord(BT_UUID); mBluetoothSocket.connect(); mThreadConnectedBluetooth = new ConnectedBluetoothThread(mBluetoothSocket); mThreadConnectedBluetooth.start(); mBluetoothHandler.obtainMessage(BT_CONNECTING_STATUS, 1, -1).sendToTarget(); } catch (IOException e) { Toast.makeText(getApplicationContext(), "블루투스 연결 중 오류가 발생했습니다.", Toast.LENGTH_LONG).show(); } } private class ConnectedBluetoothThread extends Thread { private final BluetoothSocket mmSocket; private final InputStream mmInStream; private final OutputStream mmOutStream; public ConnectedBluetoothThread(BluetoothSocket socket) { mmSocket = socket; InputStream tmpIn = null; OutputStream tmpOut = null; try { tmpIn = socket.getInputStream(); tmpOut = socket.getOutputStream(); } catch (IOException e) { Toast.makeText(getApplicationContext(), "소켓 연결 중 오류가 발생했습니다.", Toast.LENGTH_LONG).show(); } mTvBluetoothStatus.setText("장치 연결됨"); mmInStream = tmpIn; mmOutStream = tmpOut; } public void run() { byte[] buffer = new byte[1024]; int bytes; while (true) { try { bytes = mmInStream.available(); if (bytes != 0) { SystemClock.sleep(100); bytes = mmInStream.available(); bytes = mmInStream.read(buffer, 0, bytes); mBluetoothHandler.obtainMessage(BT_MESSAGE_READ, bytes, -1, buffer).sendToTarget(); } } catch (IOException e) { break; } } } public void write(String str) { byte[] bytes = str.getBytes(); try { mmOutStream.write(bytes); } catch (IOException e) { Toast.makeText(getApplicationContext(), "데이터 전송 중 오류가 발생했습니다.", Toast.LENGTH_LONG).show(); } } } }mBluetoothHandler = new Handler(){ public void handleMessage(android.os.Message msg){ if(msg.what == BT_MESSAGE_READ){ String readMessage = null; try { readMessage = new String((byte[]) msg.obj, "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } mTvReceiveData.setText(readMessage); } } }; This Handler class should be static or leaks might occur (anonymous android.os.Handler) less... (Ctrl+F1) Inspection info:Since this Handler is declared as an inner class, it may prevent the outer class from being garbage collected. If the Handler is using a Looper or MessageQueue for a thread other than the main thread, then there is no issue. If the Handler is using the Looper or MessageQueue of the main thread, you need to fix your Handler declaration, as follows: Declare the Handler as a static class; In the outer class, instantiate a WeakReference to the outer class and pass this object to your Handler when you instantiate the Handler; Make all references to members of the outer class using the WeakReference object. Issue id: HandlerLeak 오류는 이런오류가 뜨는데 무슨문제일까요?

블루투스 채팅 테스트 중입니다.그런데 오류가 발생했습니다.

0개의 답변

Q&A 목록