public class MainActivity extends AppCompatActivity {
static final int REQUEST_ENABLE_BT = 10;
int mPariedDeviceCount = 0;
Set<BluetoothDevice> mDevices;
BluetoothAdapter mBluetoothAdapter;
BluetoothDevice mRemoteDevie;
BluetoothSocket mSocket = null;
OutputStream mOutputStream = null;
InputStream mInputStream = null;
Thread mWorkerThread = null;
ImageButton Cuser;
ImageButton admin;
BluetoothSPP bt;
TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
checkBluetooth();
bt = new BluetoothSPP(this);
textView = findViewById(R.id.textView);
Cuser = findViewById(R.id.userbutton);
admin = findViewById(R.id.adminbutton);
bt.setOnDataReceivedListener(new BluetoothSPP.OnDataReceivedListener() {
public void onDataReceived(byte[] data, String message) {
textView.setText(message);
}
});
Cuser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent commonUser = new Intent(getApplicationContext(), com.example.autotapingmachine.CommonUser.class);
startActivity(commonUser);
}
});
admin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent adminuser = new Intent(getApplicationContext(),Administrator.class);
startActivity(adminuser);
}
});
}
BluetoothDevice getDeviceFromBondedList(String name) {
BluetoothDevice selectedDevice = null;
for(BluetoothDevice deivce : mDevices) {
if(name.equals(deivce.getName())) {
selectedDevice = deivce;
break;
}
}
return selectedDevice;
}
void connectToSelectedDevice(String selectedDeviceName) {
mRemoteDevie = getDeviceFromBondedList(selectedDeviceName);
UUID uuid = java.util.UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");
try {
mSocket = mRemoteDevie.createInsecureRfcommSocketToServiceRecord(uuid);
mSocket.connect();
}catch(Exception e) {
Toast.makeText(getApplicationContext(), "블루투스 연결 중 오류가 발생했습니다.", Toast.LENGTH_LONG).show();
finish();
}
}
void selectDevice() {
mDevices = mBluetoothAdapter.getBondedDevices();
mPariedDeviceCount = mDevices.size();
if(mPariedDeviceCount == 0 ) {
Toast.makeText(getApplicationContext(), "페어링된 장치가 없습니다.", Toast.LENGTH_LONG).show();
finish();
}
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("블루투스 장치 선택");
List<String> listItems = new ArrayList<String>();
for(BluetoothDevice device : mDevices) {
listItems.add(device.getName());
}
listItems.add("취소");
final CharSequence[] items = listItems.toArray(new CharSequence[listItems.size()]);
listItems.toArray(new CharSequence[listItems.size()]);
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if(item == mPariedDeviceCount) {
Toast.makeText(getApplicationContext(), "연결할 장치를 선택하지 않았습니다.", Toast.LENGTH_LONG).show();
finish();
}
else {
connectToSelectedDevice(items[item].toString());
}
}
});
builder.setCancelable(false);
AlertDialog alert = builder.create();
alert.show();
}
void checkBluetooth() {
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if(mBluetoothAdapter == null ) {
Toast.makeText(getApplicationContext(), "기기가 블루투스를 지원하지 않습니다.", Toast.LENGTH_LONG).show();
finish();
}
else {
if(!mBluetoothAdapter.isEnabled()) {
Toast.makeText(getApplicationContext(), "현재 블루투스가 비활성 상태입니다.", Toast.LENGTH_LONG).show();
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
else
selectDevice();
}
}
@Override
protected void onDestroy() {
try{
mWorkerThread.interrupt();
mInputStream.close();
mSocket.close();
}catch(Exception e){}
super.onDestroy();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == BluetoothState.REQUEST_CONNECT_DEVICE) {
if (resultCode == Activity.RESULT_OK)
bt.connect(data);
}
switch(requestCode) {
case REQUEST_ENABLE_BT:
if(resultCode == RESULT_OK) {
selectDevice();
}
else if(resultCode == RESULT_CANCELED) {
Toast.makeText(getApplicationContext(), "블루투스를 사용할 수 없어 프로그램을 종료합니다", Toast.LENGTH_LONG).show();
finish();
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
public void onStart() {
super.onStart();
if (!bt.isBluetoothEnabled()) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(intent, BluetoothState.REQUEST_ENABLE_BT);
} else {
if (!bt.isServiceAvailable()) {
bt.setupService();
bt.startService(BluetoothState.DEVICE_OTHER);
}
}
}
}
