搜索附近蓝牙并发送信息

package com.example.administrator.blue.dome;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Looper;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.example.administrator.blue.R;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

public class BlueActivity extends AppCompatActivity {
    private ListView listview;
    private TextView tv;
    BluetoothAdapter adapter;
    private List<String> mdata =new ArrayList<>();
    private FoundRecevier recevier;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_blue);
        listview = (ListView) findViewById(R.id.show_list);
        tv = (TextView) findViewById(R.id.show_blueinfo);


        insEndle();
        recevier = new FoundRecevier();
        IntentFilter filter = new IntentFilter();
        filter.addAction(BluetoothDevice.ACTION_FOUND);
        filter.addAction(adapter.ACTION_DISCOVERY_FINISHED);
        registerReceiver(recevier, filter);
        setEvent();
        AccecpThread accecpThread = new AccecpThread();
        accecpThread.start();

    }
    private void setEvent() {

        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                String msg = mdata.get(i);

                String address = msg.substring(msg.indexOf(":") + 1);

                final BluetoothDevice remoteDevice = adapter.getRemoteDevice(address);

                final UUID uuid =UUID.fromString("00001111-1010-1100-0101-0088abc73456");

                AlertDialog.Builder builder = new AlertDialog.Builder(BlueActivity.this);
                View view1 =getLayoutInflater().inflate(R.layout.item_dialog,null);
                final EditText et = (EditText) view1.findViewById(R.id.show_et);
                Button bt = (Button) view.findViewById(R.id.show_bt);

                bt.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {

                        String msg = et.getText().toString();

                        try {
                            BluetoothSocket sock = remoteDevice.createRfcommSocketToServiceRecord(uuid);
                        sock.connect();
                            OutputStream outputStream = sock.getOutputStream();
                            outputStream.write(msg.getBytes());
                            outputStream.flush();

                        } catch (IOException e) {
                            e.printStackTrace();
                        }


                    }
                });


            }
        });
    }
    private void insEndle() {
        adapter =BluetoothAdapter.getDefaultAdapter();
        if (adapter==null)
        {
            tv.setText("此设备没有蓝牙");
        }
        if (!adapter.isEnabled())

        {
            tv.setText("此设备有蓝牙，但是没有开启");
            AlertDialog.Builder builder =new AlertDialog.Builder(this);
            builder.setTitle("提示信息");
            builder.setMessage("是否开启蓝牙");
            builder.setNegativeButton("取消",null);
            builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    Intent intent =new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                    startActivityForResult(intent,100);
                }
            });
            builder.show();
        }else {
            tv.setText("已开启");
        }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
       if (requestCode==100&&resultCode== Activity.RESULT_OK)
       {
           Toast.makeText(this,"已开启",Toast.LENGTH_SHORT).show();
            tv.setText("已开启了");
       }
    }
    public void onClick(View view) {
        if (adapter.isDiscovering()) {
            adapter.cancelDiscovery();
        }
        adapter.startDiscovery();
    }
    class FoundRecevier extends BroadcastReceiver{
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (action.equals(BluetoothDevice.ACTION_FOUND))
            {
              BluetoothDevice a=  intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                String name = a.getName();
                String address = a.getAddress();
                String msg ="设备名称"+name+"\n设备地址"+address;
                mdata.add(msg);
            }
            else if (action.equals(adapter.ACTION_DISCOVERY_FINISHED)){
                ArrayAdapter arrayAdapter =new ArrayAdapter(BlueActivity.this,android.R.layout.simple_list_item_1,mdata);
                listview.setAdapter(arrayAdapter);
            }
        }
    }
    class AccecpThread extends Thread{
        BluetoothServerSocket serverSocket;
        BluetoothSocket socket;
        InputStream is;
        public AccecpThread(){
            UUID uuid = UUID.fromString("00001111-1010-1100-0101-0088abc73456");
            try {
                serverSocket = adapter.listenUsingRfcommWithServiceRecord("Server",uuid);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        @Override
        public void run() {
            try {
                socket =serverSocket.accept();
           while (true)
           {
               byte[] bytes =new byte[1024];
               int count =is.read(bytes);
               String msg = new String(bytes, 0, count, "utf-8");
               Looper.prepare();
               Toast.makeText(BlueActivity.this,"接受的的信息"+msg,Toast.LENGTH_SHORT).show();
                Looper.loop();
           }


            } catch (IOException e) {
                e.printStackTrace();
            }


        }
    }


}