本文共 10087 字，大约阅读时间需要 33 分钟。

话不多说直接上代码：

1.Activity：

package com.vstar3d.buletoothdemo;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.BluetoothSocket;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.AdapterView;import android.widget.Button;import android.widget.CompoundButton;import android.widget.ListView;import android.widget.Switch;import android.widget.TextView;import android.widget.Toast;import java.io.IOException;import java.lang.reflect.Method;import java.util.ArrayList;import java.util.List;import java.util.UUID;public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener, AdapterView.OnItemClickListener {    private TextView textswitch, textprompt, texttilte;    private Switch switchview;    private BluetoothAdapter mBluetoothAdapter;    private Button button;    private ListView lvNewDevices;    private BuleToothAdapter adapter;    private List
   
     list = new ArrayList
    
     ();    private PhoneDate phoneDate = new PhoneDate();    List
     
       lstDevices = new ArrayList
      
       ();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        textswitch = (TextView) findViewById(R.id.textswitch);        textprompt = (TextView) findViewById(R.id.textprompt);        textprompt.setVisibility(View.VISIBLE);        texttilte = (TextView) findViewById(R.id.texttilte);        switchview = (Switch) findViewById(R.id.switchview);        lvNewDevices = (ListView) findViewById(R.id.listview_prompt);        button = (Button) findViewById(R.id.button);        adapter = new BuleToothAdapter(this, lstDevices);        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();        if (mBluetoothAdapter == null) {            Toast.makeText(this, "设备不支持蓝牙", Toast.LENGTH_SHORT).show();            return;        }        IntentFilter intentFilter = new IntentFilter();        intentFilter.addAction(BluetoothDevice.ACTION_FOUND);        intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);        intentFilter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);        intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);        registerReceiver(mReceiver, intentFilter);        switchview.setOnCheckedChangeListener(this);        lvNewDevices.setOnItemClickListener(this);        lvNewDevices.setAdapter(adapter);        adapter.notifyDataSetChanged();    }    public void onClick(View view) {        button.setEnabled(false);        button.setText("搜索中...");        setTitle("搜索中...");        if (mBluetoothAdapter.getState() == BluetoothAdapter.STATE_OFF) {            Toast.makeText(MainActivity.this, "请先打开蓝牙", Toast.LENGTH_SHORT).show();            return;        }        if (mBluetoothAdapter.isDiscovering())            mBluetoothAdapter.cancelDiscovery();        list.clear();        Object[] lstDevice = mBluetoothAdapter.getBondedDevices().toArray();        for (int i = 0; i < lstDevice.length; i++) {            BluetoothDevice device = (BluetoothDevice) lstDevice[i];            String str = "已配对|" + device.getName() + "|"                    + device.getAddress();            phoneDate.setConnectState(device.getBondState());            phoneDate.setName(str);            lstDevices.add(str);            adapter.notifyDataSetChanged();        }        mBluetoothAdapter.startDiscovery();    }    @Override    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {        if (isChecked) {            textprompt.setVisibility(View.GONE);            textswitch.setText("开启");            mBluetoothAdapter.enable();//打开蓝牙            Intent discoverableIntent = new Intent(                    BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);            discoverableIntent.putExtra(                    BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 0);            startActivity(discoverableIntent);            mBluetoothAdapter.getAddress();            mBluetoothAdapter.getName();        } else {            textprompt.setVisibility(View.VISIBLE);            textswitch.setText("关闭");            mBluetoothAdapter.disable();//关闭蓝牙        }    }    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            Bundle b = intent.getExtras();            Object[] lstName = b.keySet().toArray();            // 显示所有收到的消息及其细节            for (int i = 0; i < lstName.length; i++) {                String keyName = lstName[i].toString();                Log.e(keyName, String.valueOf(b.get(keyName)));            }            BluetoothDevice device = null;            // 搜索设备时，取得设备的MAC地址            if (BluetoothDevice.ACTION_FOUND.equals(action)) {                device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                if (device.getBondState() == BluetoothDevice.BOND_NONE) {                    String str = "未配对|" + device.getName() + "|"                            + device.getAddress();                    if (list.indexOf(str) == -1)// 防止重复添加                        phoneDate.setConnectState(device.getBondState());                    phoneDate.setName(str);                   // list.add(phoneDate); // 获取设备名称和mac地址                    lstDevices.add(str);                    adapter.notifyDataSetChanged();                }            } else if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {                device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                switch (device.getBondState()) {                    case BluetoothDevice.BOND_BONDING:                        Log.d("BlueToothTestActivity", "正在配对......");                        break;                    case BluetoothDevice.BOND_BONDED:                        Log.d("BlueToothTestActivity", "完成配对");                        try {                            connect(device);//连接设备                        } catch (IOException e) {                            e.printStackTrace();                        }                        break;                    case BluetoothDevice.BOND_NONE:                        Log.d("BlueToothTestActivity", "取消配对");                    default:                        break;                }            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action))            {                button.setEnabled(true);                setTitle("蓝牙");                button.setText("搜索设备");            }        }    };    private void connect(BluetoothDevice device) throws IOException {        // 固定的UUID        final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB";        UUID uuid = UUID.fromString(SPP_UUID);        BluetoothSocket socket = device.createRfcommSocketToServiceRecord(uuid);        socket.connect();    }    @Override    protected void onDestroy() {        super.onDestroy();        if (mBluetoothAdapter != null) {            mBluetoothAdapter.cancelDiscovery();        }        unregisterReceiver(mReceiver);    }    @Override    public void onItemClick(AdapterView
        parent, View view, int position, long id) {        if (mBluetoothAdapter.isDiscovering()) mBluetoothAdapter.cancelDiscovery();        String str = lstDevices.get(position);        String[] values = str.split("\\|");        String address = values[2];        Log.e("address", values[2]);        BluetoothDevice btDev = mBluetoothAdapter.getRemoteDevice(address);        try {            Boolean returnValue = false;            if (btDev.getBondState() == BluetoothDevice.BOND_NONE) {                Method createBondMethod = BluetoothDevice.class                        .getMethod("createBond");                Log.d("BlueToothTestActivity", "开始配对");                returnValue = (Boolean) createBondMethod.invoke(btDev);            } else if (btDev.getBondState() == BluetoothDevice.BOND_BONDED) {                connect(btDev);            }        } catch (Exception e) {            e.printStackTrace();        }    }}
      
     
    
   

2.adapter：

package com.vstar3d.buletoothdemo;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;import java.util.List;public class BuleToothAdapter extends BaseAdapter {    private Context mContext;    private List
   
     list;    public BuleToothAdapter(Context mContext, List
    
      list) {        this.mContext = mContext;        this.list = list;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return list.get(position);    }    @Override    public long getItemId(int position) {        return 0;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder viewHolder;        if (convertView == null){            convertView = LayoutInflater.from(mContext).inflate(R.layout.layout_buletooth_adapter,null);            viewHolder = new ViewHolder();            viewHolder.textView = (TextView) convertView.findViewById(R.id.textView);            viewHolder.isconnect = (TextView) convertView.findViewById(R.id.isconnect);            convertView.setTag(viewHolder);        }else {            viewHolder = (ViewHolder) convertView.getTag();        }        String stringTitle = list.get(position);        viewHolder.textView.setText(stringTitle);        return convertView;    }    class ViewHolder{        TextView textView;        TextView isconnect;    }}
    
   

3.权限：

4.布局：acvivity_main

5.实际效果图：