Android之蓝牙开发初编(发现蓝牙,配对蓝牙,连接蓝牙)

1.添加蓝牙权限:

<uses-permission android:name="android.permission.BLUETOOTH"/>

<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

2.搜索蓝牙(使用BluetoochAdapter)

  BluetoothAdapter adapter=BluetoothAdapter.getDefaultAdapter();//获取蓝牙if (adapter==null){     ToastUtil.showToast(context,"该设备不支持蓝牙");     return;    }if (!adapter.isEnabled()){//是否打开蓝牙设备    Intent intent=new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);    context.startActivityForResult(intent,REQUEST_ENABLE);    Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);    discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);    context.startActivity(discoverableIntent);}else {    Set<BluetoothDevice> sets=adapter.getBondedDevices();    IntentFilter filter = new IntentFilter();    filter.addAction(BluetoothDevice.ACTION_FOUND);    filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);    filter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);    filter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);    filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);    filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);    context.registerReceiver(mreceiver, filter);    if (sets.size()>0){//获取已经配备设备        for (BluetoothDevice device:sets){        bluetoothDevices.add(device);        bd=device;        new ConnectThread().start();     }     }else {         adapter.startDiscovery();     }}

3.蓝牙广播:

private static BroadcastReceiver mreceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            if (BluetoothDevice.ACTION_FOUND.equals(action)) {                bd = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);//发现蓝牙设备                Log.d("xxx", "find:" + bd.getName());                if (bd.getName()!=null){                    if (bd.getName().contains("BF4030")){//查找设备名为:BF4030进行配对                        if (bd.getBondState()==BluetoothDevice.BOND_NONE){//如果没有配对                           //进行配对                            try {                                Method mm = bd.getClass().getMethod("createBond", (Class[]) null);                                mm.invoke(bd, (Object[]) null);//这里会弹出输入pin窗口                            }catch (Exception e){                                e.printStackTrace();                            }                        }else if (bd.getBondState()==BluetoothDevice.BOND_BONDED){                            new ConnectThread().start();//已经配对进行连接                        }                    }                }            }else if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)){//配对状态的改变                bd = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                switch (bd.getBondState()){                    case BluetoothDevice.BOND_BONDING:                        LogUtil.ShowLog(TAG,"正在配对...");                        break;                    case BluetoothDevice.BOND_BONDED:                        LogUtil.ShowLog(TAG,"完成配对.");                        new ConnectThread().start();                        break;                    case BluetoothDevice.BOND_NONE:                        LogUtil.ShowLog(TAG,"取消配对.");                        break;                }            }else if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)){                LogUtil.ShowLog(TAG,"已经连接上蓝牙设备");            }else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)){                LogUtil.ShowLog(TAG,"已经断开蓝牙设备");            }        }    };

4.连接蓝牙设备(根据BluetoochDevice)

public static class ConnectThread extends Thread {        static final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB";        public ConnectThread() {            BluetoothSocket tmp = null;            try {                tmp=bd.createRfcommSocketToServiceRecord(UUID.fromString(SPP_UUID));            } catch (IOException e) {                e.printStackTrace();            }            bluesocket = tmp;        }        @Override        public void run() {            adapter.cancelDiscovery();//取消蓝牙发现            try {                if (!bluesocket.isConnected()){                    bluesocket.connect();//发起连接                    //连接成功后读取数据                    handler.sendEmptyMessage(101);//连接成功                    new ConnectedThread().start();                }            } catch (IOException e) {                handler.sendEmptyMessage(103);//断开连接            }        }    }

 private static class ConnectedThread extends Thread {        private final InputStream mis;        private ConnectedThread() {            InputStream tmpis = null;            try {                tmpis = bluesocket.getInputStream();            } catch (IOException e) {                e.printStackTrace();            }            mis = tmpis;        }        @Override        public void run() {            byte[] buffer = new byte[1024];            int bytes;            while (true) {                try {                    if (bluesocket.isConnected()){                        bytes = mis.read(buffer);//读取得到的信息发送消息                        handler.obtainMessage(102,bytes,-1,buffer).sendToTarget();                    }else {                        handler.sendEmptyMessage(103);//断开连接                        return;                    }                } catch (IOException e) {                    handler.sendEmptyMessage(103);//断开连接                    return;                }            }        }    }