Android搜索附近蓝牙

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1.首先添加蓝牙所需要的权限

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

2.获取蓝牙适配器,并检查蓝牙是否打开,没有打开的话就询问用户是否打开

 //获取蓝牙适配器        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();        Log.d(TAG, "蓝牙是否打开: " + mBluetoothAdapter.isEnabled());        //判断当前蓝牙是否打开        if (!mBluetoothAdapter.isEnabled()) {            //如果蓝牙处于关闭状态,弹出提示询问用户是否打开蓝牙            Intent enabler = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);            startActivityForResult(enabler, REQUEST_ENABLE);        }

3.动态注册广播来接受搜索到的蓝牙信息

    private BroadcastReceiver mBluetoothReceiver = new BroadcastReceiver(){        @Override        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            if(BluetoothDevice.ACTION_FOUND.equals(action)){//每扫描到一个设备，系统都会发送此广播。                //获取蓝牙设备                BluetoothDevice scanDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                if(scanDevice == null || scanDevice.getName() == null) return;                Log.d(TAG, "搜索到了: name="+scanDevice.getName()+"  address="+scanDevice.getAddress());            }        }    };

4.注册广播

    //注册广播搜索蓝牙    private void registerReceiver() {        IntentFilter filter = new IntentFilter();        //发现设备        filter.addAction(BluetoothDevice.ACTION_FOUND);        //设备连接状态改变        filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);        //蓝牙设备状态改变        filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);        registerReceiver(mBluetoothReceiver, filter);    }

5.开始搜索

mBluetoothAdapter.startDiscovery();

6.停止搜索

mBluetoothAdapter.cancelDiscovery();

7.获取本机蓝牙详细信息

    //获取蓝牙详情    private void getBlueToothDetail() {        //获取本机蓝牙名称        String name = mBluetoothAdapter.getName();        //获取本机蓝牙地址        String address = mBluetoothAdapter.getAddress();        Log.d(TAG, "蓝牙名称: " + name + "蓝牙地址: " + address);        //获取已配对蓝牙设备        Set<BluetoothDevice> devices = mBluetoothAdapter.getBondedDevices();        Log.d(TAG, "已配对蓝牙数: " + devices.size());        for (BluetoothDevice bonddevice : devices) {            Log.d(TAG, "已配对蓝牙 name =" + bonddevice.getName() + " address" + bonddevice.getAddress());        }    }

Demo下载:https://fir.im/buletooth

源码:https://github.com/lvkaixuan/Bluetooth

效果图