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一、APP端调用

1、注册广播监听查找结果

//蓝牙发现设备和查找结束广播
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(btReceiver, intentFilter);
 
BroadcastReceiver btReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (BluetoothDevice.ACTION_FOUND.equals(intent.getAction())) {
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            if (device != null) {
                //这里收到的是单条设备信息，可以放到List中进行刷新列表
                //设备名称：device.getName()
                //设备地址：device.getAddress()
                if(device.getBondState() == BluetoothDevice.BOND_BONDED) {
                    //已配对设备
                }
            }
        } else if (BluetoothAdapter.ACTION_DISCOV