确认bluetooth权限已经添加到AndroidManifest.xml文件中

确认BluetoothAdapter已经启用

BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) { Intent enableBluetoothIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBluetoothIntent, REQUEST_ENABLE_BT); }

确认已经被发现

Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, DISCOVERABLE_DURATION); startActivity(discoverableIntent);

确认已经配对

Set pairedDevices = bluetoothAdapter.getBondedDevices(); if (pairedDevices.size() > 0) { for (BluetoothDevice device : pairedDevices) { Log.d(TAG, "Paired device found: " + device.getName() + " (" + device.getAddress() + ")"); } }

确认已经开始配对

BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress); device.createBond();