android BLE Peripheral 做外设模拟设备，供ios、android 连接通讯。

 1 public void startAdvertising(MockServerCallBack callBack) {
 2         //获取BluetoothLeAdvertiser，BLE发送BLE广播用的一个API
 3         if (mBluetoothAdvertiser == null) {
 4             mBluetoothAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
 5         }
 6         //创建BluetoothGattServerCallback，
 7         // MockServerCallBack这个类继承自BluetoothGattServerCallback
 8         // BluetoothGattServerCallback这个回调类主要是一些BLE读写的接口
 9         // 关于BLE读写的操作都在这个Callback中完成
10         if (mBluetoothAdvertiser != null) {
11             mMockServerCallBack = callBack;
12             //打开BluetoothGattServer
13             mGattServer = mBluetoothManager.openGattServer(mActivity, mMockServerCallBack);
14             if (mGattServer == null) {
15                 Log.e(TAG, "gatt is null");
16             }
17             try {
18                 mMockServerCallBack.setupServices(mActivity, mGattServer);
20                 mBluetoothAdvertiser.startAdvertising(createAdvSettings(true, 0)
21                         , createAdvertiseData(BluetoothUUID.bleServerUUID), mAdvCallback);
22             } catch (Exception e) {
23                 Log.v(TAG, "Fail to setup BleService");
24             }
25         }
26 
27         isAdvertising = true;
28     }

BluetoothAdapter
public boolean startLeScan(final UUID[] serviceUuids, final LeScanCallback callback)；

 1  public static AdvertiseData createAdvertiseData(UUID proximityUuid) {
 2     AdvertiseData.Builder builder = new AdvertiseData.Builder();
 4     builder.addManufacturerData(0x0301, new byte[]{0x01, 0x03});
 5     builder.addServiceUuid(ParcelUuid.fromString(BluetoothUUID.bleServerUUID.toString())
 7     AdvertiseData adv = builder.build();
10     return adv;
11  }

1 bluetoothGattServer.sendResponse(device, requestId, BluetoothGatt.GATT_SUCCESS, offset, value);
2 // 执行 sendResponse后，会触发回调方法 onCharacteristicWriteRequest

1 public void onCharacteristicWriteRequest(BluetoothDevice device, int requestId
2 , BluetoothGattCharacteristic characteristic, boolean preparedWrite, boolean responseNeeded, int offset, byte[] requestBytes) {
3        // 这个里可以获得 来自客户端发来的数据 requestBytes
4 }

  1 public class MockServerCallBack extends BluetoothGattServerCallback {
  2 
  3 public void setupServices(Context context, BluetoothGattServer gattServer) throws InterruptedException {
  4         if (gattServer == null) {
  5             throw new IllegalArgumentException("gattServer is null");
  6         }
  7         mGattServer = gattServer;
  8         // 设置一个GattService以及BluetoothGattCharacteristic
  9         BluetoothGattService service = new BluetoothGattService(BluetoothUUID.bleServerUUID,
 10                 BluetoothGattService.SERVICE_TYPE_PRIMARY);
 11 
 12         BluetoothGattService service2 = new BluetoothGattService(BluetoothUUID.bleServerUUID2,
 13                 BluetoothGattService.SERVICE_TYPE_PRIMARY);
 14 
 15         //add a read characteristic.
 16         // 当是ios设备连接过来时，需添加BluetoothGattCharacteristic.PROPERTY_INDICATE进行兼容。
 17         mCharacteristicRead = new BluetoothGattCharacteristic(BluetoothUUID.readDataUUID
 18                 , BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_INDICATE
 19                 , BluetoothGattCharacteristic.PERMISSION_READ);
 20         //add a descriptor
 21         BluetoothGattDescriptor descriptor = new BluetoothGattDescriptor(BluetoothUUID.CLIENT_CHARACTERISTIC_CONFIG
 22                 , BluetoothGattCharacteristic.PERMISSION_WRITE);
 23         mCharacteristicRead.addDescriptor(descriptor);
 24         service.addCharacteristic(mCharacteristicRead);
 25 
 26         BluetoothGattCharacteristic write = new BluetoothGattCharacteristic(
 27                 BluetoothUUID.writeDataUUID,
 28                 BluetoothGattCharacteristic.PROPERTY_WRITE | BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_INDICATE,
 29                 BluetoothGattCharacteristic.PERMISSION_WRITE);
 30 
 31         service.addCharacteristic(write);
 32 
 33         if (mGattServer != null && service != null) {
 34             mGattServer.addService(service);
 35             mGattServer.addService(service2);
 36         }
 37 
 38     }
 39 
 40     //当添加一个GattService成功后会回调改接口。
 41     public void onServiceAdded(int status, BluetoothGattService service) {
 42         super.onServiceAdded(status, service);
 43         if (status == BluetoothGatt.GATT_SUCCESS) {
 44             Log.d(TAG, "onServiceAdded status=GATT_SUCCESS service=" + service.getUuid().toString());
 45         } else {
 46             Log.d(TAG, "onServiceAdded status!=GATT_SUCCESS");
 47         }
 48     }
 49 
 50     //BLE设备连接状态发生改变后回调的接口
 51     public void onConnectionStateChange(android.bluetooth.BluetoothDevice device, int status,
 52                                         int newState) {
 53         super.onConnectionStateChange(device, status, newState);
 54         Log.e(TAG, String.format("1.onConnectionStateChange：device name = %s, address = %s"
 55                 , device.getName(), device.getAddress()));
 56         Log.d(TAG, "onConnectionStateChange status=" + status + "->" + newState);
 57         if (newState == BluetoothProfile.STATE_DISCONNECTED) {
 58             btClient = null; // 移除连接设备
 59         }
 60     }
 61 
 62     //当有客户端来读数据时回调的接口
 63 
 64     /**
 65      * 特征被读取。当回复响应成功后，客户端会读取然后触发本方法, 
 66      */
 67     public void onCharacteristicReadRequest(android.bluetooth.BluetoothDevice device,
 68                                             int requestId, int offset, BluetoothGattCharacteristic characteristic) {
 69         super.onCharacteristicReadRequest(device, requestId, offset, characteristic);
 70         characteristic.setValue(new byte[]{0x03, 0x01});
 71         Log.e(TAG, String.format("1.onCharacteristicReadRequest：device name = %s, address = %s"
 72                 , device.getName(), device.getAddress()));
 73         Log.e(TAG, String.format("onCharacteristicReadRequest：requestId = %s, offset = %s", requestId, offset));
 74         boolean result = mGattServer.sendResponse(device, requestId, BluetoothGatt.GATT_SUCCESS, offset, characteristic.getValue());
 75 
 76         Log.e(TAG, "read request send response:" + result);
 77     }
 78 
 79     //当有客户端来写数据时回调的接口
 80 
 81     /**
 82      * 接受具体数据字节 85      */
 86     @Override
 87     public void onCharacteristicWriteRequest(android.bluetooth.BluetoothDevice device,
 88                                              int requestId, BluetoothGattCharacteristic characteristic, boolean preparedWrite,
 89                                              boolean responseNeeded, int offset, byte[] value) {
 90         super.onCharacteristicWriteRequest(device, requestId, characteristic, preparedWrite, responseNeeded, offset, value);
 91 
 92         mGattServer.sendResponse(device, requestId, BluetoothGatt.GATT_SUCCESS, offset, null);
 93 
 94         // 处理其它设备写进来的数据
 95         value.  // 处理数据 byte[] value，记住连接设备
 96 
 97     }
 98 
 99     //描述被写入时，在这里执行bluetoothGattServer.sendResponse(device, requestId, BluetoothGatt.GATT_SUCCESS...) 时，触发onCharacteristicWriteRequest
100     @Override
101     public void onDescriptorWriteRequest(BluetoothDevice device, int requestId, BluetoothGattDescriptor descriptor, boolean preparedWrite, boolean responseNeeded, int offset, byte[] value) {
102         super.onDescriptorWriteRequest(device, requestId, descriptor, preparedWrite, responseNeeded, offset, value);
103 
104         Log.d(TAG, "onDescriptorWriteRequest:" + Arrays.toString(value));
105         // now tell the connected device that this was all successfull
106         mGattServer.sendResponse(device, requestId, BluetoothGatt.GATT_SUCCESS, offset, value);
107     }
108 
109 }