我们有一个Android设备，既可以作为蓝牙同步，也可以作为蓝牙外设。 当Android / IOS设备尝试通过BLE连接我的蓝牙外设时，有时会在Android / IOS设备上弹出蓝牙配对。
蓝牙同步已经从系统级完成，这里是ble外设的代码。
public final class ClusterPeripheral {
private static final String TAG = ClusterPeripheral.class.getSimpleName();
private static final UUID ClusterDevice_Service = UUID.fromString("0095aad6-8719-11e7-bb31-be2e44b06b34");
private static final UUID Cluster_PACKET_WRITE_CHARACTERSTICS = UUID.fromString("1d090324-871a-11e7-bb31-be2e44b06b34");
private static final UUID Cluster_BIKE_KEY_CHARACTERISTICS = UUID.fromString("21a25f42-a1ab-11e7-abc4-cec278b6b50a");
private static final UUID Cluster_CONNECTION_STATE_CHARACTERISTICS = UUID.fromString("4a32defa-a8b8-11e7-abc4-cec278b6b50a");
private static final UUID Cluster_NAVIGATION_STATE_CHARACTERISTICS = UUID.fromString("4a8cc23a-c13b-11e7-abc4-cec278b6b50a");
public static final UUID Cluster_BIKE_KEY_CHANGE_CHARACTERISTICS = UUID.fromString("6a32e314-a8b8-11e7-abc4-cec278b6b50a");
public static final UUID Cluster_CONNECTION_CHARACTERISTICS = UUID.fromString("d13674a6-ace2-11e7-abc4-cec278b6b50a");
public static final UUID Cluster_IOS_NOTIFICATION_CHARACTERISTICS = UUID.fromString("46e55460-cdea-11e7-abc4-cec278b6b50a");
public static final UUID CLIENT_CHARACTERISTIC_CONFIGURATION_UUID = UUID
.fromString("00002902-0000-1000-8000-00805f9b34fb");
private static final UUID CHARACTERISTIC_USER_DESCRIPTION_UUID = UUID
.fromString("00002901-0000-1000-8000-00805f9b34fb");
private AppPreferences appPreferences;
private BluetoothGattService Cluster_Service_Instance;
public static BluetoothGattCharacteristic Cluster_WRITE_InstanceCharacterstics;
public static BluetoothGattCharacteristic Cluster_BIKE_KEY_InstanceCharacterstics;
public static BluetoothGattCharacteristic Cluster_STATE_CONNECTED_Characterstics;
public static BluetoothGattCharacteristic Cluster_IOS_NOTIFICATION_Characterstics;
public static BluetoothGattCharacteristic Cluster_Connection_Characteristics;
public static BluetoothGattCharacteristic Cluster_NAVIGATION_STATE_Characterstics;
public static BluetoothGattCharacteristic Cluster_BIKE_KEY_CHANGE_Characterstics;
public ClusterPeripheral() {
appPreferences = AppPreferences.getInstance(Cluster.mActivity);
Cluster_WRITE_InstanceCharacterstics =
new BluetoothGattCharacteristic(Cluster_PACKET_WRITE_CHARACTERSTICS,
BluetoothGattCharacteristic.PROPERTY_WRITE,
BluetoothGattCharacteristic.PERMISSION_WRITE);
//initializing the bike key characteristic
Cluster_BIKE_KEY_InstanceCharacterstics =
new BluetoothGattCharacteristic(Cluster_BIKE_KEY_CHARACTERISTICS,
BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_NOTIFY,
BluetoothGattCharacteristic.PERMISSION_READ);
//adding descriptor to the bike key characteristic
Cluster_BIKE_KEY_InstanceCharacterstics.addDescriptor(
getClientCharacteristicConfigurationDescriptor());
//initializing the state connected characteristic
Cluster_STATE_CONNECTED_Characterstics = new BluetoothGattCharacteristic(Cluster_CONNECTION_STATE_CHARACTERISTICS,
BluetoothGattCharacteristic.PROPERTY_READ,
BluetoothGattCharacteristic.PERMISSION_READ);
//initializing the navigation state characteristic
Cluster_NAVIGATION_STATE_Characterstics = new BluetoothGattCharacteristic(Cluster_NAVIGATION_STATE_CHARACTERISTICS,
BluetoothGattCharacteristic.PROPERTY_READ,
BluetoothGattCharacteristic.PERMISSION_READ);
Cluster_Connection_Characteristics = new BluetoothGattCharacteristic(Cluster_CONNECTION_CHARACTERISTICS,
BluetoothGattCharacteristic.PROPERTY_WRITE,
BluetoothGattCharacteristic.PERMISSION_WRITE);
//initilizing the bluetooth gatt service
Cluster_Service_Instance = new BluetoothGattService(ClusterDevice_Service,
BluetoothGattService.SERVICE_TYPE_PRIMARY);
Cluster_BIKE_KEY_CHANGE_Characterstics = new BluetoothGattCharacteristic(Cluster_BIKE_KEY_CHANGE_CHARACTERISTICS,
BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_WRITE | BluetoothGattCharacteristic.PROPERTY_NOTIFY,
BluetoothGattCharacteristic.PERMISSION_WRITE | BluetoothGattCharacteristic.PERMISSION_READ | BluetoothGattCharacteristic.PROPERTY_NOTIFY);
Cluster_BIKE_KEY_CHANGE_Characterstics.addDescriptor(
getClientCharacteristicConfigurationDescriptor());
Cluster_BIKE_KEY_CHANGE_Characterstics.addDescriptor(getCharacteristicUserDescriptionDescriptor("Update Vehichle Key"));
Cluster_IOS_NOTIFICATION_Characterstics = new BluetoothGattCharacteristic(Cluster_IOS_NOTIFICATION_CHARACTERISTICS,
BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_WRITE | BluetoothGattCharacteristic.PROPERTY_NOTIFY,
BluetoothGattCharacteristic.PERMISSION_WRITE | BluetoothGattCharacteristic.PERMISSION_READ | BluetoothGattCharacteristic.PROPERTY_NOTIFY);
Cluster_IOS_NOTIFICATION_Characterstics.addDescriptor(
getClientCharacteristicConfigurationDescriptor());
//adding the charateristics to the service
Cluster_Service_Instance.addCharacteristic(Cluster_WRITE_InstanceCharacterstics);
Cluster_Service_Instance.addCharacteristic(Cluster_BIKE_KEY_InstanceCharacterstics);
Cluster_Service_Instance.addCharacteristic(Cluster_STATE_CONNECTED_Characterstics);
Cluster_Service_Instance.addCharacteristic(Cluster_BIKE_KEY_CHANGE_Characterstics);
Cluster_Service_Instance.addCharacteristic(Cluster_Connection_Characteristics);
Cluster_Service_Instance.addCharacteristic(Cluster_NAVIGATION_STATE_Characterstics);
Cluster_Service_Instance.addCharacteristic(Cluster_IOS_NOTIFICATION_Characterstics);
Cluster_IOS_NOTIFICATION_Characterstics.setValue(0,BluetoothGattCharacteristic.FORMAT_UINT16, 0);
if (appPreferences.getPassKey().length() != 0)
Cluster_BIKE_KEY_InstanceCharacterstics.setValue(Integer.parseInt(appPreferences.getPassKey()),
BluetoothGattCharacteristic.FORMAT_UINT16, 0);
//setting the value of charateristic to Zero, if there is no device connected and 1, if a device is connected.
Cluster_STATE_CONNECTED_Characterstics.setValue(0,
BluetoothGattCharacteristic.FORMAT_UINT16, 0);
//setting the value of charateristic to Zero, if the navigation screen is not open
Cluster_NAVIGATION_STATE_Characterstics.setValue(0,
BluetoothGattCharacteristic.FORMAT_UINT16, 0);
//setting default value of bike pass key
if (appPreferences.getPassKey().length() != 0)
Cluster_BIKE_KEY_CHANGE_Characterstics.setValue(Integer.parseInt(appPreferences.getPassKey()),
BluetoothGattCharacteristic.FORMAT_UINT16, 0);
}
/**
* Return the instance of Cluster service.
*
* @return
*/
public BluetoothGattService getBluetoothGattService() {
AndroidAppUtils.showLog(TAG, "*****************getBluetoothGattService called");
return Cluster_Service_Instance;
}
/**
* Return UUID of Cluster Service
*
* @return
*/
public ParcelUuid getServiceUUID() {
AndroidAppUtils.showLog(TAG, "*****************getServiceUUID called");
return new ParcelUuid(ClusterDevice_Service);
}
/**
* Function to communicate to the ServiceHelper that a device wants to write to a
* characteristic.
* <p>
* The ServiceHelper should check that the value being written is valid and
* return a code appropriately. The ServiceHelper should update the UI to reflect the change.
*
* @param characteristic Characteristic to write to
* @param value Value to write to the characteristic
* @return {@link BluetoothGatt#GATT_SUCCESS} if the read operation
* was completed successfully. See {@link BluetoothGatt} for GATT return codes.
*/
public int writeCharacteristic(BluetoothGattCharacteristic characteristic, int offset, byte[] value, final String writtendata) {
AndroidAppUtils.showLog(TAG, "Length of data recieved: " + value.length + writtendata);
if (offset != 0) {
return BluetoothGatt.GATT_INVALID_OFFSET;
}
// Heart Rate control point is a 8bit characteristic
if (value.length != 1) {
Log.d(TAG, "value.length:" + BluetoothGatt.GATT_INVALID_ATTRIBUTE_LENGTH);
return BluetoothGatt.GATT_INVALID_ATTRIBUTE_LENGTH;
}
return BluetoothGatt.GATT_SUCCESS;
}
public static BluetoothGattDescriptor getClientCharacteristicConfigurationDescriptor() {
BluetoothGattDescriptor descriptor = new BluetoothGattDescriptor(
CLIENT_CHARACTERISTIC_CONFIGURATION_UUID,
(BluetoothGattDescriptor.PERMISSION_READ | BluetoothGattDescriptor.PERMISSION_WRITE));
descriptor.setValue(new byte[]{0, 0});
return descriptor;
}
public static BluetoothGattDescriptor getCharacteristicUserDescriptionDescriptor(String defaultValue) {
BluetoothGattDescriptor descriptor = new BluetoothGattDescriptor(
CHARACTERISTIC_USER_DESCRIPTION_UUID,
(BluetoothGattDescriptor.PERMISSION_READ | BluetoothGattDescriptor.PERMISSION_WRITE));
try {
descriptor.setValue(defaultValue.getBytes("UTF-8"));
} finally {
return descriptor;
}
}
}