LMBluetoothSdk

A library to make classic bluetooth or BLE easier to use in Android.

Screenshots

Usage

Step 1

Gradle

dependencies {
    compile 'co.lujun:lmbluetoothsdk:1.0.5'
}

Maven

<dependency>
    <groupId>co.lujun</groupId>
    <artifactId>lmbluetoothsdk</artifactId>
    <version>1.0.5</version>
    <packaging>aar</packaging>
</dependency>

Step 2

Build the controller in your app with current context(the sdk need this context to register a BroadcastReceiver to receive the bluetooth status), and you may get the singleton BluetoothController(BluetoothLEController) object, code like that:

// For classic bluetooth
BluetoothController mBTController = BluetoothController.getInstance().build(Context context);

// If you make code for BLE
// BluetoothLEController mBLEController = BluetoothLEController.getInstance().build(Context context);

Step 3

Use the BluetoothController instance you get to set a UUID for SDP record. If skip this step, will use the default UUID fa87c0d0-afac-11de-8a39-0800200c9a66. If you are connecting to a Bluetooth serial board then try using the well-known SPP UUID 00001101-0000-1000-8000-00805F9B34FB. This step is for classic bluetooth.

mBTController.setAppUuid(UUID uuid);

Step 4

Use the controller instance you get to set a BluetoothListener(BluetoothLEListener), with this listener you can get all status and data you need.

mBTController.setBluetoothListener(new BluetoothListener() {

       @Override
       public void onActionStateChanged(int preState, int state) {
           // Callback when bluetooth power state changed.
       }

       @Override
       public void onActionDiscoveryStateChanged(String discoveryState) {
           // Callback when local Bluetooth adapter discovery process state changed.
       }

       @Override
       public void onActionScanModeChanged(int preScanMode, int scanMode) {
           // Callback when the current scan mode changed.
       }

       @Override
       public void onBluetoothServiceStateChanged(int state) {
           // Callback when the connection state changed.
       }

       @Override
       public void onActionDeviceFound(BluetoothDevice device) {
           // Callback when found device.
       }

       @Override
       public void onReadData(final BluetoothDevice device, final byte[] data) {
           // Callback when remote device send data to current device.
       }
});

mBLEController.setBluetoothListener(new BluetoothLEListener() {

        @Override
        public void onReadData(final BluetoothGattCharacteristic characteristic) {
            // Read data from BLE device.
        }

        @Override
        public void onWriteData(final BluetoothGattCharacteristic characteristic) {
            // When write data to remote BLE device, the notification will send to here.
        }

        @Override
        public void onDataChanged(final BluetoothGattCharacteristic characteristic) {
            // When data changed, the notification will send to here.
        }

        @Override
        public void onActionStateChanged(int preState, int state) {
            // Callback when bluetooth power state changed.
        }

        @Override
        public void onActionDiscoveryStateChanged(String discoveryState) {
            // Callback when local Bluetooth adapter discovery process state changed.
        }

        @Override
        public void onActionScanModeChanged(int preScanMode, int scanMode) {
            // Callback when the current scan mode changed.
        }

        @Override
        public void onBluetoothServiceStateChanged(final int state) {
            // Callback when the connection state changed.
        }

        @Override
        public void onActionDeviceFound(final BluetoothDevice device, short rssi)) {
            // Callback when found device.
        }
});

Now the initialization step has been completed, you can use the following functional methods to make you app.

Public methods for BluetoothController/BluetoothLEController

method	param	return	description
isAvailable()		true if the bluetooth is available	determine whether the bluetooth is available
isEnabled()		true if the bluetooth is opened	determine whether the bluetooth is opened
openBluetooth()		if open success will return true	open bluetooth
closeBluetooth()			close bluetooth
getBluetoothState()		possible value are STATE_OFF, STATE_TURNING_ON, STATE_ON, STATE_TURNING_OFF in android.bluetooth.BluetoothAdapter class	get current bluetooth state
startScan()		true if start scan operation success	start scan for found bluetooth device
cancelScan()		true if cancel scan operation success	cancel device's scan operation
getBondedDevices()		the paired devices set	get paired devices
findDeviceByMac(String mac)	the bluetooth MAC address	remote bluetooth device	find a bluetooth device by MAC address
connect(String mac)	the bluetooth MAC address		connected a bluetooth device by MAC address
disconnect()			disconnect
write(byte[] data)	the byte array represent the data		write data to remote device
getConnectionState()		the connection state	get the connection state
getConnectedDevice()		connected remote device	get the connected remote device
release()			release the instance resources, if you want to use again, use the instance's build(Context) method build again

Note: In Android6.0+, you have to ask the user explicitly about ACCESS_COARSE_LOCATION permission, because BluetoothDevice.ACTION_FOUND require ACCESS_COARSE_LOCATION permission when search classic bluetooth devices.

Public methods for BluetoothController

method	param	return	description
startAsServer()			start as a server, that will listen to client connect
setDiscoverable(int time)	the time(unit seconds) of the device's bluetooth can be found	true if set discoverable operation success	set bluetooth discoverable with specified time
reConnect(String mac)	the bluetooth MAC address		reconnect a bluetooth device by MAC address when the connection is lost
getAppUuid()		an UUID	get current SDP recorded UUID
setAppUuid(UUID uuid)	an UUID		set an UUID for SDP record

Public methods for BluetoothLEController

method	param	return	description
isSupportBLE()		true if the device support BLE	check to determine whether BLE is supported on the device
reConnect()			reconnect a bluetooth device when the connection is lost
setScanTime(int time)	the scan time(unit millisecond)		set scan time
getScanTime()		the scan time	get scan time

State

Manufacturing bluetooth connection status, there are 6 states in the class.

status	value	description
STATE_NONE	0	doing nothing
STATE_LISTEN	1	listening for incoming connections
STATE_CONNECTING	2	initiating an outgoing connection
STATE_CONNECTED	3	connected to a remote device
STATE_DISCONNECTED	4	lost the connection
STATE_UNKNOWN	5	unknown state
STATE_GOT_CHARACTERISTICS	6	got all characteristics

Change logs

1.0.5(2017-2-16)

• bug fix

1.0.4(2017-2-6)

• bug fix

1.0.2(2016-3-15)

• Add RSSI value for scan callback
• Add STATE_GOT_CHARACTERISTICS state for got all characteristics
• fixed issue #3

1.0.1(2016-2-2)

• sync to Maven
• fixed issue #2

1.0.0(2016-1-26)

• First release

Sample App

APK

About

If you have any questions, contact me: lujun.byte#gmail.com.

License

The MIT License (MIT)

Copyright (c) 2015 LinkMob.cc

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The above copyright notice and this permission notice shall be included in all
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