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FastBle

Android Bluetooth Low Energy

• Filtering, scanning, linking, reading, writing, notification subscription and cancellation in a simple way.
• Supports acquiring signal strength and setting the maximum transmission unit.
• Support custom scan rules
• Support multi device connections
• Support reconnection
• Support configuration timeout for conncet or operation

Preview

APK

If you want to quickly preview all the functions, you can download APK as a test tool directly.

FastBLE.apk

Gradle

• Setp1: Add it in your root build.gradle at the end of repositories

    allprojects {
        repositories {
            ...
            maven { url 'https://jitpack.io' }
        }
    }
  

• Step2: Add the dependency

    dependencies {
        implementation 'com.github.Jasonchenlijian:FastBle:2.4.0'
    }
  

Jar

FastBLE-2.4.0.jar

Wiki

中文文档

Android BLE开发详解和FastBle源码解析

Usage

• Init

    BleManager.getInstance().init(getApplication());
  

• Determine whether the current Android system supports BLE

    boolean isSupportBle()
  

• Open or close Bluetooth

    void enableBluetooth()
    void disableBluetooth()
  

• Initialization configuration

    BleManager.getInstance()
            .enableLog(true)
            .setReConnectCount(1, 5000)
            .setSplitWriteNum(20)
            .setConnectOverTime(10000)
            .setOperateTimeout(5000);
  

• Configuration scan rules

  void initScanRule(BleScanRuleConfig scanRuleConfig)

    BleScanRuleConfig scanRuleConfig = new BleScanRuleConfig.Builder()
            .setServiceUuids(serviceUuids)
            .setDeviceName(true, names)
            .setDeviceMac(mac)
            .setAutoConnect(isAutoConnect)
            .setScanTimeOut(10000)
            .build();
    BleManager.getInstance().initScanRule(scanRuleConfig);
  

  Tips：

  • Before scanning the device, scan rules can be configured to filter out the equipment matching the program.
  • What is not configured is the default parameter

• Scan

  void scan(BleScanCallback callback)

    BleManager.getInstance().scan(new BleScanCallback() {
        @Override
        public void onScanStarted(boolean success) {
  
        }
  
        @Override
        public void onScanning(BleDevice bleDevice) {
  
        }
  
        @Override
        public void onScanFinished(List<BleDevice> scanResultList) {
  
        }
    });
  

  Tips:

  • The scanning and filtering process is carried out in the worker thread, so it will not affect the UI operation of the main thread. Eventually, every callback result will return to the main thread.。

• Connect with device

  BluetoothGatt connect(BleDevice bleDevice, BleGattCallback bleGattCallback)

    BleManager.getInstance().connect(bleDevice, new BleGattCallback() {
        @Override
        public void onStartConnect() {
  
        }
  
        @Override
        public void onConnectFail(BleDevice bleDevice, BleException exception) {
  
        }
  
        @Override
        public void onConnectSuccess(BleDevice bleDevice, BluetoothGatt gatt, int status) {
  
        }
  
        @Override
        public void onDisConnected(boolean isActiveDisConnected, BleDevice bleDevice, BluetoothGatt gatt, int status) {
  
        }
    });
  

  Tips:

  • On some types of phones, connectGatt must be effective on the main thread. It is very recommended that the connection process be placed in the main thread.
  • After connection failure, reconnect: the framework contains reconnection mechanism after connection failure, which can configure reconnection times and intervals. Of course, you can also call the connect method in onConnectFail callback automatically.
  • The connection is disconnected and reconnected: you can call the connect method again in the onDisConnected callback method.
  • In order to ensure the success rate of reconnection, it is recommended to reconnect after a period of interval.
  • When some models fail, they will be unable to scan devices for a short time. They can be connected directly through device objects or devices MAC without scanning.

• Connect with Mac

  BluetoothGatt connect(String mac, BleGattCallback bleGattCallback)

    BleManager.getInstance().connect(mac, new BleGattCallback() {
        @Override
        public void onStartConnect() {
  
        }
  
        @Override
        public void onConnectFail(BleDevice bleDevice, BleException exception) {
  
        }
  
        @Override
        public void onConnectSuccess(BleDevice bleDevice, BluetoothGatt gatt, int status) {
  
        }
  
        @Override
        public void onDisConnected(boolean isActiveDisConnected, BleDevice bleDevice, BluetoothGatt gatt, int status) {
  
        }
    });
  

  Tips:

  • This method can attempt to connect directly to the BLE device around the Mac without scanning.
  • In many usage scenarios, I suggest that APP save the Mac of the user's customary device, then use this method to connect, which will greatly improve the connection efficiency.

• Scan and connect

  After scanning the first equipment that meets the scanning rules, it will stop scanning and connect to the device.

  void scanAndConnect(BleScanAndConnectCallback callback)

    BleManager.getInstance().scanAndConnect(new BleScanAndConnectCallback() {
        @Override
        public void onScanStarted(boolean success) {
  
        }
  
        @Override
        public void onScanFinished(BleDevice scanResult) {
  
        }
  
        @Override
        public void onStartConnect() {
  
        }
  
        @Override
        public void onConnectFail(BleDevice bleDevice,BleException exception) {
  
        }
  
        @Override
        public void onConnectSuccess(BleDevice bleDevice, BluetoothGatt gatt, int status) {
  
        }
  
        @Override
        public void onDisConnected(boolean isActiveDisConnected, BleDevice device, BluetoothGatt gatt, int status) {
  
        }
    }); 
  

• Cancel scan

  void cancelScan()

    BleManager.getInstance().cancelScan();
  

  Tips:

  • If this method is called, if it is still in the scan state, it will end immediately, and callback the onScanFinished method.

• Notify

  void notify(BleDevice bleDevice, String uuid_service, String uuid_notify, BleNotifyCallback callback) void notify(BleDevice bleDevice, String uuid_service, String uuid_notify, boolean useCharacteristicDescriptor, BleNotifyCallback callback)

    BleManager.getInstance().notify(
            bleDevice,
            uuid_service,
            uuid_characteristic_notify,
            new BleNotifyCallback() {
                @Override
                public void onNotifySuccess() {
  
                }
  
                @Override
                public void onNotifyFailure(BleException exception) {
  
                }
  
                @Override
                public void onCharacteristicChanged(byte[] data) {
  
                }
            });
  

• Stop Notify

  boolean stopNotify(BleDevice bleDevice, String uuid_service, String uuid_notify) boolean stopNotify(BleDevice bleDevice, String uuid_service, String uuid_notify, boolean useCharacteristicDescriptor)

    BleManager.getInstance().stopNotify(uuid_service, uuid_characteristic_notify);
  

• Indicate

  void indicate(BleDevice bleDevice, String uuid_service, String uuid_indicate, BleIndicateCallback callback) void indicate(BleDevice bleDevice, String uuid_service, String uuid_indicate, boolean useCharacteristicDescriptor, BleIndicateCallback callback)

    BleManager.getInstance().indicate(
            bleDevice,
            uuid_service,
            uuid_characteristic_indicate,
            new BleIndicateCallback() {
                @Override
                public void onIndicateSuccess() {
  
                }
  
                @Override
                public void onIndicateFailure(BleException exception) {
  
                }
  
                @Override
                public void onCharacteristicChanged(byte[] data) {
  
                }
            });
  

• Stop Indicate

  boolean stopIndicate(BleDevice bleDevice, String uuid_service, String uuid_indicate) `boolean stopIndicate(BleDevice bleDevice, String uuid_service,