EasyBle is a framework used for android BLE, this framework makes android Ble operation simpler and supports basic BLE operations, besides, it also support batch writing data and multi connection
allprojects {
repositories {
maven { url 'https://jitpack.io' }
}
}
dependencies {
implementation 'com.github.Ficat:EasyBle:v1.0.0'
}The framework uses BleManager to manager BLE
If you want to open bluetooth, I strongly recommend you call enableBluetooth() rather than toggleBluetooth(true), due to you can receive result message from Activity#onActivityResult if using enableBluetooth() to enable bluetooth
//check if the device supports BLE
BleManager.supportBle(context);
//is Bluetooth turned on?
BleManager.isBluetoothOn();
//open or close bluetooth without showing users a request
//dialog, except some special android devices
BleManager.toggleBluetooth(true);
//open bluetooth with a request dialog, you must handle the
//result in the method onActivityResult() of this activity
BleManager.enableBluetooth(activity,requestCode); BleManager.BleOptions options = new BleManager.BleOptions();
options.loggable = true; //does it print log?
options.connectTimeout = 10000; //connection time out
options.scanPeriod = 12000; //scan period
options.scanDeviceName = "deviceName";
options.scanDeviceAddress = "deviceAddress";
options.scanServiceUuids = serviceUuidArray;
//get ble manager
BleManager bleManager = BleManager.getInstance(this.getApplication(), options);If sdk version >=23, scanning ble must have location permissions
bleManager.startScan(new BleScanCallback() {
@Override
public void onLeScan(BleDevice device, int rssi, byte[] scanRecord) {
String name = device.name;
String address = device.address;
}
@Override
public void onStart(boolean startScanSuccess, String info) {
if (startScanSuccess) {
//start scan successfully
} else {
//fail to start scan, you can see details from 'info'
String failReason = info;
}
}
@Override
public void onFinish() {
}
});Once target remote device has been discovered you can use stopScan() to stop scanning
bleManager.stopScan();You can connect to remote device by device address or BleDevice object
BleConnectCallback bleConnectCallback = new BleConnectCallback() {
@Override
public void onStart(boolean startConnectSuccess, String info, BleDevice device) {
if (startConnectSuccess) {
//start to connect successfully
} else {
//fail to start connection, see details from 'info'
String failReason = info;
}
}
@Override
public void onTimeout(BleDevice device) {
}
@Override
public void onConnected(BleDevice device) {
}
@Override
public void onDisconnected(BleDevice device) {
}
};
//connect to the remote device by BleDevice object
bleManager.connect(bleDevice, bleConnectCallback);
//connect to the remote device by address
bleManager.connect(address, bleConnectCallback)Use one of the following methods to disconnect from remote device
//disconnect from the specific remote device by BleDevice object
bleManager.disconnect(bleDevice);
//disconnect from the specific remote device by address
bleManager.disconnect(address);
//disconenct all connected devices
bleManager.disconnectAll();Both notification and indication use the following method to set notfication or indication
bleManager.notify(bleDevice, serviceUuid, notifyUuid, new BleNotifyCallback() {
@Override
public void onCharacteristicChanged(byte[] data, BleDevice device) {
}
@Override
public void onFail(int failCode, String info, BleDevice device) {
}
});When you want to cancel notification or indication, you can call cancelNotify()
bleManager.cancelNotify(bleDevice, notifyUuid); bleManager.write(bleDevice, serviceUuid, writeUuid, data, new BleWriteCallback() {
@Override
public void onWrite(byte[] data, BleDevice device) {
}
@Override
public void onFail(int failCode, String info, BleDevice device) {
}
});if the length of the data you wanna deliver to remote device is larger than MTU(default 20), you can use the following method to write by batch
bleManager.writeByBatch(bleDevice, serviceUuid, writeUuid, data, lengthPerPackage, new BleWriteByBatchCallback() {
@Override
public void writeByBatchSuccess(byte[] data, BleDevice device) {
}
@Override
public void onFail(int failCode, String info, BleDevice device) {
}
});You must call destroy() to release some resources after BLE communication end
bleManager.destroy(); //get service infomations which the remote supports,it may return
//null if the remote device is not connected
bleManager.getDeviceServices(bleDevice);
//read characteristic data
bleManager.read(bleDevice, serviceUuid, readUuid, bleReadCallback);
//read the remote device's rssi
bleManager.readRssi(bleDevice, bleRssiCallback);
//set mtu
bleManager.setMtu(bleDevice, mtu, bleMtuCallback);
//get a list of current connected devices
bleManager.getConnectedDevices();
//check if the local bluetooth has connected to the remote device
bleManager.isConnected(address);Copyright 2018 Ficat
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