@Override
public void onCharacteristicChanged(
BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
Log.d("characteristic=" + characteristic.getUuid());
int format;
int flag = characteristic.getProperties();
if ((flag & 0x01) != 0) {
format = BluetoothGattCharacteristic.FORMAT_UINT16;
} else {
format = BluetoothGattCharacteristic.FORMAT_UINT8;
}
int previousValue = mLastValue;
int value = characteristic.getIntValue(format, 1);
if (value < 50) {
// This is probably a false measurement, consider this as a disconnect
if (mStatus == Status.CONNECTED) {
// Disconnect
onDisconnect();
}
return;
}
mLastValue = value;
Log.d("heartRate=" + mLastValue);
if (mStatus != Status.CONNECTED) {
mStatus = Status.CONNECTED;
// Inform listeners
mListeners.dispatch(
new Dispatcher<HeartRateListener>() {
@Override
public void dispatch(HeartRateListener listener) {
listener.onConnected();
}
});
}
if (previousValue != mLastValue) {
// Inform listeners
mListeners.dispatch(
new Dispatcher<HeartRateListener>() {
@Override
public void dispatch(HeartRateListener listener) {
listener.onHeartRateChange(mLastValue);
}
});
}
}
private void onClientCharacteristicConfigurationDescriptorFound(
BluetoothGattCharacteristic characteristic, BluetoothGattDescriptor descriptor) {
Log.d();
mBluetoothGatt.setCharacteristicNotification(characteristic, true);
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
mBluetoothGatt.writeDescriptor(descriptor);
}
protected Uri getRideUri() {
if (getCallbacks() == null) {
Log.w("null callbacks");
return null;
}
return getCallbacks().getRideUri();
}
private void onHeartRateMeasurementCharacteristicFound(
BluetoothGattCharacteristic characteristic) {
Log.d();
boolean found = false;
for (BluetoothGattDescriptor descriptor : characteristic.getDescriptors()) {
Log.d("descriptor=" + descriptor.getUuid());
if (getAssignedNumber(descriptor.getUuid())
== GATT_DESCRIPTOR_CLIENT_CHARACTERISTIC_CONFIGURATION) {
onClientCharacteristicConfigurationDescriptorFound(characteristic, descriptor);
found = true;
break;
}
}
if (!found) {
onClientCharacteristicConfigurationDescriptorNotFound();
}
}
protected void onHeartRateServiceFound(BluetoothGattService service) {
Log.d();
for (BluetoothGattCharacteristic characteristic : service.getCharacteristics()) {
Log.d("characteristic=" + characteristic.getUuid());
boolean found = false;
if (getAssignedNumber(characteristic.getUuid())
== GATT_CHARACTERISTIC_HEART_RATE_MEASUREMENT) {
// Found heart read measurement characteristic
onHeartRateMeasurementCharacteristicFound(characteristic);
found = true;
break;
}
if (!found) {
onHeartRateMeasurementCharacteristicNotFound();
}
}
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
Log.d("status=" + LogUtil.getConstantName(BluetoothGatt.class, status, "GATT_"));
List<BluetoothGattService> services = gatt.getServices();
boolean found = false;
for (BluetoothGattService service : services) {
Log.d(service.getUuid().toString());
if (getAssignedNumber(service.getUuid()) == GATT_SERVICE_HEART_RATE) {
// Found heart rate service
onHeartRateServiceFound(service);
found = true;
break;
}
}
if (!found) {
onHeartRateServiceNotFound();
}
}
@Override
public void disconnect() {
Log.d();
if (mBluetoothGatt != null) {
mBluetoothGatt.close();
mBluetoothGatt.disconnect();
mBluetoothGatt = null;
}
mBluetoothDevice = null;
onDisconnect();
}
@Override
public void setBluetoothDevice(BluetoothDevice bluetoothDevice) {
Log.d();
mStatus = Status.CONNECTING;
// Inform listeners
mListeners.dispatch(
new Dispatcher<HeartRateListener>() {
@Override
public void dispatch(HeartRateListener listener) {
listener.onConnecting();
}
});
mBluetoothDevice = bluetoothDevice;
mBluetoothGatt = mBluetoothDevice.connectGatt(mContext, true, mBluetoothGattCallback);
}
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
Log.d(
"status="
+ LogUtil.getConstantName(BluetoothGatt.class, status, "GATT_")
+ " newState="
+ LogUtil.getConstantName(BluetoothProfile.class, newState, "STATE_"));
switch (newState) {
case BluetoothProfile.STATE_CONNECTED:
mBluetoothGatt.discoverServices();
break;
case BluetoothProfile.STATE_DISCONNECTED:
onDisconnect();
break;
}
}
private void onClientCharacteristicConfigurationDescriptorNotFound() {
Log.d();
onError();
}
private void onHeartRateMeasurementCharacteristicNotFound() {
Log.d();
onError();
}
protected void onHeartRateServiceNotFound() {
Log.d();
onError();
}