@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 onError() {
mListeners.dispatch(
new Dispatcher<HeartRateListener>() {
@Override
public void dispatch(HeartRateListener listener) {
listener.onError();
}
});
}
private void onDisconnect() {
mStatus = Status.DISCONNECTED;
mLastValue = -1;
mListeners.dispatch(
new Dispatcher<HeartRateListener>() {
@Override
public void dispatch(HeartRateListener listener) {
listener.onDisconnected();
}
});
}
@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);
}