diff options
Diffstat (limited to 'src/bluetooth/qlowenergycontroller_android.cpp')
| -rw-r--r-- | src/bluetooth/qlowenergycontroller_android.cpp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/bluetooth/qlowenergycontroller_android.cpp b/src/bluetooth/qlowenergycontroller_android.cpp index 20b6519c..6cd1ced1 100644 --- a/src/bluetooth/qlowenergycontroller_android.cpp +++ b/src/bluetooth/qlowenergycontroller_android.cpp @@ -45,6 +45,7 @@ #include <QtBluetooth/QLowEnergyDescriptorData> #include <QtBluetooth/QLowEnergyAdvertisingData> #include <QtBluetooth/QLowEnergyAdvertisingParameters> +#include <QtBluetooth/QLowEnergyConnectionParameters> QT_BEGIN_NAMESPACE @@ -771,8 +772,25 @@ void QLowEnergyControllerPrivate::stopAdvertising() void QLowEnergyControllerPrivate::requestConnectionUpdate(const QLowEnergyConnectionParameters ¶ms) { - Q_UNUSED(params); - qCWarning(QT_BT_ANDROID) << "Connection update not implemented for Android"; + // Possible since Android v21 + // Android does not permit specification of specific latency or min/max + // connection intervals (see BluetoothGatt.requestConnectionPriority() + // In fact, each device manufacturer is permitted to change those values via a config + // file too. Therefore we can only make an approximated guess (see implementation below) + // In addition there is no feedback signal (known bug) from the hardware layer as per v24. + + // TODO recheck in later Android releases whether callback for + // BluetoothGatt.requestConnectionPriority() was added + + if (role != QLowEnergyController::CentralRole) { + qCWarning(QT_BT_ANDROID) << "On Android, connection requests only work for central role"; + return; + } + + bool result = hub->javaObject().callMethod<jboolean>("requestConnectionUpdatePriority", + "(D)Z", params.minimumInterval()); + if (!result) + qCWarning(QT_BT_ANDROID) << "Cannot set connection update priority"; } // Conversion: QBluetoothUuid -> java.util.UUID |