public void read(
UUID serviceUUID, UUID characteristicUUID, Callback successCallback, Callback failCallback) {
if (gatt == null) {
failCallback.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findReadableCharacteristic(service, characteristicUUID);
if (characteristic == null) {
failCallback.invoke("Characteristic " + characteristicUUID + " not found.");
} else {
readCallback = successCallback;
readFailCallback = failCallback;
if (!gatt.readCharacteristic(characteristic)) {
readCallback = null;
failCallback.invoke("Read failed");
}
}
}
