I have already read things about that but can't find a way to fix my problem anyway (Beginner here...) So, I'm currently developping an Android Studio App. I have just done fragments to have different tab on a screen. Previously I have done a "bluetooth and a bluetoothService" activity who was perfectly working. However, since I have implements these fragments I got this error
java.lang.InstantiationException: java.lang.Class<com.example.thibaud.dogbotapp.bluetoothService> has no zero argument consde here
So I have tried to do an empty constructor but I don't know how to do it properly...
This is the begin of my bluetoothService class :
public class bluetoothService {
private static final String TAG = "bluetoothService";
private static final String appName = "DogBot";
private static final UUID MY_UUID_INSECURE =
UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
private final BluetoothAdapter btAdapter;
Context mContext;
private AcceptThread mInsecureAcceptThread;
private ConnectThread mConnectThread;
private BluetoothDevice mmDevice;
private UUID deviceUUID;
ProgressDialog mProgressDialog;
private ConnectedThread mConnectedThread;
/*public bluetoothService(Context context) {
mContext = context;
btAdapter = BluetoothAdapter.getDefaultAdapter();
start();
}*/
start() method here :
public synchronized void start() {
Log.d(TAG, "start");
// Cancel any thread attempting to make a connection
if (mConnectThread != null) {
mConnectThread.cancel();
mConnectThread = null;
}
if (mInsecureAcceptThread == null) {
mInsecureAcceptThread = new AcceptThread();
mInsecureAcceptThread.start();
}
}
Well, first post here sorry if it's not perfect, hope you guys will be able to help ! Thanksar
A zero-argument constructor is declared like so:
public ClassName() {
//Constructor tasks go here
}
Hope it helps
EDIT:
And yes, as davidxxx stated, you should always start class names with upper case letters. eg ClassName
as opposed to className
. Variable names, however, start with lower case such as variableName
.
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