When it comes to deploying the connectors to the emulator, I just run the adb install -r <path/to/connector.apk> from shell. I don't know, how to install it from eclipse directly, because there is no activity (in fact there is the shared info screen) to run. If someone knows a better way, please contact me.
Just use:
ConnectorSpec c = this.getSpec(context);
Eg. to set balance you could use this code:
String balance = getBalanceFromWebService(); // TODO implement me
ConnectorSpec c = this.getSpec(context);
c.setBalance(balance);
Log.d(TAG, "balance: " + c.getBalance());
In updateSpec() I get a ConnectorSpec object and I assumed that this is where I can update the balance since there is an setBalance method. As I do not have a ConnectorSpec object in doUpdate, I have to store the reference when updateSpec() initSpec() gets called and reuse it in doUpdate(). That might be the problem, but I haven't found another way so far. Is that the right method?
Wrong.
You must not do any network IO in updateSpec() or initSpec().
Just set the basic capabilities, features and settings in updateSpec() and initSpec().
Get the ConnectorSpec reference with this.getSpec(context) as mentioned above.
See DeveloperHelp for more details.