My base POJO class:
public class BaseDao {
public BaseDao() {
}
// ...
}
My extends POJO class:
public class KelvinDao extends BaseDao {
public KelvinDao () {
super();
}
// ...
}
I want to use KelvinDao in a service like that:
public class HanKelvinHandler extends HttpRequestHandler {
@Inject
private KelvinDao mKelvinDao;
public void treatGet() {
mKelvinDao.blabla(); !!! mKelvinDao is always NULL
}
It's really simple but it doesn't work :(
Thank you guys for your help!
How are you creating HanKelvinHandler? If you're doing it within a subclass of a RoboGuice class, such as RoboActivity, then it should just work. Example:
public class MyActivity extends RoboActivity
{
@Inject
private HanKelvinHandler m_handler;
[...]
}
Otherwise (i.e., you're creating it within another POJO), you're in regular Guice land, and I believe you will need to use the injector to get an instance of it. Example:
public class MyClass
{
public void doSomething()
{
Injector injector = Guice.createInjector( new YourGuiceBindings() );
HanKelvinHandler handler = injector.getInstance( HanKelvinHandler.class );
handler.treatGet(); // mKelvinDao should be good now
}
}
If you haven't seen the use of the injector before, or you don't know what to put for YourGuiceBindings(), then you may need to read the following:
https://github.com/roboguice/roboguice/wiki/Simple-Custom-Binding
https://code.google.com/p/google-guice/wiki/GettingStarted
It seems like there should be a way to do this without using the injector, but I don't know.
