Leverage Implicit Injection

Implicit Injection is a less verbose form of dependency injection which infers the ID using the field name. It's activated on an `IckleActivity` using `@InjectAll` which assumes all fields to be candidates for injection.

@InjectAll
@Fullscreen
@Layout(R.layout.act_login)
public class LoginActivity extends IckleActivity {
}

To remove a field from being an injection candidate, annotated it with @IgnoreInjection.

@InjectAll
@Fullscreen
@Layout(R.layout.act_login)
public class LoginActivity extends IckleActivity {

    @IgnoreInjection
    private String TAG = LoginActivity.class.getSimpleName();
}

####1. Injecting Views And Resources

To inject views and resources implicitly, simply mirror the view or resource ID in the field name.

@InjectAll
@Fullscreen
@Layout(R.layout.act_login)
public class LoginActivity extends IckleActivity {

    private EditText edt_username;
    private EditText edt_password;
    private Button btn_login;
    private Drawable login_banner;
    private Animation fade_in;

    @Layout(R.layout.section_forgot_password)
    private ViewGroup forgotPassword;

    ...
}

Use @Layout for injecting layouts which exist outside the current context.

####2. Injecting System Services

To inject system services implicitly, mirror the name of the associated constant on Context in the field name.

@InjectAll
@Layout(R.layout.act_contact)
@Title(R.string.ttl_act_contact)
public class ContactActivity extends IckleActivity {

    private TelephonyManager telephony_service;

    ...
}

####3. Injecting Ickle Services

To inject Ickle Services implicitly, simply declare a member with the service contract.

@InjectAll
@Layout(R.layout.act_contact)
@Title(R.string.ttl_act_contact)
public class ContactActivity extends IckleActivity {

    private BindManager bindManager;

    ...
}

####4. Injecting Application Instances

To inject application instances implicitly, annotate the application contract or the custom application instance with @ApplicationContract.

######Contract

@ApplicationContract
public interface ApplicationService {
    ...
}

######Implementation

public class ApplicationServiceImpl extends android.app.Application 
implements ApplicationService {
    ...
}

######Declaration

<manifest 
...
    <application 
            android:name="com.sample.app.ApplicationServiceImpl"
...

######Injection

@InjectAll
@Layout(R.layout.act_home)
@Title(R.string.ttl_act_home)
public class HomeActivity extends IckleActivity {

    private ApplicationService app;

    ...
}

####5. Injecting POJOs

To inject POJOs implicitly, annotate the POJO contract or the implementation with @Pojo.

######Contract

@Pojo(BasicAccountService.class)
public interface AccountService {
    ...
}

######Implementation

public class BasicAccountService implements AccountService {
    ...
}

######Injection

@InjectAll
@Fullscreen
@Layout(R.layout.act_login)
public class LoginActivity extends IckleActivity {

    private AccountService accountService;

    ...
}