android - roboguice how to inject custom class -

Hi I am currently using roboguice as we know, we use encapsulation to inject in class As in

 @InjectView (R.id.list) ListView   
 @ Injection Nation works because I am a robo activity or a robo class  
 My question is if I want to inject a custom class, which  
  public class CustomUtilManager {} < / Code>  
, then I want to inject it into Robo Activity  
 My second question is if I have a class, then this is not something Also sub-class of Robo Class  
  MyOwnClass {} of public class   
 How can I get the injector and inject the injection class I , Such as custom eutilizer  
 that is how I can say  
  public class MyOwnClass {@Inject CustomUtilManager customUti LManager; }    
 
 
 injection of custom class in Robo Activity  
 Inject a custom class by using the  @ Injects  annotation, but the injected square must  one  complete the following conditions:  
 < Li> Custom class is a default constructor (with no arguments)  
 In the custom class  is a  injection maker  
 Handles (more complex)   
 The easiest way is to use a default constructor explicitly if your constructor requires logic, then it should be injected:  
  public class custom class {@Injected public CustomClass (reference references, other others) {...}}   
  @ injection on constructor  Notice the annotation. The square of each argument is also injected by robogues. Should be. RoboGuice (for example,  context ) is provided outside of many injection boxes for Android classes.  
 Injecting  inside  a custom class  
 If you create an example of your custom class with robogues (for example  @Inject  Annotation), all the fields marked with  @ injected  will be automatically injected.  
 If you want to use the  new custom class () , then you have to inject yourself:  
  public class custom class {@ Injection other others; Phu Fu; Public Custom Class (Reference Reference) {Final RoboInjector Injector = RoboGuice.getInjector (reference); // injector.injectMembersWithoutViews (this) will inject all the fields marked with @ Inject annotation; // This will make an example of Fu Fu = Injector.Get Instance (Fu Class); }}   
 Note that you must pass your constructor to  context  to get the injector.