CODEWITHSUNDEEP
androidandroid-loadermanager
user7423754
user7423754

Reputation:

Call LoaderManager from class which is not Activity

I'm working on to get contacts from phone, for this purpose I'm using LoaderCallbacks<Cursor> I create a new class with FetchContacts name and implement loaderManager. Now I want when ever I create object of that class loaderManager automatically initialize.
FetchContacts

  public class FetchContacts implements LoaderManager.LoaderCallbacks<Cursor> {
       private Context context;

     FetchContacts(Context ctx){
        context = ctx;
        getLoaderManager().initLoader(0, null, this); // Error: Undefined method
     }  
     // Reset of code like override methods.

MainActivity

     public class MainActivity extends AppCompatActivity {
        protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
           FetchContacts fetchContacts = new FetchContacts(this);
       }
     }

I know the reason of error because FetchContacts is not extend from Activity class. Is it necessary to extend it from Activity class or is there and other method to call it from MainActivity ?

Upvotes: 1

Views: 3435

Answers (1)

Azeem Haider
Azeem Haider

Reputation: 1513

Pass LoaderManager as an Argument as @Mike said.

FetchContacts

  public class FetchContacts implements LoaderManager.LoaderCallbacks<Cursor> {
       private Context context;

     FetchContacts(Context ctx, LoaderManager loaderManager){
        context = ctx;
        loaderManager.initLoader(0, null, this); 
     }  
     // Reset of code like override methods.

MainActivity

     public class MainActivity extends AppCompatActivity {
        protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
           FetchContacts fetchContacts = new FetchContacts(this, getLoaderManager());
       }
     }

Upvotes: 6

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