CODEWITHSUNDEEP
androiddatabaseandroid-activityandroid-fragments
Motheus
Motheus

Reputation: 543

What's the appropiate method to store values from fragments?

I'm new to android and fragments, so my question is this about the appropriate method to store values in the app database.

Calling a fragment from activity and passing the database handler? 

ExampleFragment fragment = (ExampleFragment) getFragmentManager().findFragmentById(R.id.example_fragment);
fragment.<specific_function_name>(dbhandler);

or calling an activity method from the fragment?

import mainActivity;
...
mainActivity currentActivity=(mainActivity )getActivity();
currentActivity.storeValures(val,val2...)

or just setting a database handler on every fragment?...

Or maybe there is a better design to deal with this?

Thanks in advance for your answers.

Upvotes: 0

Views: 62

Answers (1)

maaz
maaz

Reputation: 224

Since database manager will be universal for the entire app, you can create a DataHandler class, that will have singleton Datahandler instance 

public class MyDatabaseHandler extends SQLiteOpenHelper{
    private static MyDatabaseHandler databaseHandlerInstance; 

    public static synchronized MyDatabaseHandler getInstance(Context context) {
      if(databaseHandlerInstance ==  null)
         databaseHandlerInstance = new MyDatabaseHandler(Context context);

      return databaseHandlerInstance;
    } 

    public MyDatabaseHandler(Context context){
        // Call to super class
        //
    }

   // ..... onCreate calls
}

This way you can use dbhandler from anywhere in your app like MyDatabaseHandler.getInstance(context)

I use this approach ...

Upvotes: 1

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