How to access image view in fragment?

Question

Java

I'm new, don't judge too harshly. I'm trying to do it this way:

public void accInfoFunc(){
        acc_frag = new infoAccount();
        fTrans = getFragmentManager().beginTransaction();
        fTrans.replace(R.id.fragmentCont, acc_frag);
        fTrans.commit();
        ImageView avaInInfo = (ImageView) findViewById(R.id.myAvaInInfo);
        avaInInfo.setImageResource(R.drawable.ic_menu_camera);
        //Picasso.with(this).load(avaUrl).into(avaInInfo);
    }

Crashes with an error:

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageResource(int)' on a null object reference

What is wrong in my code?

Answer 1

Everything is wrong in your code, starting with the naming.
No one outside the fragment should know what views it has inside (encapsulation). Pass all the data to the fragment through setArguments, get it inside using getArguments, set the picture in the onCreateView or onViewCreated method.