using viewpager , image is not showing

Question

I have the below code trying to use ViewPager.

The problem is the image is not being displayed, I guess the problem is the fragment is not being accessed ( or "called") can you identify why?

I have added a print in the Fragment method to check if it's been accessed.

This the ViewPager adapter, the getItem should return the value of the fragment, or there is something wrong ?

 public class DemoCollectionPagerAdapter extends FragmentStatePagerAdapter {
     public static final String ARG_OBJECT = "Person_List";
     private ArrayList<Listitem> personArrayList;

     public DemoCollectionPagerAdapter(FragmentManager fm, ArrayList<Listitem> personArrayList)
     {
         super(fm);
         Log.d("s", "adapterview");
         this.personArrayList = personArrayList;
     }

     @Override
     public Fragment getItem(int i) {
         return DemoObjectFragment.newInstance(this.personArrayList.get(i));
     }

     @Override
     public int getCount() {
         return 1;
     }

This is the rest of the code

public class SingleViewActivity extends FragmentActivity {
    ImageView imageView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_page_view);

        ArrayList<Listitem> personArrayList = new ArrayList<Listitem>();

        ViewPager mViewPager = (ViewPager) findViewById(R.id.pager);
        Log.d("s", "singleview");
        Listitem item = new Listitem("1", "http://developer.android.com/assets/images/android_logo.png");
        personArrayList.add(item);

        DemoCollectionPagerAdapter mDemoCollectionPagerAdapter = new DemoCollectionPagerAdapter(getSupportFragmentManager(), personArrayList);
        mViewPager.setAdapter(mDemoCollectionPagerAdapter);
    }
}

public static class DemoObjectFragment extends Fragment {
    public static final String ARG_PERSON_LIST = "Person_List";
    private Listitem person;

    public static DemoObjectFragment newInstance(Listitem  items) {
        DemoObjectFragment f = new DemoObjectFragment();
        Bundle args = new Bundle();
        args.putParcelable(ARG_PERSON_LIST, items);
        f.setArguments(args);
        System.out.print("instance1");
        return f;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle args = getArguments();

        if (args.containsKey(ARG_PERSON_LIST)) {
            this.person = args.getParcelable(ARG_PERSON_LIST);
        } else {
            this.person = null;
        }

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View rootView = inflater.inflate(
                        R.layout.fragment_collection_object, container, false);
        ImageView imageView = (ImageView) rootView.findViewById(R.id.funnyimage);

        Bundle args = new Bundle();

        this.person = args.getParcelable("Person_List");

        System.out.print("here1");

        if (person != null) {
            Picasso.with(getActivity())
                .load(person.url)
                .placeholder(R.drawable.logo)
                .fit()
                .noFade()
                .into(imageView);
            Log.i("PersonsActivity", String.valueOf(person.url));
        }

        return rootView;

    }
}

Did you check with: Picasso.with(getActivity()).load(person.url) .placeholder(R.drawable.logo).into(imageView); ? — Partha Chakraborty, Jan 15 '16 at 14:47
@ParthaChakraborty but its not accessing on creatview() of fragment in the first place. — Moudiz, Jan 15 '16 at 15:18
@KristyWelsh check plz the part of full code , which you part you want exactly — Moudiz, Jan 15 '16 at 15:19

score 2 · Accepted Answer · answered Jan 15 '16 at 16:56

2

Delete these lines

Bundle args = new Bundle();

this.person = args.getParcelable("Person_List");

this.person will be null because you are trying to get the Parcelable from an empty Bundle.

Therefore, this will not be entered.

if (person != null) {

The reason you don't need those lines is because this.person is correctly being loaded inside onCreate. You don't need to assign it from with onCreateView.

answered Jan 15 '16 at 16:56

OneCricketeer

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Your the man it worked , thanks . now as you remeber we are loading the image staticly. how to receive from the other activity ? ill post a question about it if you want okay ? – Moudiz Jan 15 '16 at 17:01

using viewpager , image is not showing

1 Answers1