Type not matching error

Question

I tried to create Viewpager following the answer How to implement a ViewPager with different Fragments / Layouts

But I'm getting error FirstFragment,SecondFragment,ThirdFragment cannot be converted to Fragment in following method

    @Override
    public Fragment getItem(int pos) {
        switch(pos) {
        case 0: return FirstFragment.newInstance("FirstFragment, Instance 1");
        case 1: return SecondFragment.newInstance("SecondFragment, Instance 1");
        case 2: return ThirdFragment.newInstance("ThirdFragment, Instance 1");
        case 3: return ThirdFragment.newInstance("ThirdFragment, Instance 2");
        case 4: return ThirdFragment.newInstance("ThirdFragment, Instance 3");
        default: return ThirdFragment.newInstance("ThirdFragment, Default");
        }
    }

Seems simple class import issue. Please check if your class is importing same fragment class as you FirstFragment, SecondFragment class etc. — Rohit5k2, Aug 18 '15 at 12:51
check your fragment classes whether they extended with fragments or not ? — King of Masses, Aug 18 '15 at 12:52
@Rohit5k2: thank you for inputs. I imported different classes solved issue — Deepak John, Aug 18 '15 at 13:02

Garf1eld · Accepted Answer · 2015-08-18T12:59:42.330

0

Look on yor imports it must look like :

import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;

or:

import android.app.Fragment;
import android.view.ViewPager;

Including all fragments.

Please, check for correct import FirstFragment,SecondFragment etc

edited Aug 18 '15 at 12:59

answered Aug 18 '15 at 12:55

Garf1eld

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score 0 · Answer 2 · answered Aug 18 '15 at 14:05

Android Developers site really has very good explanation of ViewPager. You should check it out: http://developer.android.com/training/animation/screen-slide.html

Here is an example I wrote:

activity_screen_slide.xml

<android.support.v4.view.ViewPager
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

Java Code:

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
...

public class ScreenSlidePagerActivity extends FragmentActivity {

    private static final int NUM_PAGES = 2;
    private ViewPager mPager;
    private PagerAdapter mPagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_slide);

        mPager = (ViewPager) findViewById(R.id.pager);
        mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
        mPager.setAdapter(mPagerAdapter);
    }

    @Override
    public void onBackPressed() {
        if (mPager.getCurrentItem() == 0) {
            super.onBackPressed();
        } else {
            mPager.setCurrentItem(mPager.getCurrentItem() - 1);
        }
    }

    private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
        public ScreenSlidePagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            //Create these fragments with your preferable names
            switch (position) {
                case 0:
                    return new ScreenSlidePageFragment();
                case 1:
                    return new ScreenSlidePageFragment2();
                default:
                    break;
            }
        }

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

And here is one of your views that should look like it where fragment_ screen_slide_page is one of your layouts:

import android.support.v4.app.Fragment;
...

public class ScreenSlidePageFragment extends Fragment {

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

        ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_screen_slide_page, container, false);

        return rootView;
    }
}

You should really read the android developers site for further details.

Type not matching error

2 Answers2