CODEWITHSUNDEEP
javaandroidandroid-fragments
Lior
Lior

Reputation: 393

incompatible types: HomeFragment cannot be converted to Fragment in Android

I'm getting an error in this part of code:

private void displayView(int position) {
    // update the main content by replacing fragments
    Fragment fragment = null;
    switch (position) {
        case 0:
            fragment = new HomeFragment();
            break;
        case 1:
            fragment =new FindPeopleFragment();
            break;
        case 2:
            fragment = new PhotosFragment();
            break;
        case 3:
            fragment = new CommunityFragment();
            break;
        case 4:
            fragment = new PagesFragment();
            break;
        case 5:
            fragment = new WhatsHotFragment();
            break;

        default:
            break;
    }

    if (fragment != null) {
        FragmentManager fragmentManager = getFragmentManager();
        fragmentManager.beginTransaction()
                .replace(R.id.frame_container, fragment).commit();

        // update selected item and title, then close the drawer
        mDrawerList.setItemChecked(position, true);
        mDrawerList.setSelection(position);
        setTitle(navMenuTitles[position]);
        mDrawerLayout.closeDrawer(mDrawerList);
    } else {
        // error in creating fragment
        Log.e("MainActivity", "Error in creating fragment");
    }
}

I get

error: incompatible types: HomeFragment cannot be converted to Fragment

this is the imports:

package liorsiag.lgbt;
import android.app.FragmentManager;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import java.util.ArrayList;

and this is the class title:

public class MainActivity extends FragmentActivity {
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

No matter what I've tried I still get this error

I've tried a lot of navigation drawer tutorials, but none of them seem to work.

Upvotes: 37

Views: 67750

Answers (10)

BugsCreator
BugsCreator

Reputation: 519

i having same issue so i updated

implementation 'androidx.appcompat:appcompat:1.2.0'

to

implementation 'androidx.appcompat:appcompat:1.3.0-beta01'

it is working fine now

Upvotes: 0

Shripada
Shripada

Reputation: 6522

If you are using support library, you should ensure to import both Fragment and FragmentManager from the support library. You will also need to ensure to load the support fragment manager.

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
//other imports here...

public class SomeActivity extends AppCompatActivity {

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

        FragmentManager fm = getSupportFragmentManager();
        Fragment fragment = fm.findFragmentById(R.id.fragment_container);

        if(fragment == null) {
            fragment = new SomeFragment();
            fm.beginTransaction().add(R.id.fragment_container, fragment).commit();
        }

    }
}

Upvotes: 0

Faizan Haidar Khan
Faizan Haidar Khan

Reputation: 1215

In Android Studio 2.3 getSupportFragmentManager works with android.support.v4.app but android studio 3.1 you have to use getFragmentManager enter image description here

Upvotes: 1

Mehul Raj
Mehul Raj

Reputation: 21

you just have to import android.support.v4.app.Fragment; in the all the FragmentClass();. that's it.

Upvotes: 2

zozelfelfo
zozelfelfo

Reputation: 3776

This seems to be an import problem.

When using getFragmentMangager(), make sure that your Fragment classes extend android.app.Fragment class.

If by any chance you are using android.support.v4.app.Fragment (see your imports), then you need to use getSupportFragmentManager() instead

Hope it helps

Upvotes: 78

Negatu
Negatu

Reputation: 1

import android.app.Fragment; works with getFragmentManager() method but before you have to remove the import android.support.v4.app.Fragment;

Upvotes: 0

saigopi.me
saigopi.me

Reputation: 14938

use getSupportFragmentManager() Instead of getFragmentManager()

getSupportFragmentManager()
    .beginTransaction()
    .replace(in.jama.app.R.id.container, new Fragment())
    .commit();

Upvotes: 2

Harunduet
Harunduet

Reputation: 947

In my case i have changed line-1 with line-2

Line-1: import android.app.Fragment;

Line-2: import android.support.v4.app.Fragment;

Its working

Upvotes: 3

Ammar Rajab
Ammar Rajab

Reputation: 75

In your HomeFragment class

replace: 

import android.app.Fragment;

with: 

import android.support.v4.app.Fragment;

Upvotes: 4

ramuta
ramuta

Reputation: 260

Try changing

import android.app.Fragment;

to

import android.support.v4.app.Fragment;

Use classes from that support lib for all other imports too. Also getSupportFragmentManager() as mentioned in the other answer.

Upvotes: 10

Related Questions