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Short black flashs when switching fragments in navigation drawer


Short black flashs when switching fragments in navigation drawer

By : Szabi
Date : November 22 2020, 10:54 AM
help you fix your problem After last edit i got a better description of the problem and found a good solution(at least for me) link: DrawerLayout's item click - When is the right time to replace fragment?
code :
private class DrawerItemClickListener implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
    drawerLayout.closeDrawer(drawerList);
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            switchFragments(position); // your fragment transactions go here
        }
    }, 200);
}


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Issue with switching fragments while using navigation drawer

Issue with switching fragments while using navigation drawer


By : Bosgrand LTD.
Date : March 29 2020, 07:55 AM
it should still fix some issue im having an issue with the navigation drawer. I am using eclipse and using the code it provides for the drawer. I have managed to add additional links to the drawer. When I click on them, the title (in the action bar) changes correctly, but the information doesnt change. I have created all the fragments inside the MainActivity.java file. Below is the code from my MainActivity.java... , What is this code:
code :
fragmentManager.beginTransaction()
        .replace(R.id.container, SuikodenFragment.newInstance(position + 1))
        .replace(R.id.container, SuikodenIIFragment.newInstance(position + 1))
        .replace(R.id.container, SuikodenIIIFragment.newInstance(position + 1))
        .replace(R.id.container, SuikodenIVFragment.newInstance(position + 1))
        .replace(R.id.container, SuikodenVFragment.newInstance(position + 1))
        .commit();
switch(position){
case 0:
 fragmentManager.beginTransaction()
        .replace(R.id.container, SuikodenFragment.newInstance(position + 1)).commit();
//similar for others
}
Switching fragments in navigation drawer

Switching fragments in navigation drawer


By : user3216195
Date : March 29 2020, 07:55 AM
it fixes the issue When you created the Fragment with the wizard you left checked a box to create a listener.
So you get this error:
code :
must implement
OnFragmentInteractionListener
try {
    mListener = (OnFragmentInteractionListener) activity;
} catch (ClassCastException e) {
    throw new ClassCastException(activity.toString()
            + " must implement OnFragmentInteractionListener");
}
Drawer NavigationView + Fragments with viewpager, how to avoid caching data when switching fragments in navigation drawe

Drawer NavigationView + Fragments with viewpager, how to avoid caching data when switching fragments in navigation drawe


By : Pawat Tanavikrankoon
Date : March 29 2020, 07:55 AM
I hope this helps . Finally fixed.
In my onCreate() method of which fragment implemented LoaderManager, I did this
code :
  getLoaderManager().initLoader(0, null, this);
        if(!getLoaderManager().getLoader(0).isReset()) {
            getLoaderManager().restartLoader(0, null, this);
        }
Switching Fragments in navigation drawer using onNavigationItemSelected()

Switching Fragments in navigation drawer using onNavigationItemSelected()


By : jenibaa
Date : March 29 2020, 07:55 AM
Hope that helps By your logcat, error is:
com.internetwarz.sploon.MainActivity@3caae0bc must implement OnFragmentInteractionListener
code :
/**
 * This interface must be implemented by activities that contain this
 * fragment to allow an interaction in this fragment to be communicated
 * to the activity and potentially other fragments contained in that
 * activity.
 */
public interface OnFragmentInteractionListener {
    // TODO: Update argument type and name
    void onFragmentInteraction(Uri uri);
}
public class MainActivity extends AppCompatActivity 
    implements NavigationView.OnNavigationItemSelectedListener,
               FacebookFragment.OnFragmentInteractionListener {

    ....

    // Add the method below to MainActivity.java
    private void onFragmentInteraction(Uri uri) {
        // Do something or just return
        Toast.makeText(this, "Success", Toast.LENGTH_SHORT).show();
    }
}
Switching between activities and fragments in navigation drawer

Switching between activities and fragments in navigation drawer


By : fkubis
Date : March 29 2020, 07:55 AM
help you fix your problem Have you tried doing the same thing you did with the optionItems and preventing the code related to the fragment to be executed when starting an Activity:
code :
public class BaseDrawerActivity extends AppCompatActivity  {

private DrawerLayout drawerLayout;
private NavigationView nvDrawer;
private ActionBarDrawerToggle actionBarDrawerToggle;

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

    drawerLayout = findViewById(R.id.drawer);
    actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.open, R.string.close);
    drawerLayout.addDrawerListener(actionBarDrawerToggle);
    actionBarDrawerToggle.syncState();

    nvDrawer = findViewById(R.id.nvgView);
    // Setup drawer view
    setupDrawerContent(nvDrawer);

    getSupportActionBar().setDisplayShowHomeEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

//Menu created for cart and search icons
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main_menu, menu);
    return super.onCreateOptionsMenu(menu);
    //return true;
}

//This method is design only for cart and search icons
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if(actionBarDrawerToggle.onOptionsItemSelected(item)){
        return true;
    } else if (id == R.id.cart) {
        Intent intent = new Intent(getApplicationContext(), CartActivity.class);
        startActivity(intent);
    } else if (id == R.id.search) {
Intent intent = new Intent(getApplicationContext(), SearchActivity.class);
        startActivity(intent);
    }
    return super.onOptionsItemSelected(item);
}

//This method is to set up the drawer content/menu
private void setupDrawerContent(NavigationView navigationView) {
    navigationView.setNavigationItemSelectedListener(
            new NavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(MenuItem menuItem) {
                    selectDrawerItem(menuItem);
                    return true;
                }
            });
}

public void selectDrawerItem(MenuItem menuItem) {
    // Here we create a new fragment and specify the fragment to show based on nav item clicked
    Fragment fragment = null;
    Class fragmentClass;
    switch(menuItem.getItemId()) {
        case R.id.nav_home:
            fragmentClass = HomeFragment.class;
            break;
        case  R.id.nav_cat:
            fragmentClass = CatalogFragment.class;
            break;
        case  R.id.nav_logout:
            fragmentClass = CatalogFragment.class;
            break;

        case R.id.nav_login:
             Intent intent = new Intent(getApplicationContext(), OtherActivity.class);
            startActivity(intent);
            break;
        case R.id.nav_profile:
             Intent intent = new Intent(getApplicationContext(), ProfileActivity.class);
             startActivity(intent);
             break;
        default:
            fragmentClass = HomeFragment.class;
    }
    //Code related to fragment should not execute when choosing to start an Activity     
    if(fragmentClass != null){
        try {
            fragment = (Fragment) fragmentClass.newInstance();
        } catch (Exception e) {
            e.printStackTrace();
        }

        // Insert the fragment by replacing any existing fragment
        FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction().replace(R.id.flcontent, fragment).addToBackStack("back tag").commit();

        // Highlight the selected item has been done by NavigationView
    }
    menuItem.setChecked(true);
    // Set action bar title
    setTitle(menuItem.getTitle());
    // Close the navigation drawer
    drawerLayout.closeDrawers();
    }

}
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