web-dev-qa-db-fra.com

Masquer un élément du menu du tiroir de navigation - Android

J'ai un tiroir de navigation. Lorsqu'un événement est appelé, je souhaite masquer l'un de mes éléments de menu de navigation pour l'utilisateur. Comment puis je faire ça?

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.sliding_menu);

    if (Android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    mTitle = mDrawerTitle = getTitle();

    // load slide menu items
    navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

    // nav drawer icons from resources
    navMenuIcons = getResources()
            .obtainTypedArray(R.array.nav_drawer_icons);

    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout1);
    mDrawerList = (ListView) findViewById(R.id.list_slidermenu1);

    navDrawerItems = new ArrayList<NavDrawerItem>();

    // adding nav drawer items to array
    // Home
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
    // Profil
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
    // Prospek
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
    // Announcement
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true,
            cariTotal("http://192.168.0.23/api/Android/announcement/").toString()));
    // Logout
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));

    // Recycle the typed array
    navMenuIcons.recycle();
    //set event
    mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
    // setting the nav drawer list adapter
    adapter = new NavDrawerListAdapter(getApplicationContext(),
            navDrawerItems);
    mDrawerList.setAdapter(adapter);
    // enabling action bar app icon and behaving it as toggle button
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);

    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            R.string.app_name,
            R.string.app_name
    ){
        public void onDrawerClosed(View view) {
            getSupportActionBar().setTitle(mTitle);
            // calling onPrepareOptionsMenu() to show action bar icons
            invalidateOptionsMenu();
        }

        public void onDrawerOpened(View drawerView) {
            getSupportActionBar().setTitle(mDrawerTitle);
            //mDrawerList.bringToFront();
            //mDrawerLayout.requestLayout();
            // calling onPrepareOptionsMenu() to hide action bar icons
            invalidateOptionsMenu();
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);

    if (savedInstanceState == null) {
        // on first time display view for first nav item
        displayView(0);
    }
}
private void displayView(int position) {
    // update the main content by replacing fragments
    Android.app.Fragment fragment = null;
    switch (position) {
        case 0:
            fragment = new HomeFragment();
            break;
        case 1:
            fragment = new ProfilFragment();
            break;
        case 2:
            fragment = new ProspekFragment();
            break;
        case 3:
            fragment = new AnnouncementFragment();
            break;
        case 4:
            Logout();
            break;
        default:
            break;
    }

    if (fragment != null) {
        Android.app.FragmentManager fragmentManager = getFragmentManager();
        fragmentManager.beginTransaction()
                .replace(R.id.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("SlidingMenu", "Error in creating fragment");
    }
}

Je veux masquer mon élément de menu du tiroir de navigation à l'index 2. Comment faire cela?

UPDATE Il y a 5 éléments de menu dans le tiroir de navigation, je souhaite masquer l'un d'eux lorsqu'un événement est appelé.

androidhidenavigation-drawer
43
huzain07
NavigationView navigationView;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    hideItem();
  }


private void hideItem()
   {
     navigationView = (NavigationView) findViewById(R.id.nav_view);
     Menu nav_Menu = navigationView.getMenu();
     nav_Menu.findItem(R.id.nav_settings).setVisible(false);
   }
144
Aj121

Cela fonctionnera comme setInvisibility (GONE):

 Menu nav_Menu = navigationView.getMenu();
 nav_Menu.findItem(R.id.nav_profile).setVisible(false);
 nav_Menu.findItem(R.id.menu_login).setVisible(true);
 nav_Menu.findItem(R.id.menu_logout).setVisible(false);
 nav_Menu.findItem(R.id.menu_regsitration).setVisible(true);
16
Pravin Dharam

Vous pouvez supprimer le deuxième élément de listview via le code suivant:

navDrawerItems.remove(2);
((BaseAdapter)adapter).notifyDataSetChanged();
3
Desmond Yao
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

Menu menu =navigationView.getMenu();

MenuItem target = menu.findItem(R.id.nav_target);

target.setVisible(false);
1
Kishore Reddy

Masquer/Afficher élément de navigation  

Apportez des modifications dans votre NavDrawerListAdapter comme suit,

public class MyListAdapter extends BaseAdapter {

    Context context;
    ArrayList<ItemListModel> listMenuItem;
    ArrayList<ItemListModel> listMenuItem1;
    int hideViewIndex = -1;

    public MyListAdapter(Context context, ArrayList<ItemListModel> listMenuItem) {
        this.context = context;
        this.listMenuItem = listMenuItem;
        listMenuItem1=new ArrayList<ItemListModel>(listMenuItem);
    }

    @Override
    public int getCount() {
        return listMenuItem.size();
    }

    @Override
    public Object getItem(int position) {
        return listMenuItem.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    private class ViewHolder
    {
        private ImageView imgLogo;
        private TextView txtItemName;
    }

    public void hideView(int pos)
    {
        listMenuItem.remove(pos);
        notifyDataSetChanged();
    }

    public void showView(int pos)
    {
        listMenuItem.add(pos, listMenuItem1.get(pos));
        notifyDataSetChanged();
    }

    @SuppressLint("InflateParams")
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder viewHolder = null;
        if(convertView == null)
        {
            LayoutInflater myLayoutInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
            convertView = myLayoutInflater.inflate(R.layout.activity_item_list, null);
            viewHolder = new ViewHolder();
            viewHolder.imgLogo = (ImageView) convertView.findViewById(R.id.imgLogo);
            viewHolder.txtItemName = (TextView) convertView.findViewById(R.id.txtItemName);
            convertView.setTag(viewHolder);
        }
        else
        {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        ItemListModel itemListModel = listMenuItem.get(position);
        viewHolder.imgLogo.setImageDrawable(itemListModel.getImageLogo());
        viewHolder.txtItemName.setText(itemListModel.getStrItemName());

        return convertView;
    }

et appelez cette méthode en activité comme suit,

adapter.hideView(2);
//adapter.showView(2);
0
Piyush Malaviya
    //hide logout menu item when the user is not loggrd in
    //Checking the condition whether the user is logged in or not

    if (!SharedPrefManager.getmInstance(this).isLoggedIn()){
        Menu nav_Menu = navigationView.getMenu();
    nav_Menu.findItem(R.id.nav_logout).setVisible(false);
    }


 //SharedPrefManager .Java class where we define the isLoggedIn Method()

import Android.content.Context;
import Android.content.SharedPreferences;

import com.motortrade.motortrade.t_Model.User;

public class SharedPrefManager {

private static final String SHARED_PREF_NAME = "my_shared_pref";

private  static SharedPrefManager mInstance;
private Context mCtx;

private SharedPrefManager(Context mCtx){
    this.mCtx = mCtx;
}

public static synchronized SharedPrefManager getmInstance(Context mCtx){
    if (mInstance == null){
        mInstance = new SharedPrefManager(mCtx);
    }
    return mInstance;
}

public boolean isLoggedIn(){
    SharedPreferences preferences = mCtx.getSharedPreferences(SHARED_PREF_NAME, Context.MODE_PRIVATE);

   return preferences.getInt("user_id", -1) != -1;
}
0
Tousif Akram

Version Kotlin

 val navigationView: NavigationView = findViewById(R.id.nav_view) as NavigationView
 val nav_Menu: Menu = navigationView.getMenu()
 nav_Menu.findItem(R.id.nav_stock).setVisible(false)
0
Rafael Guimarães

NavigationView navigationView;

    mapIntentActivity = getIntent();
    navItemString = mapIntentActivity.getStringExtra("success");

    if(navItemString != null) {

        navigationView = (NavigationView) findViewById(R.id.nav_view);
        Menu nav_Menu = navigationView.getMenu();
        nav_Menu.findItem(R.id.nav_car).setVisible(false);

    }
0
Alishan