隐藏导航抽屉菜单项 - Android
Posted
技术标签:
【中文标题】隐藏导航抽屉菜单项 - Android【英文标题】：Hide a Navigation Drawer Menu Item - Android 【发布时间】：2015-11-04 11:01:12 【问题描述】：我有一个导航抽屉。调用事件时，我想为用户隐藏我的导航菜单项之一。我该怎么做？
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");
我想在索引 2 处隐藏我的抽屉式导航菜单项。该怎么做？
更新 我的导航抽屉中有 5 个菜单项，我想在调用某个事件时隐藏其中一个。
【问题讨论】：
你的意思是删除DrawerLayout列表视图中的第二项？ 不，只是隐藏它。因为我想稍后再显示它 【参考方案1】：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);
【讨论】：
代码有效。但是如何让它“消失”而不是“不可见” @Kakumanusivakrishna：看看 Desmond Yao 的回答。它实际上是从列表中删除它而不是让它“消失”。但这是唯一的途径 @Kakumanusivakrishna .setVisible(false) 将仅保留项目【参考方案2】：这将作为 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);
【讨论】：
能否请您添加有关这段代码如何提供帮助的更多信息。 当您需要在运行时隐藏特定的导航菜单项时，此代码可为您提供帮助。示例： 当用户登录时。它在导航抽屉中显示配置文件菜单，否则不会。使用此代码，您可以在导航抽屉中隐藏和显示菜单项。【参考方案3】：Kotlin 版本
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)
【讨论】：
【参考方案4】：您可以通过以下代码删除listview的第二项：
navDrawerItems.remove(2);
((BaseAdapter)adapter).notifyDataSetChanged();
【讨论】：
这是第三项【参考方案5】：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);
【讨论】：
【参考方案6】：隐藏/显示导航项
在您的 NavDrawerListAdapter 中进行如下更改，
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;
在activity中调用这个方法如下，
adapter.hideView(2);
//adapter.showView(2);
【讨论】：
【参考方案7】： //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;
【讨论】：
【参考方案8】：NavigationView 导航视图；
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);
【讨论】：
以上是关于隐藏导航抽屉菜单项 - Android的主要内容，如果未能解决你的问题，请参考以下文章