Android更改导航抽屉菜单项文本的程序化方法

Question

我在我的应用中使用了新的导航抽屉，并希望能够从代码中动态地更改导航视图菜单项的标题文本。我已经查看了许多帖子，但是我无法弄清楚怎样做。请问如何正确实现这个功能？

MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                .setAction("Action", null).show();
    }
});

DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
        this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();

NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);

}

activity_main_drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

<group android:checkableBehavior="single">
    <item android:id="@+id/nav_camara" android:icon="@android:drawable/ic_menu_camera"
        android:title="Import" />
    <item android:id="@+id/nav_gallery" android:icon="@android:drawable/ic_menu_gallery"
        android:title="Gallery" />
    <item android:id="@+id/nav_slideshow" android:icon="@android:drawable/ic_menu_slideshow"
        android:title="Slideshow" />
    <item android:id="@+id/nav_manage" android:icon="@android:drawable/ic_menu_manage"
        android:title="Tools" />
</group>

<item android:title="Communicate">
    <menu>
        <item android:id="@+id/nav_share" android:icon="@android:drawable/ic_menu_share"
            android:title="Share" />
        <item android:id="@+id/nav_send" android:icon="@android:drawable/ic_menu_send"
            android:title="Send" />
    </menu>
</item>

- user3065901

---

你可以动态更改菜单的唯一方法是清除它并加载另一个菜单：https://dev59.com/gl0Z5IYBdhLWcg3wrByH - kris larson

Answer 1

您可以通过在 MainActivity.java 文件中添加以下代码来以编程方式更改导航菜单项的标题。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ...
    //other stuff here
    ...
    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);

    // get menu from navigationView
    Menu menu = navigationView.getMenu();

    // find MenuItem you want to change
    MenuItem nav_camara = menu.findItem(R.id.nav_camara);

    // set new title to the MenuItem
    nav_camara.setTitle("NewTitleForCamera");

    // do the same for other MenuItems
    MenuItem nav_gallery = menu.findItem(R.id.nav_gallery);
    nav_gallery.setTitle("NewTitleForGallery");

    // add NavigationItemSelectedListener to check the navigation clicks
    navigationView.setNavigationItemSelectedListener(this);

}

这对我来说很有效。希望它也能帮到你。

- ELITE

Answer 2

如果您重命名或删除导航菜单抽屉列表中的项目，请按以下方式更改代码

  NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    if (navigationView != null) {
        Menu menu = navigationView.getMenu();
        menu.findItem(R.id.nav_profile).setTitle("My Account");
        menu.findItem(R.id.nav_mng_task).setTitle("Control Task");
        //menu.findItem(R.id.nav_pkg_manage).setVisible(false);//In case you want to remove menu item
        navigationView.setNavigationItemSelectedListener(this);
    }

- Ness Tyagi

Answer 3

如果您的导航抽屉菜单中有一个布局作为项目，您想以编程方式更改它，那么这段代码片段将对您有所帮助：

MenuItem nav = navigationView.getMenu().findItem(R.id.nav_close_app);
nav.setActionView(R.layout.item_navigationdrawer_close_app);

- Neuron

Answer 4

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


    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    Menu menu = navigationView.getMenu();
    MenuItem nav_login = menu.findItem(R.id.nav_logout);
nav_login.setTitle("Login");


}

这是正确的！希望一切运行良好......

- Avnish Titoriya

Answer 5

这段代码可以用于动态添加菜单。我使用它时有效了...代码的主要部分是displayItems();......将项目的字符串数组作为参数传递给函数...它就能工作。

public class Courses extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {

    TextView nn,ne,np,nl;
    SharedPreferences sp;
    NavigationView navigationView;
    DrawerLayout drawer;
    ImageView img;
    NavigationView nv;
    int id;

String[] acc={"ACPFAT","CPFA","Tally.ERP 9 Simplified","D P F A","CA Articles","DAA","TFAP","Tally.ERP 9 - Specialization","GST (Goods and service Tax)"};

drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.setDrawerTitle(Gravity.CENTER,n);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, 
                 R.string.navigation_drawer_open,R.string.navigation_drawer_close);

drawer.addDrawerListener(toggle);
toggle.syncState();
navigationView.setNavigationItemSelectedListener(this);

Intent i=getIntent();
id=i.getIntExtra("button",0);

switch(id)
    {

        case R.id.account:
            img.setImageResource(R.drawable.acc);
            displayItems(acc);
            break;

        case R.id.modular:
            img.setImageResource(R.drawable.acc);
            displayItems(mod);
            break;

        case R.id.diploma:

            img.setImageResource(R.drawable.acc);
            displayItems(dc);
            break;

    }

public void displayItems(String[] a)
  {

    final NavigationView navigationView=findViewById(R.id.nav_view);
    final DrawerLayout drawer=findViewById(R.id.drawer_layout);
    Menu menu=navigationView.getMenu();
    SubMenu sb=menu.addSubMenu("Courses");

    int i=0;
    while(i<a.length)
    {
        sb.add(a[i]);
        i++;
    }
 }

- Skanda Shreyas

Answer 6

对于Kotlin：

val bottomNavigationView = findViewById<BottomNavigationView(R.id.bottom_nav)
        
val menu: Menu = bottomNavigationView.menu
val secondMenu: MenuItem = menu.findItem(R.id.needsFragment)
        // To set menu title according to user type (ie. Abc / Xyz )
        when(userType){
            1 -> secondMenu.title = "Abc"
            2 -> secondMenu.title = "Xyz"
        }
        bottomNavigationView.setupWithNavController(navController)
        bottomNavigationView.setOnNavigationItemReselectedListener { }

- Amit Sharma