Android 设计支持库二级抽屉菜单

Question

我已经切换到官方的 Google 设计支持库。现在，我想使用带有这样分隔线的二级菜单:

但由于 Android 正在使用 Menu Inflater，我现在不知道该怎么做。我可以添加第二组，但项目具有相同的大小并且没有分隔线。

抽屉.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/overview"
            android:checked="true"
            android:icon="@drawable/ic_action_dashboard"
            android:title="@string/drawer_overview" />

        <item
            android:id="@+id/social_evening"
            android:checked="false"
            android:icon="@drawable/ic_action_brightness_3"
            android:title="@string/drawer_social_evening" />

        <item
            android:id="@+id/scouting_games"
            android:checked="false"
            android:icon="@drawable/ic_action_landscape"
            android:title="@string/drawer_scouting_games" />

        <item
            android:id="@+id/olympics"
            android:checked="false"
            android:icon="@drawable/ic_action_stars"
            android:title="@string/drawer_olympics" />


        <item
            android:id="@+id/quizzes"
            android:checked="false"
            android:icon="@drawable/ic_action_school"
            android:title="@string/drawer_quizzes" />

    </group>
</menu>

MainActivity.java:

package net.sutomaji.freizeitspiele;

import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

/**
 * Created by Tom Schneider on 18.06.15
 */

public class MainActivity extends AppCompatActivity {

    //Defining Variables
    private Toolbar toolbar;
    private NavigationView navigationView;
    private DrawerLayout drawerLayout;

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

        // Initializing Toolbar and setting it as the actionbar
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        //Initializing NavigationView
        navigationView = (NavigationView) findViewById(R.id.navigation_view);

        //Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

            // This method will trigger on item Click of navigation menu
            @Override
            public boolean onNavigationItemSelected(MenuItem menuItem) {


                //Checking if the item is in checked state or not, if not make it in checked state
                if(menuItem.isChecked()) menuItem.setChecked(false);
                else menuItem.setChecked(true);Q

                //Closing drawer on item click
                drawerLayout.closeDrawers();

                //Check to see which item was being clicked and perform appropriate action
                switch (menuItem.getItemId()){


                    //Replacing the main content with ContentFragment Which is our Inbox View;
                    case R.id.overview:
                        Toast.makeText(getApplicationContext(), "Overview Selected", Toast.LENGTH_SHORT).show();
                        ContentFragment fragment = new ContentFragment();
                        FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
                        fragmentTransaction.replace(R.id.frame,fragment);
                        fragmentTransaction.commit();
                        return true;

                    // For rest of the options we just show a toast on click

                    case R.id.social_evening:
                        Toast.makeText(getApplicationContext(),"SE Selected",Toast.LENGTH_SHORT).show();
                        return true;
                    case R.id.scouting_games:
                        Toast.makeText(getApplicationContext(),"SG Selected",Toast.LENGTH_SHORT).show();
                        return true;
                    case R.id.olympics:
                        Toast.makeText(getApplicationContext(),"OL Selected",Toast.LENGTH_SHORT).show();
                        return true;
                    case R.id.quizzes:
                        Toast.makeText(getApplicationContext(),"QZ Selected",Toast.LENGTH_SHORT).show();
                        return true;
                    default:
                        Toast.makeText(getApplicationContext(),"Somethings Wrong",Toast.LENGTH_SHORT).show();
                        return true;

                }
            }
        });

        // Initializing Drawer Layout and ActionBarToggle
        drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
        ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.openDrawer, R.string.closeDrawer){

            @Override
            public void onDrawerClosed(View drawerView) {
                // Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
                super.onDrawerClosed(drawerView);
            }

            @Override
            public void onDrawerOpened(View drawerView) {
                // Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank

                super.onDrawerOpened(drawerView);
            }
        };

        //Setting the actionbarToggle to drawer layout
        drawerLayout.setDrawerListener(actionBarDrawerToggle);

        //calling sync state is necessay or else your hamburger icon wont show up
        actionBarDrawerToggle.syncState();






    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

那么，我怎样才能创建这样的菜单，或者我怎样才能将分隔符(带有类别标题)添加到我的抽屉导航中？

Answer 1

您可以使用标准的 NavigationView 定义这样的菜单:

<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:id="@+id/group1" android:checkableBehavior="single" id>
       //items of group1
    </group>

    <group android:id="@+id/group2" android:checkableBehavior="single" id>
       //items of group2
    </group>

为每个组分配一个唯一的 ID 很重要。