Android - метод ActionBarToggle не разрешен Android Studio

Question

Я пытаюсь реализовать панель навигации материала. Я следовал за его учебником. Но я столкнулся с небольшой проблемой. Android Studio разрешает все, кроме параметров drawer_open и drawer_close для конструктора ActionBarDrawerToggle, например.

mDrawerToggle = new ActionBarDrawerToggle(this,Drawer,R.string.drawer_open,R.string.drawer_close) 

Здесь не удается разрешить drawer_open и drawer_close. Образец навигационного ящика Google работает отлично. Я импортировал все необходимые пакеты. Я не могу понять, что происходит не так, потому что я только начал изучать андроид. Полный код MainActivitiy является:

package com.startup.demo; 

import android.support.v4.widget.DrawerLayout; 
import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.support.v7.app.ActionBarDrawerToggle; 
import android.support.v7.widget.LinearLayoutManager; 
import android.support.v7.widget.RecyclerView; 
import android.support.v7.widget.Toolbar; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 


public class MainActivity extends ActionBarActivity { 

    //First We Declare Titles And Icons For Our Navigation Drawer List View 
    //This Icons And Titles Are holded in an Array as you can see 

    String TITLES[] = {"Home","Events","Mail","Shop","Travel"}; 
    //int ICONS[] = {R.drawable.ic_home,R.drawable.ic_events,R.drawable.ic_mail,R.drawable.ic_shop,R.drawable.ic_travel}; 

    //Similarly we Create a String Resource for the name and email in the header view 
    //And we also create a int resource for profile picture in the header view 

    String NAME = "Akash Bangad"; 
    String EMAIL = "akash.bangad@android4devs.com"; 
    //int PROFILE = R.drawable.aka; 

    private Toolbar toolbar;        // Declaring the Toolbar Object 

    RecyclerView mRecyclerView;       // Declaring RecyclerView 
    RecyclerView.Adapter mAdapter;      // Declaring Adapter For Recycler View 
    RecyclerView.LayoutManager mLayoutManager;   // Declaring Layout Manager as a linear layout manager 
    DrawerLayout Drawer;         // Declaring DrawerLayout 

    ActionBarDrawerToggle mDrawerToggle;     // Declaring Action Bar Drawer Toggle 




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

    /* Assinging the toolbar object ot the view 
    and setting the the Action bar to our toolbar 
    */ 
     toolbar = (Toolbar) findViewById(R.id.tool_bar); 
     setSupportActionBar(toolbar); 




     mRecyclerView = (RecyclerView) findViewById(R.id.RecyclerView); // Assigning the RecyclerView Object to the xml View 

     mRecyclerView.setHasFixedSize(true);       // Letting the system know that the list objects are of fixed size 

     mAdapter = new MyAdapter(TITLES,NAME,EMAIL);  // Creating the Adapter of MyAdapter class(which we are going to see in a bit) 
     // And passing the titles,icons,header view name, header view email, 
     // and header view profile picture 

     mRecyclerView.setAdapter(mAdapter);        // Setting the adapter to RecyclerView 

     mLayoutManager = new LinearLayoutManager(this);     // Creating a layout Manager 

     mRecyclerView.setLayoutManager(mLayoutManager);     // Setting the layout Manager 


     Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);  // Drawer object Assigned to the view 
     mDrawerToggle = new ActionBarDrawerToggle(this,Drawer,R.string.drawer_open,R.string.drawer_close){ 

      @Override 
      public void onDrawerOpened(View drawerView) { 
       super.onDrawerOpened(drawerView); 
       // code here will execute once the drawer is opened(As I dont want anything happened whe drawer is 
       // open I am not going to put anything here) 
      } 

      @Override 
      public void onDrawerClosed(View drawerView) { 
       super.onDrawerClosed(drawerView); 
       // Code here will execute once drawer is closed 
      } 



     }; // Drawer Toggle Object Made 
     Drawer.setDrawerListener(mDrawerToggle); // Drawer Listener set to the Drawer toggle 
     mDrawerToggle.syncState();    // Finally we set the drawer toggle sync State 

    } 


    @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); 
    } 
} 

Answer 1

Поместите следующую строку в strings.xml

drawer_open = "ххх" drawer_close = "ххх"