Wie Symbole, um Elemente in Listview in Android Navigationsleiste

Question

Iam Anfänger in Android Entwicklung hinzuzufügen, so folgte ich Tutorial von http://www.androidhive.info/2015/04/android-getting-started-with-material-design/, ich möchte die Symbole hinzufügen in android Navigation drawerm zur Listenansicht, hilf mir plz dieses

bei der Festsetzung

hier ist meine nav_drawer_row.xml Quelle:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:clickable="true"> 

    <TextView 
     android:id="@+id/title" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:paddingLeft="30dp" 
     android:paddingTop="10dp" 
     android:paddingBottom="10dp" 
     android:textSize="15dp" 
     android:textStyle="bold" /> 

</RelativeLayout> 

hier ist meine NavigationDrawerAdapter.java Quelle:

import android.content.Context; 
import android.support.v7.widget.RecyclerView; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.TextView; 

import java.util.Collections; 
import java.util.List; 

/** 
* Created by Ravi Tamada on 12-03-2015. 
*/ 
public class NavigationDrawerAdapter extends RecyclerView.Adapter<NavigationDrawerAdapter.MyViewHolder> { 
    List<NavDrawerItem> data = Collections.emptyList(); 
    private LayoutInflater inflater; 
    private Context context; 

    public NavigationDrawerAdapter(Context context, List<NavDrawerItem> data) { 
     this.context = context; 
     inflater = LayoutInflater.from(context); 
     this.data = data; 
    } 

    public void delete(int position) { 
     data.remove(position); 
     notifyItemRemoved(position); 
    } 

    @Override 
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     View view = inflater.inflate(R.layout.nav_drawer_row, parent, false); 
     MyViewHolder holder = new MyViewHolder(view); 
     return holder; 
    } 

    @Override 
    public void onBindViewHolder(MyViewHolder holder, int position) { 
     NavDrawerItem current = data.get(position); 
     holder.title.setText(current.getTitle()); 
    } 

    @Override 
    public int getItemCount() { 
     return data.size(); 
    } 

    class MyViewHolder extends RecyclerView.ViewHolder { 
     TextView title; 

     public MyViewHolder(View itemView) { 
      super(itemView); 
      title = (TextView) itemView.findViewById(R.id.title); 
     } 
    } 
} 

hier FragmentD rawer.java Quelle:

import android.content.Context; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.support.v4.widget.DrawerLayout; 
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.GestureDetector; 
import android.view.LayoutInflater; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.ViewGroup; 

import java.util.ArrayList; 
import java.util.List; 

import info.androidhive.materialdesign.R; 
import info.androidhive.materialdesign.adapter.NavigationDrawerAdapter; 
import info.androidhive.materialdesign.model.NavDrawerItem; 

public class FragmentDrawer extends Fragment { 

    private static String TAG = FragmentDrawer.class.getSimpleName(); 

    private RecyclerView recyclerView; 
    private ActionBarDrawerToggle mDrawerToggle; 
    private DrawerLayout mDrawerLayout; 
    private NavigationDrawerAdapter adapter; 
    private View containerView; 
    private static String[] titles = null; 
    private FragmentDrawerListener drawerListener; 

    public FragmentDrawer() { 

    } 

    public void setDrawerListener(FragmentDrawerListener listener) { 
     this.drawerListener = listener; 
    } 

    public static List<NavDrawerItem> getData() { 
     List<NavDrawerItem> data = new ArrayList<>(); 


     // preparing navigation drawer items 
     for (int i = 0; i < titles.length; i++) { 
      NavDrawerItem navItem = new NavDrawerItem(); 
      navItem.setTitle(titles[i]); 
      data.add(navItem); 
     } 
     return data; 
    } 

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

     // drawer labels 
     titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels); 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     // Inflating view layout 
     View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false); 
     recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList); 

     adapter = new NavigationDrawerAdapter(getActivity(), getData()); 
     recyclerView.setAdapter(adapter); 
     recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 
     recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() { 
      @Override 
      public void onClick(View view, int position) { 
       drawerListener.onDrawerItemSelected(view, position); 
       mDrawerLayout.closeDrawer(containerView); 
      } 

      @Override 
      public void onLongClick(View view, int position) { 

      } 
     })); 

     return layout; 
    } 


    public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) { 
     containerView = getActivity().findViewById(fragmentId); 
     mDrawerLayout = drawerLayout; 
     mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) { 
      @Override 
      public void onDrawerOpened(View drawerView) { 
       super.onDrawerOpened(drawerView); 
       getActivity().invalidateOptionsMenu(); 
      } 

      @Override 
      public void onDrawerClosed(View drawerView) { 
       super.onDrawerClosed(drawerView); 
       getActivity().invalidateOptionsMenu(); 
      } 

      @Override 
      public void onDrawerSlide(View drawerView, float slideOffset) { 
       super.onDrawerSlide(drawerView, slideOffset); 
       toolbar.setAlpha(1 - slideOffset/2); 
      } 
     }; 

     mDrawerLayout.setDrawerListener(mDrawerToggle); 
     mDrawerLayout.post(new Runnable() { 
      @Override 
      public void run() { 
       mDrawerToggle.syncState(); 
      } 
     }); 

    } 

    public static interface ClickListener { 
     public void onClick(View view, int position); 

     public void onLongClick(View view, int position); 
    } 

    static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener { 

     private GestureDetector gestureDetector; 
     private ClickListener clickListener; 

     public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) { 
      this.clickListener = clickListener; 
      gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { 
       @Override 
       public boolean onSingleTapUp(MotionEvent e) { 
        return true; 
       } 

       @Override 
       public void onLongPress(MotionEvent e) { 
        View child = recyclerView.findChildViewUnder(e.getX(), e.getY()); 
        if (child != null && clickListener != null) { 
         clickListener.onLongClick(child, recyclerView.getChildPosition(child)); 
        } 
       } 
      }); 
     } 

     @Override 
     public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { 

      View child = rv.findChildViewUnder(e.getX(), e.getY()); 
      if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) { 
       clickListener.onClick(child, rv.getChildPosition(child)); 
      } 
      return false; 
     } 

     @Override 
     public void onTouchEvent(RecyclerView rv, MotionEvent e) { 
     } 

     @Override 
     public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { 

     } 


    } 

    public interface FragmentDrawerListener { 
     public void onDrawerItemSelected(View view, int position); 
    } 
} 

Answer 1

Sie müssen ein benutzerdefiniertes Layout für Ihre Navigationsschublade erstellen. Dann können Sie Bilder und sogar erweiterbare Listen hinzufügen. Hier ist ein Tutorial für Sie.

http://www.tutecentral.com/android-custom-navigation-drawer

Answer 2

Sie können drawableLeft Eigenschaft in XML gesetzt.

Oder Sie können programmatisch einstellen.

Sie können jede der folgenden Methoden für die Drawable auf Textview Einstellung:

setCompoundDrawablesWithIntrinsicBounds 1- (int, int, int, int)

setCompoundDrawables 2- (Left_Drawable, Top_Drawable, Right_Drawable, Bottom_Drawable)

Und Sie können ziehbar von Ressourcen zu erhalten.

GetResources() getDrawable (R.drawable.your_drawable_id);