如何在滑動菜單中添加一組新的項目？

Question

我想在滑動菜單中添加另一個塊，或者其他任何被調用的項目，但我無法弄清楚要更改第一個代碼的內容......在我的滑動菜單中，我有6個項目，但我有4個項目的第一個標題，然後，另一個標題，和另外2個項目..但我無法弄清楚我必須改變我的第一個塊代碼..非常感謝！ ！

這裏是我的MainActivity.java：再次

package com.orar.cngcnasaud; 

import android.app.Activity; 
import android.content.Intent; 
import android.content.res.Configuration; 
import android.graphics.Color; 
import android.media.MediaPlayer; 
import android.os.Bundle; 
import android.support.v4.app.ActionBarDrawerToggle; 
import android.support.v4.view.GravityCompat; 
import android.support.v4.widget.DrawerLayout; 
import android.util.Log; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.AdapterView; 
import android.widget.Button; 
import android.widget.ListView; 

public class MainActivity extends Activity implements OnClickListener { 

    private ListView mDrawerList; 
    private DrawerLayout mDrawer; 
    private CustomActionBarDrawerToggle mDrawerToggle; 
    private String[] menuItems; 


    private static final String TAG = "AudioDemo"; 
    private static final String isPlaying = "Media is Playing"; 
    private static final String notPlaying = "Media has stopped Playing"; 

    MediaPlayer player; 
    Button playerButton; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main_drawer); 
     player = MediaPlayer.create(this, R.raw.gc); 

     player.setLooping(false); // Set looping 

     // Get the button from the view 
     playerButton = (Button) this.findViewById(R.id.buttonmp); 
     playerButton.setText(R.string.play_label); 
     playerButton.setTextColor(Color.WHITE); 
     playerButton.setOnClickListener((OnClickListener) this); 







     // enable ActionBar app icon to behave as action to toggle nav drawer 
     getActionBar().setDisplayHomeAsUpEnabled(true); 
     getActionBar().setHomeButtonEnabled(true); 

     mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout); 

     // set a custom shadow that overlays the main content when the drawer 
     // opens 
     mDrawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); 

     _initMenu(); 
     mDrawerToggle = new CustomActionBarDrawerToggle(this, mDrawer); 
     mDrawer.setDrawerListener(mDrawerToggle); 
    } 

     public void onClick(View v) { 
      Log.d(TAG, "onClick: " + v); 
      if (v.getId() == R.id.buttonmp) { 
       playPause(); 
      } 

    } 




    private void demoPause() { 
     // TODO Auto-generated method stub 
     player.pause(); 
     playerButton.setText(R.string.play_label); 

     Log.d(TAG, notPlaying); 
} 

    private void playPause() { 
     // TODO Auto-generated method stub 
     if(player.isPlaying()) { 
      demoPause(); 
     } else { 
      demoPlay(); 
     } 
    } 

    private void demoPlay() { 
     // TODO Auto-generated method stub 
     player.start(); 
     playerButton.setText(R.string.stop_label); 

     Log.d(TAG, isPlaying); 
} 




    private void _initMenu() { 
     NsMenuAdapter mAdapter = new NsMenuAdapter(this); 

     // Add Header 
     mAdapter.addHeader(R.string.ns_menu_main_header); 

     // Add first block 

     menuItems = getResources().getStringArray(
       R.array.ns_menu_items); 
     String[] menuItemsIcon = getResources().getStringArray(
       R.array.ns_menu_items_icon); 

     int res = 0; 
     for (String item : menuItems) { 

      int id_title = getResources().getIdentifier(item, "string", 
        this.getPackageName()); 
      int id_icon = getResources().getIdentifier(menuItemsIcon[res], 
        "drawable", this.getPackageName()); 

      NsMenuItemModel mItem = new NsMenuItemModel(id_title, id_icon); 
      if (res==1) mItem.counter=0; //it is just an example... 
      if (res==3) mItem.counter=0; //it is just an example... 
      mAdapter.addItem(mItem); 
      res++; 
     } 



     mDrawerList = (ListView) findViewById(R.id.drawer); 
     if (mDrawerList != null) 
      mDrawerList.setAdapter(mAdapter); 

     mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); 

    } 

    @Override 
    protected void onPostCreate(Bundle savedInstanceState) { 
     super.onPostCreate(savedInstanceState); 
     // Sync the toggle state after onRestoreInstanceState has occurred. 
     mDrawerToggle.syncState(); 
    } 

    @Override 
    public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 
     mDrawerToggle.onConfigurationChanged(newConfig); 
    } 




    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     /* 
     * The action bar home/up should open or close the drawer. 
     * ActionBarDrawerToggle will take care of this. 
     */ 
     if (mDrawerToggle.onOptionsItemSelected(item)) { 
      return true; 
     } 

     // Handle your other action bar items... 
     return super.onOptionsItemSelected(item); 
    } 

    private class CustomActionBarDrawerToggle extends ActionBarDrawerToggle { 

     public CustomActionBarDrawerToggle(Activity mActivity,DrawerLayout mDrawerLayout){ 
      super(
       mActivity, 
       mDrawerLayout, 
       R.drawable.ic_drawer, 
       R.string.ns_menu_open, 
       R.string.ns_menu_close); 
     } 

     @Override 
     public void onDrawerClosed(View view) { 
      getActionBar().setTitle(getString(R.string.ns_menu_close)); 
      invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
     } 

     @Override 
     public void onDrawerOpened(View drawerView) { 
      getActionBar().setTitle(getString(R.string.ns_menu_open)); 
      invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
     } 
    } 

    private class DrawerItemClickListener implements ListView.OnItemClickListener { 

     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
      mDrawerList.setItemChecked(position, true);   
      mDrawer.closeDrawer(mDrawerList); 
      if (position == 1) { 
       Intent intent = new Intent(MainActivity.this, Istoric.class); 
       startActivity(intent); 
       mDrawer.closeDrawers(); 
      } 
      else if (position == 2) { 
       Intent intent2 = new Intent(MainActivity.this, Profesori.class); 
       startActivity(intent2); 
       mDrawer.closeDrawers(); 
      } 
      if (position == 3) { 
       Intent intent3 = new Intent(MainActivity.this, Elevi.class); 
       startActivity(intent3); 
       mDrawer.closeDrawers(); 
      } 
      if (position == 4) { 
       Intent intent4 = new Intent(MainActivity.this, ShowImageActivity.class); 
       startActivity(intent4); 
       mDrawer.closeDrawers(); 
      } 

      if (position == 5) { 
       Intent intent5 = new Intent(MainActivity.this, Despre.class); 
       startActivity(intent5); 
       mDrawer.closeDrawers(); 
      } 
      if (position == 6) { 
       Intent intent6 = new Intent(MainActivity.this, Feedback.class); 
       startActivity(intent6); 
       mDrawer.closeDrawers(); 
      } 

     } 



    } 
     } 

謝謝！

Answer 1

我假設你想實現類似的是在下面的圖片的東西：

你將不得不修改列表的適配器（NsMenuAdapter）支持兩種視圖 - 項目和標題，其中產品可點擊和標題只是一種組頭。適配器應該獲取對象的數組/列表，並且每個對象都應該具有類型屬性。這可能會使一些OnItemClickListener複雜化。

我發佈我的那種列表適配器的例子。在我的情況下，我創建了NavigationDrawerItem模型，以保存關於項目類型，項目'可點擊性'的信息以及在點擊項目後應該觸發什麼操作。

public class NavigationDrawerAdapter extends ArrayAdapter<NavigationDrawerItem> { 
private static final String TAG = "NavigationDrawerAdapter"; 

public NavigationDrawerAdapter(Context context, int resource, NavigationDrawerItem[] objects) { 
    super(context, resource, objects); 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    if (null == convertView) { 
     int itemType = getItemViewType(position); 
     if (NavigationDrawerItem.TYPE_TITLE == itemType) { 
      convertView = View.inflate(getContext(), R.layout.item_title_navigation_drawer, null); 
     } else if (NavigationDrawerItem.TYPE_ITEM_UNDER_TITLE == itemType) { 
      convertView = View.inflate(getContext(), R.layout.item_under_title_navigation_drawer, null); 
     } else { 
      Log.e(TAG, "Returning default title view - Invalid drawer item type" + itemType); 
      convertView = View.inflate(getContext(), R.layout.item_title_navigation_drawer, null); 
     } 
    } 
    TextView tv = (TextView) convertView.findViewById(R.id.text); 
    tv.setText(getContext().getString(getItem(position).stringRes)); 
    return convertView; 
} 

@Override 
public int getItemViewType(int position) { 
    return getItem(position).type; 
} 

@Override 
public int getViewTypeCount() { 
    return NavigationDrawerItem.NUMBER_OF_ITEM_TYPES; 
} 

@Override 
public boolean isEnabled(int position) { 
    return NavigationDrawerItem.isItemClickable(getItemViewType(position)); 
} 

} 

而且NavigationDrawerItem類：

public final class NavigationDrawerItem { 
private static final String TAG = "NavigationDrawerItem"; 

// Types must have numbers from 0 to n without gaps. 
public static final int TYPE_TITLE = 0;// nonclickable 
public static final int TYPE_ITEM_UNDER_TITLE = 1;// clickabel 
public static final int NUMBER_OF_ITEM_TYPES = 2; 

public final int action; 
public final String argument; 
public final int type; 

    //Constructors etc. 

public static final boolean isItemClickable(int itemType) { 
    if (TYPE_TITLE == itemType) { 
     return false; 
    } else if (TYPE_ITEM_UNDER_TITLE == itemType) { 
     return true; 
    } else { 
     Log.e(TAG, "Invalid item type " + itemType); 
     return false; 
    } 
} 

}