android에서 선택한 컨텍스트 항목에서 위치를 얻는 방법은 무엇입니까?

Question

setListAdapter(new ArrayAdapter<String>(this,R.layout.custom_list_item, r)); 

protected void onListItemClick(ListView list, View view, int position, long id) { 
       super.onListItemClick(list, view, position, id); 

        fname=r.get(position); 

내가 배열 어댑터

등으로부터도 위치와 이름을 가지고 위의 코드는, 내가받을 필요가 이러한 모든 상황에 맞는 메뉴의 값이 어떻게 그것을

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 
     super.onCreateContextMenu(menu, v, menuInfo); 
     menu.setHeaderTitle("Playlist Option"); 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.context_menu, menu);  

    } 

public boolean onContextItemSelected(MenuItem item) { 

// here I select the particular list value, that the value position I need that is only I delete that position from server. what are the data i fetch here? and its possible to get position from array list? 
}   

Answer 1

당신은 AdapterContextMenuInfo을 사용할 수 있습니다 얻을 수 있습니다

public boolean onContextItemSelected(MenuItem item) { 
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); 

    switch (item.getItemId()) { 
     case R.id.delete: 
      String itemName = r.get[(int) info.id]; // This item you will delete 
                // from list 
      return true; 


     } 
    } 

Answer 2

public class DataDemo extends Activity { 

    public ArrayList<HashMap<String, String>> ContactList = new ArrayList<HashMap<String, String>>(); 

    private static final String TAG_ID = "id"; 
    private static final String TAG_NAME = "name"; 
    private static final String TAG_PHNO = "phNo"; 

    private static int itemIndex; 
    private ListView lst; 
    private List<Contact> contacts; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_database_demo); 
     lst = (ListView) findViewById(R.id.lstContact); 
    } 

    @Override 
    public void onCreateContextMenu(ContextMenu menu, View v, 
      ContextMenuInfo menuInfo) { 
     // TODO Auto-generated method stub 
     super.onCreateContextMenu(menu, v, menuInfo); 
     if (v.getId() == R.id.lstContact) { 
      menu.setHeaderIcon(R.drawable.message); 
      menu.setHeaderTitle("Contacts"); 
      menu.add(0, 1, Menu.NONE, "Edit Contact"); 
      menu.add(0, 2, Menu.NONE, "Delete Contact"); 
      menu.add(0, 3, Menu.NONE, "Cancel"); 
     } 

    } 
    @Override 
    public boolean onContextItemSelected(MenuItem item) { 
     // TODO Auto-generated method stub 
     AdapterView.AdapterContextMenuInfo menuInfo;//you can select on context item selected 
     menuInfo = (AdapterContextMenuInfo) item.getMenuInfo(); 
     itemIndex = menuInfo.position;//you will get position of selected item 
     final Contact con = contacts.get(itemIndex); 

     switch (item.getItemId()) { 
     case 1: 

      Intent editIntent = new Intent(DataDemo.this, UpdateContact.class); 
      editIntent.putExtra(TAG_ID, con.getID()); 
      editIntent.putExtra(TAG_NAME, con.getName()); 
      editIntent.putExtra(TAG_PHNO, con.getPhNo()); 
      startActivity(editIntent); 
      break; 
     case 2: 
      new AlertDialog.Builder(this) 
        .setIcon(R.drawable.document_delete) 
        .setTitle("Confirm Delete") 
        .setMessage("Are you sure?") 
        .setPositiveButton("Yes", 
          new DialogInterface.OnClickListener() { 

           public void onClick(DialogInterface dialog, 
             int which) { 
            // TODO Auto-generated method stub 
            DatabaseHandler db = new DatabaseHandler(
              DataDemo.this); 
            db.DeleteContact(con); 
            Toast.makeText(DataDemo.this, con.getName() + " Deleted", 
              Toast.LENGTH_SHORT).show(); 
            fillList(); 
           } 
          }).setNegativeButton("No", null).show(); 

      break; 
     default: 
      break; 
     } 
     return super.onContextItemSelected(item); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuItem addNew = menu.add(0, 1, 0, "Create Contact"); 

     addNew.setOnMenuItemClickListener(new OnMenuItemClickListener() { 

      public boolean onMenuItemClick(MenuItem item) { 
       // TODO Auto-generated method stub 
       Intent iCreate = new Intent(DataDemo.this, CreateContact.class); 
       startActivity(iCreate); 
       return true; 
      } 
     }); 
     return true; 
    } 

    protected void fillList() { 
     DatabaseHandler db = new DatabaseHandler(this); 
     ListAdapter adap; 
     ContactList.clear(); 
     contacts = db.ReadAllContact(); 

     for (Contact cn : contacts) { 
      HashMap<String, String> hmap = new HashMap<String, String>(); 
      hmap.put(TAG_NAME, cn.getName()); 
      hmap.put(TAG_PHNO, cn.getPhNo()); 
      ContactList.add(hmap); 
      adap = new SimpleAdapter(this, ContactList, 
        R.layout.list_item_view, 
        new String[] { TAG_NAME, TAG_PHNO }, new int[] { 
          R.id.lstName, R.id.lstPhNo }); 


      lst.setAdapter(adap); 
      registerForContextMenu(lst); 
     } 
    } 


    @Override 
    protected void onResume() { 
     // TODO Auto-generated method stub 
     super.onResume(); 
     fillList(); 
    } 

}