如何在列表視圖中按字母順序顯示聯繫人

Question

我有一個自定義列表視圖，我需要按字母順序顯示聯繫人可以提供示例代碼我如何實現這一目標？

Answer 1

你可以在alphabatical爲了接觸這樣的：

Cursor cursor = getContentResolver.query(Phone.CONTENT_URI, null, null, null, Phone.DISPLAY_NAME + " ASC"); 

參考以下鏈接獲取更多cearity：

How to call Android contacts list?

How to get contacts from native phonebook in android

How to obtain all details of a contact in Android

How to get the first name and last name from Android contacts?

How to import contacts from phonebook to our application

Android contacts extraction

How to get all android contacts but without those which are on SIM

對於列表，你可以參考這個教程：

http://www.vogella.de/articles/AndroidListView/article.html

Answer 2

利用這個代碼來檢索聯繫人

ArrayList<HashMap<String,String>> contactData=new ArrayList<HashMap<String,String>>(); 
ContentResolver cr = getContentResolver(); 
    Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null); 
    while (cursor.moveToNext()) { 
     try{ 
     String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID)); 
     String name=cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); 
     String hasPhone = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)); 
     if (Integer.parseInt(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) { 
      Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId, null, null); 
      while (phones.moveToNext()) { 
       String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); 
       HashMap<String,String> map=new HashMap<String,String>(); 
       map.put("name", name); 
       map.put("number", phoneNumber); 
       contactData.add(map); 
      } 
      phones.close(); 
     } 
    }catch(Exception e){} 
    } 

現在的聯繫人詳細信息存儲在contactData ArrayList。現在排序此ArrayList像波紋管

Collections.sort(contactData, new Comparator(){ 
       @Override 
       public int compare(Object o1, Object o2) { 
        HashMap map1=(HashMap)o1; 
        HashMap map2=(HashMap)o2; 
        String s1=(String)map1.get("name"); 
        String s2=(String)map2.get("name"); 
        return s1.compareTo(s2); 
       } 
      }); 

現在聯繫人詳細信息存儲在聯絡資料 ArrayList中的排列順序。

Answer 3

我已經加入字母頭到聯繫人列表

new ReadContactTask(context, showProgressDialog,new OnContactReadListener() { 
      @Override 
      public void onContactRead(List<ContactItem> dummyList) { 

       ArrayList<ContactItem> latestPhoneContacts = new ArrayList<>(); 

       if(dummyList!=null && dummyList.size()>0) 
       { 
        tvNoResult.setVisibility(View.GONE); 

        for(ContactItem contactItem : dummyList){ 
         String contactNameInCapital = ""; 
         if(contactItem.getContactName()!=null && contactItem.getContactName().length()>2){ 
          contactNameInCapital = contactItem.getContactName().substring(0,1).toUpperCase(); 

          if(contactNameInCapital.charAt(0) != previousContact.charAt(0)) 
          { 
           latestPhoneContacts.add(new ContactItem(contactNameInCapital.substring(0,1))); 
           latestPhoneContacts.add(contactItem); 
          } 
          else 
          { 
           latestPhoneContacts.add(contactItem); 
          } 

          previousContact = contactNameInCapital; 
         } 
        } 
        if(latestPhoneContacts!=null && latestPhoneContacts.size()>0) 
         contactListAdapter.addItems(latestPhoneContacts); 
       } 
      } 

      @Override 
      public void onContactEmpty() { 

      } 
     }).execute(); 

其中

private String previousContact ="Zee"; 

Answer 4

你需要這樣做：

Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");