Android-Abfrage für Kontakte gibt die gleiche Nummer zweimal zurück?

Question

In der Vergangenheit hat der folgende Code alle Kontakte auf einem Telefon erfolgreich erhalten. Unter Android 6.0 werden jetzt alle Kontakte doppelt nacheinander abgerufen. was ich nicht will.

ArrayList<PersonalContact> allContacts = new ArrayList<>(); 

    Cursor personalContacts = getContext().getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, 
    ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME); 

    if (personalContacts != null && personalContacts.moveToFirst()) 
    { 
     do 
     { 
      String name = personalContacts.getString(personalContacts.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)); 
      String number = personalContacts.getString(personalContacts.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); 

      //This if statement is my current hack-y fix to this. 
      if(allContacts.size() < 1 || !allContacts.get(allContacts.size() - 1).getRawPhoneNumber().equals(number)) 
       allContacts.add(new PersonalContact(name, number)); 
     } 
     while (personalContacts.moveToNext()); 
    } 

    if (personalContacts != null) 
     personalContacts.close(); 

    return allContacts; 

Wie bekomme ich nur jeden Kontakt einmal?

Answer 1

wird eine einfache und bessere Lösung nur eine hashmap zu benutzen, um Dubletten zu entfernen

ArrayList<PersonalContact> allContacts = new ArrayList<>(); 

    Cursor personalContacts = getContext().getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, 
    ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME); 

    if (personalContacts != null && personalContacts.moveToFirst()) 
    { 
     do 
     { 
      String name = personalContacts.getString(personalContacts.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)); 
      String number = personalContacts.getString(personalContacts.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); 

    String normalizedNumber = number.replaceAll(" ","").replaceAll("-", ""); 
      if(duplicates.get(normalizedNumber)) 
       return; 
      duplicates.put(normalizedNumber,true); 


      allContacts.add(new PersonalContact(name, number)); 
     } 
     while (personalContacts.moveToNext()); 
    } 

    if (personalContacts != null) 
     personalContacts.close(); 

    return allContacts;