将检索到的联系人存储在我们自己的android应用中的最佳方法？

Question

I tried using hashmap, but some suggested that hash map is not reliable to store contacts. And I cannot perform retrieve operation every time I run the app. So suggest me any useful way to store contacts. If possible provide me the link, so that it helps me for further reference.

Answer 1

This is code for retrieve contacts from phone

 Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);

  while (cursor.moveToNext()) {

   String name = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME_PRIMARY));

   String phonenumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

 }