如何有效地获取本地电话联系人

Posted 2023-04-17

【中文标题】如何有效地获取本地电话联系人

【英文标题】：how to fetch local phone contacts effeciently

【发布时间】：2016-06-19 09:27:00

【问题描述】：

我正在使用以下代码来获取本地电话联系人。它工作正常，并且可以非常快速地获取联系人。

但是问题来了，在我的联系人列表中，很少有联系人拥有多个电子邮件和多个电话号码。

如果有多个电话或电子邮件地址，它会多次重复同一个人的姓名。 如果我改变 ContactsContract.CommonDataKinds.Email.CONTENT_URI 到ContactsContract.CommonDataKinds.Phone.CONTENT_URI 然后它会根据联系人存在的电话号码重复姓名。请帮忙

 private static final String[] PROJECTION = new String[]
            ContactsContract.CommonDataKinds.Email.CONTACT_ID,
            ContactsContract.CommonDataKinds.Nickname.DISPLAY_NAME,
            ContactsContract.CommonDataKinds.Email.DATA,
            ContactsContract.CommonDataKinds.Phone.NUMBER,
    ;

ContentResolver cr = mContext.getContentResolver();
Cursor cursor = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, PROJECTION, null, null, null);

if (cursor != null) 
    try 
        final int contactIdIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.CONTACT_ID);
        final int displayNameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
        final int emailIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA);
        final int phoneIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
        long contactId;

        String displayName, email, phone, photo;
        while (cursor.moveToNext()) 
            mNK_UserModel = new NK_Contact();
            contactId = cursor.getLong(contactIdIndex);
            displayName = cursor.getString(displayNameIndex);

            //Adding display name
            mNK_UserModel.setFirstName(displayName);

            Util.DEBUG_LOG(1, "contact", "contact id :" + contactId);

            al_PhoneContacts.add(mNK_UserModel);
        
     finally 
        cursor.close();
    

【参考方案1】：

如果我不得不猜测，我会说您的 while 循环中缺少一个“中断”。因为游标试图获取下一个可用的列条目。但是看看我过去对我有用的解决方案。

它为每一行使用单独的游标，让您可以更好地控制数据。

                Map<String, String> contactDataMap = new HashMap<String, String>();
                Uri contactData = data.getData();
                Cursor cursor =  getContentResolver().query(contactData, null, null, null, null);
                cursor.moveToFirst();
                String name = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
                String id = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
                contactDataMap.put(NAME, (name != null)?name:"");

                if (Integer.parseInt(cursor.getString(
                        cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) 
                    Cursor pCur = getContentResolver().query(
                            ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                            null,
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
                            new String[]id,
                            null);

                    while (pCur.moveToNext()) 
                        String number = pCur.getString(pCur.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.NUMBER));
                        contactDataMap.put(PHONE, (number != null)?number:"");
                        break;
                    
                    pCur.close();
                

                Cursor emailCur = getContentResolver().query(
                        ContactsContract.CommonDataKinds.Email.CONTENT_URI,
                        null,
                        ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?",
                        new String[]id, null);

                while (emailCur.moveToNext()) 
                    String email = emailCur.getString(
                            emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));

                    contactDataMap.put(MAIL, (email != null)?email:"");
                    break;
                
                emailCur.close();

                cursor.close();