java - 如何在 Android 上访问 API 17 的联系人

Question

我希望能够在 Android 应用程序上读取联系人信息，但对于低于 23 的 API 似乎无法实现。我打算将其用于 API 17。我怎样才能实现这一目标？

Answer 1

此代码应该在 API5 及更高版本中工作，使用枚举 ContactsContract.CommonDataKinds 您可以访问所有字段。

 ContentResolver resolver = context.getContentResolver();
    Cursor contacts = null;
    try {
        contacts = resolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
        if (contacts.moveToFirst()) {
            do {
                String contactId = contacts.getString(contacts.getColumnIndex(ContactsContract.Contacts._ID));

                Cursor emails = null;
                Cursor phones = null;
                try {
                    emails = resolver.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, ContactsContract.CommonDataKinds.Email.CONTACT_ID
                            + " = " + contactId, null, null);
                    while (emails.moveToNext()) {
                        String email = emails.getString(emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
                       object
                    }
                    phones = resolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactId, null, null);
                    while (phones.moveToNext()) {
                        String number = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                        String displayName = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                       phoneContact object
                    }
                } finally {
                    if (emails != null) {
                        emails.close();
                    }
                    if (phones != null) {
                        phones.close();
                    }
                }

            } while (contacts.moveToNext());
        }
    } finally {
        if (contacts != null) {
            contacts.close();
        }
    }