获取 Android 中的所有联系人数据 - 多个 URI

Question

我正在尝试一次性获取所有联系人数据。 我需要 ： * 名 * 姓 * 电话号码 * 版本 等等

为此，我正在对整个联系人进行查询，然后，对于每个联系人 ID，我都会获取相关数据。

问题在于它需要很多时间，大约 400 个联系人需要超过 10 秒。 （在三星 i9300 上运行 4.4.2）

我不需要向用户显示任何内容，我只是在后台将联系人与我的服务器同步，所以我没有任何 UI 问题... 只需遍历联系人，看看需要如何更新并将他添加到我的 ArrayList， 然后 POST 到服务器。

public static void getAllContactsFromDevice() {

        long startTime = System.currentTimeMillis();
        Log.d(TAG, "startTime: " + startTime);

        //  Get all contacts by cursor
        ContentResolver cr = getContext().getContentResolver();
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
                null, null, null);
        if (cursor.moveToFirst() && cursor.getCount() > 0) {
            while (cursor.isAfterLast() == false) {
                // get contact id on the device DB.
                String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));

                String contactNumber = null;
                //  Get all phone numbers.
                Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactId, null, null);
                // if the user has numbers
                // get just the first one for now
                if (phones.moveToNext())
                    contactNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                // close the cursor to prevent leak
                phones.close();

                // if we dont have a phone number, continue to next contact.
                if (contactNumber == null) {
                    cursor.moveToNext();
                    continue;
                }

                // get first and last name by contact id
                String[] projection = new String[]{ContactsContract.CommonDataKinds.StructuredName.FAMILY_NAME, ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME, ContactsContract.CommonDataKinds.StructuredName.MIDDLE_NAME};
                String where = ContactsContract.CommonDataKinds.StructuredName.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?";
                String[] whereParameters = new String[]{contactId, ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE};
                Cursor nameCur = cr.query(ContactsContract.Data.CONTENT_URI, projection, where, whereParameters, null);

                String given = null;
                String family = null;
                try {
                    if (nameCur.getCount() > 0) {
                        nameCur.moveToFirst();
                        given = nameCur.getString(nameCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME));
                        family = nameCur.getString(nameCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredName.FAMILY_NAME));
                        nameCur.close();
                    }
                    // if there is no name, continue to next contact.
                    else {
                        nameCur.close();
                        cursor.moveToNext();
                        continue;
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                    nameCur.close();
                }


                if (given == null || given == "null")
                    given = "";
                if (family == null || family == "null")
                    family = "";

                String[] mProjection = new String[]{ContactsContract.RawContacts.VERSION};
                String[] mWhereParameters = new String[]{contactId};
                String mWhere = ContactsContract.CommonDataKinds.StructuredName.CONTACT_ID + " = ? ";
                Cursor mCursor = cr.query(ContactsContract.RawContacts.CONTENT_URI, mProjection, mWhere, mWhereParameters, null);

                int contactVersion = 0;
                try {
                    if (mCursor.getCount() > 0) {
                        mCursor.moveToFirst();
                        contactVersion = mCursor.getInt(mCursor.getColumnIndex(ContactsContract.RawContacts.VERSION));
                        mCursor.close();
                    } else {
                        mCursor.close();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                    mCursor.close();
                }
                cursor.moveToNext();

            }

        }
        cursor.close();
        long endTime = System.currentTimeMillis();
        Log.d(TAG, "endTime: " + endTime);
        Log.d(TAG, "total time: " + (endTime - startTime));
    }

总时间：18280 毫秒

我查看了HERE developer.android.com，但没有发现任何有用的东西。

this answer 也没有多大帮助。

Answer 1

问题在于，对于每个联系人，您执行的查询很少：电话号码表、结构化姓名表等。您希望将它们全部批处理并对主要联系人列表执行单个查询，对电话号码列表进行单个查询等.

在拥有约 400 个联系人和完整数据的 Genymotion 上，这种方法可提供 30 倍的性能提升（从 2.8 秒到 100 毫秒）。这是我使用的代码：

private static <TLeft, TRight> Function<Pair<TLeft, TRight>, TLeft> getExtractLeftFunction() {
  return new Function<Pair<TLeft, TRight>, TLeft>() {
    @Override
    public TLeft apply(Pair<TLeft, TRight> input) {
      return input.first;
    }
  };
}

private static <TLeft, TRight> Map<TLeft, TRight> toMap(Iterable<Pair<TLeft, TRight>> pairs) {
  Map<TLeft, TRight> result = Maps.newHashMap();

  for (Pair<TLeft, TRight> pair : pairs) {
    result.put(pair.first, pair.second);
  }

  return result;
}

private static class Name {
  public final String mGivenName;
  public final String mFamilyName;

  private Name(String givenName, String familyName) {
    mGivenName = givenName;
    mFamilyName = familyName;
  }
}

public void getAllContactsFromDevice() {

  long startTime = System.currentTimeMillis();
  Log.d(TAG, "startTime: " + startTime);

  //  Get all contacts by cursor
  ContentResolver cr = getContentResolver();

  ImmutableList<Long> contactIds = ProviderAction
      .query(Contacts.CONTENT_URI)
      .projection(Contacts._ID)
      .perform(getContentResolver())
      .toFluentIterable(SingleRowTransforms.getColumn(Contacts._ID).asLong())
      .toImmutableList();

  Map<Long, String> phonesMap = toMap(
      ProviderAction.query(Phone.CONTENT_URI)
          .projection(
              Phone.CONTACT_ID,
              Phone.NUMBER
          )
          .whereIn(Phone.CONTACT_ID, contactIds)
          .perform(getContentResolver())
          .toFluentIterable(getToPairFunction(
              SingleRowTransforms.getColumn(Phone.CONTACT_ID).asLong(),
              SingleRowTransforms.getColumn(Phone.NUMBER).asString())
          )
  );

  Map<Long, String> contactsWithPhones = Maps.filterValues(phonesMap, Predicates.notNull());

  Map<Long, Name> contactNamesMap = toMap(ProviderAction
      .query(Data.CONTENT_URI)
      .projection(
          StructuredName.CONTACT_ID,
          StructuredName.FAMILY_NAME,
          StructuredName.GIVEN_NAME
      )
      .whereIn(StructuredName.CONTACT_ID, contactsWithPhones.keySet())
      .perform(getContentResolver())
      .toFluentIterable(getToPairFunction(
          SingleRowTransforms.getColumn(Phone.CONTACT_ID).asLong(),
          new Function<Cursor, Name>() {

            private Function<Cursor, String> mFamilyNameGetter = SingleRowTransforms.getColumn(StructuredName.FAMILY_NAME).asString();
            private Function<Cursor, String> mGivenNameGetter = SingleRowTransforms.getColumn(StructuredName.GIVEN_NAME).asString();

            @Override
            public Name apply(Cursor input) {
              return new Name(
                  mGivenNameGetter.apply(input),
                  mFamilyNameGetter.apply(input)
              );
            }
          }
      ))
  );

  Map<Long, Integer> versions = toMap(ProviderAction.query(RawContacts.CONTENT_URI)
      .projection(
          StructuredName.CONTACT_ID,
          RawContacts.VERSION
      )
      .whereIn(StructuredName.CONTACT_ID, contactNamesMap.keySet())
      .perform(getContentResolver())
      .toFluentIterable(getToPairFunction(
          SingleRowTransforms.getColumn(StructuredName.CONTACT_ID).asLong(),
          SingleRowTransforms.getColumn(RawContacts.VERSION).asInteger())
      )
  );

  long endTime = System.currentTimeMillis();
  Log.d(TAG, "endTime: " + endTime);
  Log.d(TAG, "total time: " + (endTime - startTime));
}

我正在使用android-db-commons（免责声明：我是合著者）来执行所有查询并处理输出。该库不支持将查询结果放入 Map (yet!)，这是您要在此处执行的操作，所以上面的代码有点乱，但它仍然胜过同时处理多个游标 IMO。