有什么办法可以缩短这个时间吗？ 我用光标运行并获取姓名、电话号码和电子邮件

如果我从查询循环中删除电话号码查询，它将在 3 秒内结束

知道如何改进该查询吗？

也许我在查询中做错了什么？

(显然我正在异步执行，但仍然......用户等不及的时间很长)

希望有人可以分享他对此的看法

这是我的代码

ContentResolver cr = getContentResolver();
            Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
                    null, null, null, null);
            if (cur.getCount() > 0) {
                while (cur.moveToNext()) {
                    AddressBookEntity adr = new AddressBookEntity();
                    String id = cur.getString(cur
                            .getColumnIndex(ContactsContract.Contacts._ID));
                    String name = cur
                            .getString(cur
                                    .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                    adr.fullName = name;

                    Cursor emailCur = cr
                            .query(ContactsContract.CommonDataKinds.Email.CONTENT_URI,
                                    null,
                                    ContactsContract.CommonDataKinds.Email.CONTACT_ID
                                            + " = ?", new String[] { id },
                                    null);
                    while (emailCur.moveToNext()) {
                        // This would allow you get several email addresses
                        // if the email addresses were stored in an array
                        String email = emailCur
                                .getString(emailCur
                                        .getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
                        if (!Utils.IsNullOrEmptyString(email)) {
                            adr.email = email;
                        }

                    }
                    emailCur.close();

                    if (Integer
                            .parseInt(cur.getString(cur
                                    .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
                        Cursor pCur = cr
                                .query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                                        null,
                                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID
                                                + " = ?",
                                        new String[] { id }, null);
                        int phoneIndex = 0;
                        while (pCur.moveToNext()) {
                            String number = pCur.getString(pCur
                                    .getColumnIndex(Phone.NUMBER));

                            String country = Utils.GetCountryFromNumber(
                                    number, app);
                            number = Utils.GetFullPhoneNumber(number, app);
                            if (phoneIndex == 0) {
                                if (!Utils.IsNullOrEmptyString(number)) {
                                    adr.contactAdressBookId = id;
                                    adr.phoneNumber = number;
                                    adr.userInsertedId = app.userCred.userId;
                                    adr.country = country;
                                    myContacts.add(adr);
                                }
                            } else {
                                if (!Utils.IsNullOrEmptyString(number)) {
                                    AddressBookEntity adrMore = new AddressBookEntity();
                                    adrMore.fullName = adrMore.fullName;
                                    adrMore.country = adrMore.country;
                                    adrMore.email = adrMore.email;
                                    adrMore.phoneNumber = number;
                                    adrMore.contactAdressBookId = id;
                                    adrMore.country = country;
                                    myContacts.add(adrMore);
                                }
                            }
                        }
                        pCur.close();
                    }
                }
                cur.close();

最佳答案

使用以下 59 个联系人的代码，我在模拟器上得到了以下结果:

      D  ╔══════ query execution stats ═══════
      D  ║    got 59 contacts
      D  ║    query took 0.012 s (12 ms)
      D  ╚════════════════════════════════════

好的，那是最好的时间，但平均时间是 25-35 毫秒(对于 59 个联系人)，在一些 onClick 回调中添加以下代码并运行几次以获得平均时间，在你的情况下你应该得到 30 * 700/59 = ~300-400 毫秒，而不是 3 秒，更不用说一分钟了 ;)

它使用设置为 API 级别 18 中添加的 Contactables.CONTENT_URI 的 Uri，但您可以在为 18 之前的 API 设备构建时使用 ContactsContract.Data.CONTENT_URI

List<AddressBookContact> list = new LinkedList<AddressBookContact>();
LongSparseArray<AddressBookContact> array = new LongSparseArray<AddressBookContact>();
long start = System.currentTimeMillis();

String[] projection = {
        ContactsContract.Data.MIMETYPE,
        ContactsContract.Data.CONTACT_ID,
        ContactsContract.Contacts.DISPLAY_NAME,
        ContactsContract.CommonDataKinds.Contactables.DATA,
        ContactsContract.CommonDataKinds.Contactables.TYPE,
};
String selection = ContactsContract.Data.MIMETYPE + " in (?, ?)";
String[] selectionArgs = {
        ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE,
        ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE,
};
String sortOrder = ContactsContract.Contacts.SORT_KEY_ALTERNATIVE;

Uri uri = ContactsContract.CommonDataKinds.Contactables.CONTENT_URI;
// we could also use Uri uri = ContactsContract.Data.CONTENT_URI;

// ok, let's work...
Cursor cursor = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder);

final int mimeTypeIdx = cursor.getColumnIndex(ContactsContract.Data.MIMETYPE);
final int idIdx = cursor.getColumnIndex(ContactsContract.Data.CONTACT_ID);
final int nameIdx = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
final int dataIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Contactables.DATA);
final int typeIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Contactables.TYPE);

while (cursor.moveToNext()) {
    long id = cursor.getLong(idIdx);
    AddressBookContact addressBookContact = array.get(id);
    if (addressBookContact == null) {
        addressBookContact = new AddressBookContact(id, cursor.getString(nameIdx), getResources());
        array.put(id, addressBookContact);
        list.add(addressBookContact);
    }
    int type = cursor.getInt(typeIdx);
    String data = cursor.getString(dataIdx);
    String mimeType = cursor.getString(mimeTypeIdx);
    if (mimeType.equals(ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE)) {
        // mimeType == ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE
        addressBookContact.addEmail(type, data);
    } else {
        // mimeType == ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE
        addressBookContact.addPhone(type, data);
    }
}
long ms = System.currentTimeMillis() - start;
cursor.close();

// done!!! show the results...
int i = 1;
for (AddressBookContact addressBookContact : list) {
    Log.d(TAG, "AddressBookContact #" + i++ + ": " + addressBookContact.toString(true));
}
final String cOn = "<b><font color='#ff9900'>";
final String cOff = "</font></b>";
Spanned l1 = Html.fromHtml("got " + cOn + array.size() + cOff + " contacts<br/>");
Spanned l2 = Html.fromHtml("query took " + cOn + ms / 1000f + cOff + " s (" + cOn + ms + cOff + " ms)");

Log.d(TAG, "\n\n╔══════ query execution stats ═══════" );
Log.d(TAG, "║    " + l1);
Log.d(TAG, "║    " + l2);
Log.d(TAG, "╚════════════════════════════════════" );
SpannableStringBuilder msg = new SpannableStringBuilder().append(l1).append(l2);

LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
TextView tv = new TextView(this);
tv.setTextSize(20);
tv.setBackgroundColor(0xff000033);
tv.setPadding(24, 8, 24, 24);
tv.setText(msg);
ll.addView(tv);
ListView lv = new ListView(this);
lv.setAdapter(new ArrayAdapter<AddressBookContact>(this, android.R.layout.simple_list_item_1, list));
ll.addView(lv);
new AlertDialog.Builder(this).setView(ll).setPositiveButton("close", null).create().show();

帮助器 AddressBookContact 类:

class AddressBookContact {
    private long id;
    private Resources res;
    private String name;
    private LongSparseArray<String> emails;
    private LongSparseArray<String> phones;

    AddressBookContact(long id, String name, Resources res) {
        this.id = id;
        this.name = name;
        this.res = res;
    }

    @Override
    public String toString() {
        return toString(false);
    }

    public String toString(boolean rich) {
        SpannableStringBuilder builder = new SpannableStringBuilder();
        if (rich) {
            builder.append("id: ").append(Long.toString(id))
                    .append(", name: ").append("\u001b[1m").append(name).append("\u001b[0m");
        } else {
            builder.append(name);
        }

        if (phones != null) {
            builder.append("\n\tphones: ");
            for (int i = 0; i < phones.size(); i++) {
                int type = (int) phones.keyAt(i);
                builder.append(ContactsContract.CommonDataKinds.Phone.getTypeLabel(res, type, ""))
                        .append(": ")
                        .append(phones.valueAt(i));
                if (i + 1 < phones.size()) {
                    builder.append(", ");
                }
            }
        }

        if (emails != null) {
            builder.append("\n\temails: ");
            for (int i = 0; i < emails.size(); i++) {
                int type = (int) emails.keyAt(i);
                builder.append(ContactsContract.CommonDataKinds.Email.getTypeLabel(res, type, ""))
                        .append(": ")
                        .append(emails.valueAt(i));
                if (i + 1 < emails.size()) {
                    builder.append(", ");
                }
            }
        }
        return builder.toString();
    }

    public void addEmail(int type, String address) {
        if (emails == null) {
            emails = new LongSparseArray<String>();
        }
        emails.put(type, address);
    }

    public void addPhone(int type, String number) {
        if (phones == null) {
            phones = new LongSparseArray<String>();
        }
        phones.put(type, number);
    }
}

关于Android 获取所有联系人列表(姓名、电子邮件、电话)需要超过一分钟的时间来获取大约 700 个联系人，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26804387/