Android 读取所有联系人数据

我使用的是Android 2.3.3，API级别为10。我想读取所有联系人和相关数据，例如所有电子邮件地址、电话号码、自定义字段。。。 我这样试过：

Uri contactUri = ContactsContract.Contacts.CONTENT_URI;
Cursor contacts = managedQuery(contactUri, null, null, null, null );

contacts.moveToFirst();

do {
    for(int i=0;i<contacts.getColumnCount();i++)
    {
         System.out.println(contacts.getColumnName(i) + ": " + contacts.getString(i));
    }

    System.out.println("============\n\n");

} while (contacts.moveToNext());

contacts.close();

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电话号码、电子邮件地址在哪里。。。？谢谢你的提示

参见合同API示例

看看这个例子

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谢谢，谷歌代码示例的链接和从那里链接的教程（）非常有用：-）

times_contacted: 0
contact_status: null
custom_ringtone: null
has_phone_number: 1
phonetic_name: null
phonetic_name_style: 0
contact_status_label: null
lookup: [removed]
contact_status_icon: null
last_time_contacted: 0
display_name: [removed]
sort_key_alt: [removed]
in_visible_group: 1
_id: 101
starred: 0
sort_key: [removed]
display_name_alt: [removed]
contact_presence: null
display_name_source: 40
contact_status_res_package: null
contact_chat_capability: null
contact_status_ts: null
photo_id: null
send_to_voicemail: 0

ContentResolver cr = getContentResolver();
    Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
            null, null, null, null);
    if (cur.getCount() > 0) {
    while (cur.moveToNext()) {
        String id = cur.getString(
                    cur.getColumnIndex(ContactsContract.Contacts._ID));
    String name = cur.getString(
                    cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
    if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
        //Query phone here.  Covered next
        }
        }
}
}