我想从单个查询中获取firstname，lastname，email id的android联系人详细信息。如果我通过以下过程获取联系人。它需要花费大量的时间来获取和过滤。请给出解决方案来解决这个问题。现在我正在这样做。请查看以下代码。
public static JSONArray getMABTosendServer(Context context, UserBean user,
DatabaseUserManager userManager) throws JSONException {
hashedEmails = new HashMap<String, AddressBean>();
JSONArray jsonArray = new JSONArray();
HashMap<String, String> emailValues = new HashMap<String, String>();
StringBuffer sb = new StringBuffer();
sb.append("......Contact Details.....");
ContentResolver cr = context.getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null, null);
String emailContact = "";
String emailType = "";
Cursor nameCursor = null;
String firstName = "";
String lastName = "";
String id = null;
long userLastContactId = 0;
int i = 0;
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
i++;
id = cur.getString(cur
.getColumnIndex(ContactsContract.Contacts._ID));
if (user != null && user.getLastContactId() == null) {
userLastContactId = 0;
} else {
userLastContactId = Long.parseLong(user.getLastContactId());
}
if (Long.parseLong(id) > userLastContactId) {
Uri contactUri = ContentUris.withAppendedId(
Contacts.CONTENT_URI, Long.parseLong(id));
Uri dataUri = Uri.withAppendedPath(contactUri,
Contacts.Data.CONTENT_DIRECTORY);
nameCursor = context.getContentResolver().query(dataUri,
null, Data.MIMETYPE + "=?",
new String[] { StructuredName.CONTENT_ITEM_TYPE },
null);
while (nameCursor.moveToNext()) {
firstName = nameCursor.getString(nameCursor
.getColumnIndex(Data.DATA2));
lastName = nameCursor.getString(nameCursor
.getColumnIndex(Data.DATA3));
Cursor emailCur = cr
.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID
+ " = ?", new String[] { id },
null);
while (emailCur.moveToNext()) {
emailContact = emailCur
.getString(emailCur
.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
emailType = emailCur
.getString(emailCur
.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));
sb.append("\nEmail:" + emailContact + "Email type:"
+ emailType);
if (EMAIL_ADDRESS_PATTERN.matcher(
emailContact.trim()).matches()
&& !emailValues.containsKey(emailContact)) {
emailValues
.put(emailContact, String.valueOf(i));
JSONObject jsonObject = new JSONObject();
AddressBean ab = new AddressBean();
if (firstName == null) {
firstName = "";
}
if (lastName == null) {
lastName = "";
}
ab.setFirstName(firstName);
ab.setLastName(lastName);
ab.setEmailId(emailContact);
jsonObject.put("firstName", firstName);
jsonObject.put("lastName", lastName);
jsonObject.put("email", Encryption
.encryptUsingSha1(emailContact
.toLowerCase().trim()));
hashedEmails.put(Encryption
.encryptUsingSha1(emailContact), ab);
jsonArray.put(jsonObject);
}
}
emailCur.close();
}
nameCursor.close();
}
}
cur.close();
user.setLastContactId(id);
userManager.updateUser(user);
}
return jsonArray;
}
答案 0 :(得分：1)
public class ReadContacts extends AsyncTask<Void, Void, Void>{
private ListView contactsList;
private Context cntx;
private Constant constants;
static final String[] CONTACTS_SUMMARY_PROJECTION = new String[] {
Contacts._ID, // 0
Contacts.DISPLAY_NAME, // 1
Contacts.STARRED, // 2
Contacts.TIMES_CONTACTED, // 3
Contacts.CONTACT_PRESENCE, // 4
Contacts.PHOTO_ID, // 5
Contacts.LOOKUP_KEY, // 6
Contacts.HAS_PHONE_NUMBER, // 7
};
private long contactId;
private String display_name;
private String phoneNumber;
private ArrayList<ContactsWrapper>contactWrap = new ArrayList<ContactsWrapper>();
private HashMap<Long, ArrayList<ContactsWrapper>>map = new HashMap<Long, ArrayList<ContactsWrapper>>();
private ContactsAdapter adapter;
private DataController controller;
public ReadContacts(Context cntx, ListView contactList) {
// TODO Auto-generated constructor stub
this.cntx = cntx;
constants = new Constant();
this.contactsList = contactList;
controller = DataController.getInstance();
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
if(!(controller.contactWrapper.size()>0))
constants.displayProgressDialog(cntx, "Loading Contacts...", "Please Wait");
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
if(!(controller.contactWrapper.size()>0))
{
try {
String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("
+ Contacts.HAS_PHONE_NUMBER + "=1) AND ("
+ Contacts.DISPLAY_NAME + " != '' ))";
Cursor c = cntx.getContentResolver().query(Contacts.CONTENT_URI, CONTACTS_SUMMARY_PROJECTION, select,
null, Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
for(int i=0;i<c.getCount();i++)
{
// contactWrap.clear();
try {
contactId = 0;
String hasPhone = "";
display_name = "";
phoneNumber = "";
c.moveToPosition(i);
contactId = c.getLong(0);
display_name = c.getString(1);
hasPhone = c.getString(7);
if (hasPhone.equalsIgnoreCase("1"))
hasPhone = "true";
else
hasPhone = "false" ;
if (Boolean.parseBoolean(hasPhone))
{
Cursor phones = cntx.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId,null, null);
while (phones.moveToNext())
{
int indexPhoneType = phones.getColumnIndexOrThrow(Phone.TYPE);
String phoneType = phones.getString(indexPhoneType);
phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
String lookupKey = phones.getString(phones.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
contactWrap.add(new ContactsWrapper(contactId, display_name, phoneNumber,lookupKey,false));
}
// map.put(contactId, new ArrayList<ContactsWrapper>(contactWrap));
phones.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
controller.contactWrapper = contactWrap;
}
catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
constants.dismissDialog();
adapter = new ContactsAdapter(cntx);
contactsList.setAdapter(adapter);
}
}