问题
In my code the contact fetching takes too much time to fetch the contacts and show in the application. Please guide me where i am wrong and what should i correct in order to make execution time fast.
Here is my code.
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null, null );
String phone = null;
List<String> phonenumber = new ArrayList<String>();
String emailContact = null;
String emailType = null;
String image_uri = "";
Bitmap bitmap = 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));
image_uri = cur
.getString(cur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
if (Integer
.parseInt(cur.getString(cur
.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
{
System.out.println("name : " + name + ", ID : " + id);
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = ?", new String[]{id}, null);
Log.e("pCur","dfgfdg "+pCur.getCount());
while (pCur.moveToNext())
{
phone = pCur
.getString(pCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
// contactid=pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
/* phonenumber.add(pCur
.getString(pCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));`*/
Log.e("phone" ,phone);
}
pCur.close();
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));
if(TextUtils.isEmpty(emailContact)||emailContact.equalsIgnoreCase(null)||emailContact.equalsIgnoreCase(""))
{
emailContact="";
Log.e("isEmpty","isEmpty " + emailContact);
}
else
{
Log.e("gfdszfg","Email " + emailContact);
}
/* emailType = emailCur
.getString(emailCur
.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));*/
Log.e("gfdszfg","Email " + emailContact);
}
emailCur.close();
}
if (image_uri != null)
{
System.out.println(Uri.parse(image_uri));
try
{
bitmap = MediaStore.Images.Media
.getBitmap(this.getContentResolver(),
Uri.parse(image_uri));
System.out.println(bitmap);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
mList.add(new Contacts(name, phone, image_uri,emailContact));
emailContact="";
}
cur.close();
mMyContactsAdapter = new MyContactsAdapter(MainActivity.this, mList);
mcontact.setAdapter(mMyContactsAdapter);
}
and more over in my code my contact fetching while loop is looping 3 times i dont know why.
回答1:
I have faced this situation as you are in right now. Try below code
public static ArrayList ReadContactsSpecialWay(Context context) {
StringBuffer contactBuffer = new StringBuffer();
StringBuffer emailBuffer = new StringBuffer();
ArrayList<String> contactList = new ArrayList<>();
ArrayList<String> emailList = new ArrayList<>();
ArrayList<ContactModel> contactModelsList = new ArrayList<>();
HashMap<Integer, Boolean> hashMap = new HashMap<Integer, Boolean>();
String[] emailsAndContacts = new String[2];
// Phone numbers
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[]{
ContactsContract.CommonDataKinds.Phone.CONTACT_ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
Cursor phoneNumbers = context.getContentResolver().query(uri, projection, null, null, null);
int indexContactID = phoneNumbers.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID);
int indexName = phoneNumbers.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
int indexNumber = phoneNumbers.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
while (phoneNumbers.moveToNext()) {
Integer contactId = phoneNumbers.getInt(indexContactID);
String contactName = phoneNumbers.getString(indexName);
String contactNumber = phoneNumbers.getString(indexNumber).replace(" ", "");
ContactModel contactModel = new ContactModel();
contactModel.setContactPhone(contactNumber);
contactNumber = contactModel.getContactPhone();
if (hashMap.containsKey(contactId))
contactModel.setContactName(contactName + " (" + contactNumber + ")");
else {
hashMap.put(contactId, true);
contactModel.setContactName(contactName);
}
contactModelsList.add(contactModel);
contactList.add(contactNumber);
LogHelper.informationLog(contactNumber + " " + contactName);
contactBuffer.append(contactNumber + ",");
}
phoneNumbers.close();
// Emails
uri = ContactsContract.CommonDataKinds.Email.CONTENT_URI;
projection = new String[]{
ContactsContract.CommonDataKinds.Email.CONTACT_ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Email.DATA
};
Cursor emails = context.getContentResolver().query(uri, projection, null, null, null);
indexContactID = emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.CONTACT_ID);
indexName = emails.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
int indexData = emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA);
while (emails.moveToNext()) {
Integer contactId = emails.getInt(indexContactID);
String contactName = emails.getString(indexName);
String contactEmail = emails.getString(indexData).toLowerCase();
ContactModel contactModel = new ContactModel();
contactModel.setEmailAddress(contactEmail);
if (hashMap.containsKey(contactId)) {
contactModel.setEmailName(contactName + " (" + contactEmail + ")");
} else {
contactModel.setEmailName(contactName);
hashMap.put(contactId, true);
}
contactModelsList.add(contactModel);
if (contactEmail != null && !emailList.contains(contactEmail)) {
emailList.add(contactEmail);
LogHelper.informationLog(contactEmail + " " + contactName);
emailBuffer.append(contactEmail + ",");
}
}
emails.close();
if (contactBuffer.toString().length() > 0) {
emailsAndContacts[0] = contactBuffer.toString().substring(0, (contactBuffer.toString().length() - 1));
} else
emailsAndContacts[0] = "";
if (emailBuffer.toString().length() > 0) {
emailsAndContacts[1] = emailBuffer.toString();
} else {
emailsAndContacts[1] = "";
}
if(contactModelsList.size() == 0)
return null;
else {
ArrayList specialList = new ArrayList();
specialList.add(contactModelsList);
specialList.add(emailsAndContacts);
return specialList;
}
}
It will definitely help you out.
回答2:
Try this, using AsyncTask. Use it while launching apps default activity on background and fetch the array while using on another activity
class LoadContact extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... voids) {
// Get Contact list from Phone
Uri CONTENT_URI = ContactsContract.Contacts.CONTENT_URI;
String _ID = ContactsContract.Contacts._ID;
String DISPLAY_NAME = ContactsContract.Contacts.DISPLAY_NAME;
Uri PhoneCONTENT_URI = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String Phone_CONTACT_ID = ContactsContract.CommonDataKinds.Phone.CONTACT_ID;
String NUMBER = ContactsContract.CommonDataKinds.Phone.NUMBER;
ContentResolver contentResolver = getContentResolver();
/**
* @discussion Query contact and return name and contact Id.
*/
Cursor cursor = contentResolver.query(CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");
if (cursor.getCount() > 0) {
while (cursor.moveToNext()) {
Bitmap bit_thumb = null;
String contact_id = cursor.getString(cursor.getColumnIndex(_ID));
String name = cursor.getString(cursor.getColumnIndex(DISPLAY_NAME));
String image_thumb = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_THUMBNAIL_URI));
Cursor phoneCursor = contentResolver.query(PhoneCONTENT_URI, null, Phone_CONTACT_ID + " = ?", new String[]{contact_id}, null);
try {
if (image_thumb != null) {
bit_thumb = MediaStore.Images.Media.getBitmap(contentResolver, Uri.parse(image_thumb));
}
} catch (IOException e) {
e.printStackTrace();
}
while (phoneCursor.moveToNext()) {
String phoneNumber = phoneCursor.getString(phoneCursor.getColumnIndex(NUMBER));
final SelectUser selectUser = new SelectUser();
selectUser.setName(name);
selectUser.setContactId(contact_id + "" + phoneNumber);
selectUser.setThumb(bit_thumb);
selectUser.setPhone(phoneNumber);
if (selectUser.getPhone() != null && selectUser.getPhone().length() > 0 && !num.equalsIgnoreCase(phoneNumber)) {
num = phoneNumber;
selectUsers.add(selectUser);
}
}
phoneCursor.close();
Cursor cur1 = contentResolver.query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?",
new String[]{contact_id}, null);
while (cur1.moveToNext()) {
String email = cur1.getString(cur1.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
final SelectUser selectUser = new SelectUser();
selectUser.setName(name);
selectUser.setContactId(contact_id + "" + email);
selectUser.setThumb(bit_thumb);
selectUser.setEmail(email);
if (selectUser.getEmail() != null && selectUser.getEmail().length() > 0 && !userEmail.equalsIgnoreCase(email)) {
userEmail=email;
selectUsers.add(selectUser);
}
}
cur1.close();
}
}
cursor.close();
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
isContactLoaded = true;
}
}
来源：https://stackoverflow.com/questions/42250015/contact-fetching-takes-too-much-time