Develop Reference

select all checkboxes using button in android

i am creating listview with checkbox of contact list, i have one button to select all checkboxes of contact listview. and when i set the for (int i = 0; i < 5 ; i++ ) it will select 6 checkboxes and working fine ..but when set lv.getcount(); its showing error....i think its show only getview set value.....because i also use the getview in adapter....how can i solve this problem please suggest me....??
public class Contacts extends Activity implements CompoundButton.OnCheckedChangeListener{
String name, phoneNo;
List<ContactItem> contectItem;
ArrayList<String> valuesList = new ArrayList<String>();
ListView lv;
CompoundButton b1;
String[] sender = null;
boolean flag = true;
int i = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contacts);
lv = (ListView) findViewById(R.id.contactList);
lv.setTranscriptMode(ListView.TRANSCRIPT_MODE_ALWAYS_SCROLL);
method();
}
public void method() {
// ProgressDialog pd = new ProgressDialog(Contacts.this);
// pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);
//pd.setTitle("Please wait");
// pd.setMessage("Loading Contacts...");
// pd.show();
contectItem = new ArrayList<ContactItem>();
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, ContactsContract.Contacts.HAS_PHONE_NUMBER + "= 1", null, "UPPER(" + ContactsContract.Contacts.DISPLAY_NAME + ")ASC");
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
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);
while (pCur.moveToNext()) {
int i = 0;
phoneNo = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
//Toast.makeText(Contacts.this, "Name: " + name + ", Phone No: " + phoneNo, Toast.LENGTH_LONG).show();
ContactItem item = new ContactItem(phoneNo, name);
contectItem.add(item);
}
pCur.close();
contactAdpter adpter = new contactAdpter(this, R.layout.contact_list, contectItem);
lv.setAdapter(adpter);
}
}
}
// pd.dismiss();
}
public void back (View v) {
super.onBackPressed();
finish();
}
public void select_all (View v) {
if (lv.getCount() > 0) {
for (int i = 0; i <lv.getCount(); i++ ) {
View view = lv.getChildAt(i);
CheckBox chk = (CheckBox)view.findViewById(R.id.checkbox1);
chk.setChecked(true);
}
}
}
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int pos = lv.getPositionForView(buttonView);
if (pos != ListView.INVALID_POSITION) {
ContactItem p = contectItem.get(pos);
p.setSelected(isChecked);
if (isChecked) {
if (p.isSelected()) {
valuesList.add(p.getNumber());
}
} else {
valuesList.remove(p.getNumber());
}
}
}

Try to use "lv.getAdapter().getCount()" instade of "lv.getCount()" in select_all method for get count of listview items.

try this way
to get the child of listview
for (int i = 0; i < listView.getAdapter().getCount(); i++) {
View view = listView.getChildAt(i);
}

how to remove duplicate contacts from arraylist

I have created an app in which I am getting the contacts from a device.
But I want to remove the duplicate contacts from the results.
How could I do it?
MainActivity
public class MainActivity extends Activity implements OnItemClickListener {
EditText searchText;
ArrayList<String> phno0 = new ArrayList<String>();
List<String> arrayListNames;
public List<ProfileBean> list;
public SearchableAdapter adapter;
//ProfileBean bean;
String[] cellArray = null;
String contacts;
ListView lv;
String phoneNumber, name;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar actionBar = getActionBar();
lv = (ListView) findViewById(R.id.listview);
list = new ArrayList<ProfileBean>();
getAllCallLogs(this.getContentResolver());
adapter = new SearchableAdapter(getApplication(), list);
lv.setAdapter(adapter);
lv.setItemsCanFocus(false);
lv.setOnItemClickListener(this);
lv.setTextFilterEnabled(true);
}
#Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
}
public void getAllCallLogs(ContentResolver cr) {
Cursor phones = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null,
null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME
+ " ASC");
while (phones.moveToNext()) {
phoneNumber = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
name = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
list.add(new ProfileBean(name, phoneNumber));
}
phones.close();
}
}

If you want to get rid of duplicates, consider using a HashSet instead.
If you can't/don't want to use it, simply check before adding whether the contact is already there.
if (!myList.contains(newContact))
myList.add(newContact);

Add the following checking in the place of list.add(new ProfileBean(name, phoneNumber)); before adding into list:
int flag = 0
if(list.size() == 0){
list.add(new ProfileBean(name, phoneNumber));
}
for(int i=0;i<list.size();i++){
if(!list.get(i).getProfileName().trim().equals(name)){
flag = 1;
}else{
flag =0;
break;
}
}
if(flag == 1){
list.add(new ProfileBean(name, phoneNumber));
}

The following function can be used for removing duplicates from String ArrayList Change it according to your requirement
public ArrayList<String> listWithoutDuplicates(ArrayList<String> duplicateList) {
// Converting ArrayList to HashSet to remove duplicates
LinkedHashSet<String> listToSet = new LinkedHashSet<String>(duplicateList);
// Creating Arraylist without duplicate values
ArrayList<String> listWithoutDuplicates = new ArrayList<String>(listToSet);
return listWithoutDuplicates;
}

use below code list=removeDuplicates(list);
public List<ProfileBean> removeDuplicates(List<ProfileBean> list) {
// Set set1 = new LinkedHashSet(list);
Set set = new TreeSet(new Comparator() {
#Override
public int compare(Object o1, Object o2) {
if (((ProfileBean) o1).getName().equalsIgnoreCase(((ProfileBean) o2).getName()) &&
((ProfileBean)o1).getPhoneNumber().equalsIgnoreCase(((ProfileBean)o2).getPhoneNumber())) {
return 0;
}
return 1;
}
});
set.addAll(list);
final List newList = new ArrayList(set);
return newList;
}

Try to get ContactsContract.Contacts.NAME_RAW_CONTACT_ID) its unique id and its used for update contacts compare your contacts with raw id is same or not as below
private void getAllContactsBackground() {
ContentResolver contentResolver = getActivity().getContentResolver();
Cursor cursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");
if (cursor.getCount() > 0) {
while (cursor.moveToNext()) {
String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
if (cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0) {
Cursor cursorInfo = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);
InputStream inputStream = ContactsContract.Contacts.openContactPhotoInputStream(getActivity().getContentResolver(),
ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, new Long(id)));
Uri person = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, new Long(id));
Uri pURI = Uri.withAppendedPath(person, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
Bitmap photo = null;
if (inputStream != null) {
photo = BitmapFactory.decodeStream(inputStream);
}
while (cursorInfo.moveToNext()) {
ContactsModel info = new ContactsModel();
info.contacts_id = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts._ID));
info.contacts_raw_id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.NAME_RAW_CONTACT_ID));
info.contacts_name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
info.contacts_mobile = cursorInfo.getString(cursorInfo.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).replaceFirst("[^0-9]" + "91", "");
info.contacts_photo = photo;
info.contacts_photoURI = String.valueOf(pURI);
Cursor emailCur = contentResolver.query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?",
new String[]{id}, null);
while (emailCur.moveToNext()) {
info.contacts_email = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
Log.e("email==>", "" + info.contacts_email);
}
emailCur.close();
int flag = 0;
if (arrayListAllContacts.size() == 0) {
arrayListAllContacts.add(info);
}
for (int i = 0; i < arrayListAllContacts.size(); i++) {
if (!arrayListAllContacts.get(i).getContacts_raw_id().trim().equals(info.contacts_raw_id)) {
flag = 1;
} else {
flag = 0;
break;
}
}
if (flag == 1) {
arrayListAllContacts.add(info);
}
}
cursorInfo.close();
}
}
cursor.close();
}
}

how to put progress bar in starting of a new activity

i Have two activities A and B. i used intent to jump from A to B. now in B.
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.list_main);
LoadData();
}
now in LoadData(), i have to load a lot of data, wo i want that when it B starts, it show a Progress bar and after loading the data, it jumps back to my activity B. how can I do this???
here is my load function
public void LoadData(Context context)
{
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '"
+ ("1") + "'";
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";
ContentResolver cr = getContentResolver();
// ContactsContract.Contacts.
// Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
// null, null, ContactsContract.Contacts.DISPLAY_NAME);
// Find the ListView resource.
Cursor cur;
cur = context.getContentResolver().query(
ContactsContract.Contacts.CONTENT_URI,
null,
selection + " AND "
+ ContactsContract.Contacts.HAS_PHONE_NUMBER + "=1",
null, sortOrder);
mainListView = (ListView) findViewById(R.id.mainListView);
// When item is tapped, toggle checked properties of CheckBox and
// Planet.
mainListView
.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View item,
int position, long id)
{
ContactsList planet = listAdapter.getItem(position);
planet.toggleChecked();
PlanetViewHolder viewHolder = (PlanetViewHolder) item
.getTag();
viewHolder.getCheckBox().setChecked(planet.isChecked());
}
});
// Create and populate planets.
planets = (ContactsList[]) getLastNonConfigurationInstance();
// planets = new Planet[10];
// planets.Add("asdf");
ArrayList<ContactsList> planetList = new ArrayList<ContactsList>();
String phoneNumber = null;
String phoneType = null;
count = cur.getCount();
contacts = new ContactsList[count];
if (planets == null)
{
if (cur.getCount() > 0)
{
planets = new ContactsList[cur.getCount()];
int i = 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
Cursor pCur = cr
.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = ?", new String[]
{ id }, null);
// WHILE WE HAVE CURSOR GET THE PHONE NUMERS
while (pCur.moveToNext())
{
// Do something with phones
phoneNumber = pCur
.getString(pCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
phoneType = pCur
.getString(pCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE));
Log.i("Pratik", name + "'s PHONE :" + phoneNumber);
Log.i("Pratik", "PHONE TYPE :" + phoneType);
}
pCur.close();
}
if (phoneNumber != null
&& !planetList.contains(new ContactsList(name,
phoneNumber)))
{
planets = new ContactsList[]
{ new ContactsList(name, phoneNumber) };
contacts[i] = planets[0];
planetList.addAll(Arrays.asList(planets));
}
phoneNumber = null;
i++;
}
}
// for (int i = 0; i < count; i++)
// {
// Log.d("New Selected Names : ", contacts[i].getName());
// }
}
// Set our custom array adapter as the ListView's adapter.
listAdapter = new PlanetArrayAdapter(this, planetList);
mainListView.setAdapter(listAdapter);
Adapter adptr;
adptr = mainListView.getAdapter();
}

Please try this
//////////////////////////////////////////////////////////////////
Edit Check It
public class LoadData extends AsyncTask<Void, Void, Void> {
ProgressDialog progressDialog;
//declare other objects as per your need
#Override
protected void onPreExecute()
{
progressDialog= new ProgressDialog(YourActivity.this);
progressDialog.setTitle("Please Wait..");
progressDialog.setMessage("Loading");
progressDialog.setCancelable(false);
progressDialog.show();
//do initialization of required objects objects here
};
#Override
protected Void doInBackground(Void... params)
{
LoadData();
//do loading operation here
return null;
}
#Override
protected void onPostExecute(Void result)
{
super.onPostExecute(result);
progressDialog.dismiss();
};
}
You can call this using
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.list_main);
LoadData task = new LoadData();
task.execute();
}
for more help read android document
http://developer.android.com/reference/android/os/AsyncTask.html

I am agree with Kanaiya's answer because upto the API level-10 it is fine to call long running tasks on UI thread. But from API-11, any task that takes longer time (nearly more than 5 sec) to complete must be done on background thread. The reason behind this is any task that takes 5 seconds or more on UI thread then ANR(Application Not Responding) i.e. force close happens. To do that we have create some background thread or simply make use of AsyncTask.

You just need to call your LoadData() method in another thread.
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.list_main);
mDailog = ProgressDialog.show(ActivityA.this, "",
"Loading data....!!!", true);
mDailog.show();
new Thread() {
#Override
public void run() {
try {
LoadData();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}.start();
}
Inside your LoadData(), at the end of the method use a handler to send a message to dismiss the progress bar dialog.
Hope this will help you to avoid the complex logic using AsyncTask.

Try this.
public class BActivtiy extends Activity implements Runnable{
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.list_main);
mainListView = (ListView) findViewById(R.id.mainListView);
mainListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View item, int position, long id) {
ContactsList planet = listAdapter.getItem(position);
planet.toggleChecked();
PlanetViewHolder viewHolder = (PlanetViewHolder) item.getTag();
viewHolder.getCheckBox().setChecked(planet.isChecked());
}
});
pd = ProgressDialog.show(BActivity.this, "Title", "Description", true);
Thread t = new Thread(BActivity.this);
t.start();
}
public void LoadData() {
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + ("1") + "'";
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
ContentResolver cr = getContentResolver();
Cursor cur;
cur = this.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, selection + " AND " + ContactsContract.Contacts.HAS_PHONE_NUMBER + "=1", null, sortOrder);
// Create and populate planets.
planets = (ContactsList[]) getLastNonConfigurationInstance();
// planets = new Planet[10];
// planets.Add("asdf");
ArrayList<ContactsList> planetList = new ArrayList<ContactsList>();
String phoneNumber = null;
String phoneType = null;
count = cur.getCount();
contacts = new ContactsList[count];
if (planets == null) {
if (cur.getCount() > 0) {
planets = new ContactsList[cur.getCount()];
int i = 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
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { id }, null);
// WHILE WE HAVE CURSOR GET THE PHONE NUMERS
while (pCur.moveToNext()) {
// Do something with phones
phoneNumber = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
phoneType = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE));
Log.i("Pratik", name + "'s PHONE :" + phoneNumber);
Log.i("Pratik", "PHONE TYPE :" + phoneType);
}
pCur.close();
}
if (phoneNumber != null && !planetList.contains(new ContactsList(name, phoneNumber))) {
planets = new ContactsList[] { new ContactsList(name, phoneNumber) };
contacts[i] = planets[0];
planetList.addAll(Arrays.asList(planets));
}
phoneNumber = null;
i++;
}
}
// for (int i = 0; i < count; i++)
// {
// Log.d("New Selected Names : ", contacts[i].getName());
// }
}
}
#Override
public void run() {
LoadData();
mHandler.sendEmptyMessage(0);
}
public Handler mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
super.handleMessage(msg);
pd.dismiss();
listAdapter = new PlanetArrayAdapter(BActivtiy.this, planetList);
mainListView.setAdapter(listAdapter);
Adapter adptr;
adptr = mainListView.getAdapter();
}
};
}

Android Search function using a string from an EditText

The Search function in my Android app works. I'm using onSearchRequested(); to invoke the Search function. Now what I'd like to do is not use onSearchRequested(); and pass a string from an EditText to the search method and display the results in a List. Here's my search as it's working when onSearchRequested is called:
SearchPage Activity:
DBHelper = new DBAdapter(this);
DBHelper.open();
Intent intent = getIntent();
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
showResults(query);
}
//--- END onSearchRequested
private void showResults(String query) {
Cursor cursor = DBHelper.searchDB(query);
startManagingCursor(cursor);
String[] searchFrom = new String[] { DBAdapter.KEY_YEAR,
DBAdapter.KEY_MAKE, DBAdapter.KEY_MODEL };
int[] displayHere = new int[] { R.id.rYearTV, R.id.rMakeTV,
R.id.rModelTV };
final SimpleCursorAdapter records = new SimpleCursorAdapter(this,
R.layout.record_2, cursor, searchFrom, displayHere);
setListAdapter(records);
DBAdapter Activity:
//--- GET RECORDS FOR SEARCH
public Cursor searchDB(String query) {
String[] parts = query.split(" ");
String queryString = "";
for(int i = 0; i < parts.length; i++) {
queryString += KEY_YEAR + " LIKE '%" + parts[i] + "%' OR ";
queryString += KEY_MAKE + " LIKE '%" + parts[i] + "%' OR ";
queryString += KEY_MODEL + " LIKE '%" + parts[i] + "%'";
if(i != (parts.length - 1)) {
queryString += " OR ";
}
}
return db.query(true, DB_TABLE,
new String[] { KEY_ROWID, KEY_SDATE, KEY_YEAR, KEY_MAKE, KEY_MODEL },
queryString, null, null, null, null, null);
}
//--- END Get Records for Search
I'd like to pass a String into the search function String searchData = searchEditText.getText().toString(); and have the search function go to work on the passed string by pressing a "Search" button. Can someone help get me started?

You should have EditText like that in your layout:
<EditText
android:id="#+id/search_query"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="search"
android:imeOptions="actionSearch"
android:inputType="text" />
And in your Activity's onCreate:
EditText searchQuery = (EditText) findViewById(R.id.search_query);
searchQuery.setOnEditorActionListener(new OnEditorActionListener() {
public boolean onEditorAction(TextView v, int actionId,
KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_SEARCH) {
String searchData = searchQuery.getText().toString();
showResults(searchData); //passing string to search in your database to your method
return true;
}
return false;
}
});
setOnEditorActionListener is used to perform search when user presses search button on keayboard. You can read more about imeActions here.
According to your code call showResults(searchData); to make search and display results in a list.
EDIT:
According to your code call it in SearchPage Activity:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView and other your features
DBHelper = new DBAdapter(this);
DBHelper.open();
EditText searchQuery = (EditText) findViewById(R.id.search_query);
Button yourButton = (Button) findViewById(R.id.yourButtonId);
yourButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String searchData = searchQuery.getText().toString();
showResults(searchQuery);
}
});
}
private void showResults(String query) {
Cursor cursor = DBHelper.searchDB(query);
startManagingCursor(cursor);
String[] searchFrom = new String[] { DBAdapter.KEY_YEAR,
DBAdapter.KEY_MAKE, DBAdapter.KEY_MODEL };
int[] displayHere = new int[] { R.id.rYearTV, R.id.rMakeTV,
R.id.rModelTV };
final SimpleCursorAdapter records = new SimpleCursorAdapter(this,
R.layout.record_2, cursor, searchFrom, displayHere);
setListAdapter(records);
}

Multiple Contact Picker List [getCheckedItemPositions()]

Below is a my Contact_Picker class. I am going to be using this class to create a list of contacts with checkboxes, giving the user the option to select multiple contacts from their phonebook. I have a layout xml that I am using that has 2 buttons at the bottom: Clear All and Done.
When 'Done' is pressed, I need it to get all of the names that are checked, and save them in a list/preferences file. Right now, I can find what POSITIONS are checked, but I don't know how to retrieve the corresponding information associated with them (the name/phone number of the selected contact). I have searched for days on a method that will work, and have not come up with anything. Any code/pseudo code/ideas are greatly appreciated.
Contact_Picker Class:
public class Contact_Picker extends ListActivity {
protected static final String TAG = null;
public String[] Contacts = {};
public int[] to = {};
public ListView myListView;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contacts_list);
final Button done_Button = (Button) findViewById(R.id.done_Button);
final Button clear_Button =(Button) findViewById(R.id.clear_Button);
Cursor mCursor = getContacts();
startManagingCursor(mCursor);
ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_multiple_choice, mCursor,
Contacts = new String[] {ContactsContract.Contacts.DISPLAY_NAME },
to = new int[] { android.R.id.text1 });
setListAdapter(adapter);
myListView = getListView();
myListView.setItemsCanFocus(false);
myListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
clear_Button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"Selections Cleared", Toast.LENGTH_SHORT).show();
ClearSelections();
}
});
/** When 'Done' Button Pushed: **/
done_Button.setOnClickListener(new View.OnClickListener() {
public void onClick (View v){
Log.i(TAG,":Done Button Selected:");
SparseBooleanArray checkedPositions = myListView.getCheckedItemPositions();
Log.i(TAG,"Number of Checked Positions: " + checkedPositions.size());
if (checkedPositions != null)
{
int count = myListView.getCount();
for ( int i=0;i<count;i++)
{
Log.i(TAG,"Selected items: " + checkedPositions.get(i));
}
}
}
}); //<-- End of Done_Button
} //<-- end of onCreate();
private void ClearSelections() {
int count = this.myListView.getAdapter().getCount();
for (int i = 0; i < count; i++) {
this.myListView.setItemChecked(i, false);
}
}
private Cursor getContacts() {
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME };
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '"
+ ("1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";
return managedQuery(uri, projection, selection, selectionArgs,
sortOrder);
} //<-- end of getContacts();
}
Will Create Output Such As:
Sele02-12 01:25:09.733: INFO/(219): :Done Button Selected:
02-12 01:25:09.743: INFO/(219): Number of Checked Positions: 2
02-12 01:25:09.743: INFO/(219): Selected items: true
02-12 01:25:09.743: INFO/(219): Selected items: false
02-12 01:25:09.743: INFO/(219): Selected items: true
02-12 01:25:09.752: INFO/(219): Selected items: false

see this
public String[] getlistcontacts() {
// TODO Auto-generated method stub
int i=0;
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,null,null, null, null);
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null , null);
int a= cur.getCount();
String[] cttlist=new String[a+1];
cur.moveToFirst();
pCur.moveToFirst();
for (int j=0; j<a;j++){
int nm=cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
//int nb=pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String name=cur.getString(nm);
int nb=pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String number=pCur.getString(nb);
cttlist[i]=name.concat("<;>").concat(number);
//Toast.makeText(PizzastimeActivity.this, "alkamkljziha"+name+":"+number, Toast.LENGTH_LONG).show();
i++;
cur.moveToNext();
pCur.moveToNext();
}
return cttlist;
}
in this code i tried to get list of contact in a table of string then u can use it easily

Here is a correct approach:
SparseBooleanArray selectedPositions = listView.getCheckedItemPositions();
for (int i=0; i<selectedPositions.size(); i++) {
if (selectedPositions.get(selectedPositions.keyAt(i)) == true) {
//do stuff
}
}

maybe you can manually keep track of your contacts:
Vector<String> names=new Vector<String>();
private Cursor getContacts() {...
Cursor cur = managedQuery(uri, projection, selection, selectionArgs,
sortOrder);
int col = cur.getColumnIndex("display_name");
while(cur.moveToNext())
names.add(cur.getString(col));
cur.moveToFirst();
return cur;
}
and then output them synchronously:
for ( int i=0;i<count;i++)
{
Log.i(TAG,"Selected items: " + checkedPositions.get(i));
Log.i(TAG,"Selected name: " + names.get(i));
}

I forgot about this post until Team Pannous left an answer. I'm sure that their method would work, but I ended up using this instead:
SparseBooleanArray checked = myListView.getCheckedItemPositions();
for (int i = 0; i < ContactsList.length; i++) {
Log.v(TAG, ContactsList[i] + ": " + checked.get(i)); //<-- Will print every contact with 'true'
if (checked.get(i) == true) {
Object o = getListAdapter().getItem(i);
String name = o.toString();
WriteSettings(self, name);
}
}
Just in case anyone else is having a problem with a multiple-choice listview.