I am trying to find the max number in a column of one of the tables in my database.
I thought I had this one sorted (I posted similar question previously), however after some testing I have realised my code isn't working as I thought.
The database consists of a table with the following columns:
_id, inspection_link, area_number, area_reference
I have created the following code in my database helper class:
public static final String AREAS_TABLE = "areas";
public static final String AREA_ID = "_id";
public static final String AREA_NUMBER = "area_number";
public static final String AREA_REF = "area_reference";
public static final String AREA_LINK = "area_link";
public static final String INSPECTION_LINK = "inspection_link";
public Cursor selectMaxAreaNumber (long inspectionId) {
String inspectionIdString = String.valueOf(inspectionId);
String[] tableColumns = new String[] {
AREA_NUMBER,
"(SELECT max(" + AREA_NUMBER + ") FROM " + AREAS_TABLE + ") AS max"
};
String whereClause = INSPECTION_LINK + " = ?";
String[] whereArgs = new String[] {
inspectionIdString
};
Cursor c = rmDb.query(AREAS_TABLE, tableColumns, whereClause, whereArgs,
null, null, null);
if (c != null) {
c.moveToFirst();
}
c.close();
return c;
}
Then in the activity where I want to query the database I have written the following:
public class AreaEdit extends Activity {
private EditText AreaNumber;
private EditText AreaReference;
private Button saveButton;
private Button cancelButton;
protected boolean changesMade;
private AlertDialog unsavedChangesDialog;
private RMDbAdapter rmDbHelper;
private long inspectionId;
private long areaId;
private int nextAreaNumber = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
rmDbHelper = new RMDbAdapter(this);
rmDbHelper.open();
Intent i = getIntent();
inspectionId = i.getLongExtra("Intent_InspectionID", -1);
areaId = i.getLongExtra("Intent_AreaID", -1);
if (areaId == -1) {
Cursor c = rmDbHelper.selectMaxAreaNumber(inspectionId);
startManagingCursor(c);
c.moveToFirst();
nextAreaNumber = c.getInt(c.getColumnIndex("max")) + 1;
}
setContentView(R.layout.edit_area);
setUpViews();
populateFields();
setTextChangedListeners();
}
private void setUpViews() {
AreaNumber =(EditText)findViewById(R.id.area_number);
AreaReference =(EditText)findViewById(R.id.area_reference);
saveButton = (Button)findViewById(R.id.area_save_button);
cancelButton = (Button)findViewById(R.id.area_cancel_button);
}
private void populateFields() {
if (areaId > 0) {
Cursor c = rmDbHelper.fetchArea(areaId);
startManagingCursor(c);
c.moveToFirst();
AreaNumber.setText(c.getString(
c.getColumnIndexOrThrow(RMDbAdapter.AREA_NUMBER)));
AreaReference.setText(c.getString(
c.getColumnIndexOrThrow(RMDbAdapter.AREA_REF)));
c.close();
}
else {
AreaNumber.setText(String.valueOf(nextAreaNumber));
}
}
However, when it returns the wrong number - it seems to pick up the maximum number from the whole table which includes data from other inspections.
I guess this may be down to the conversion between Strings and Longs etc maybe, but I have a brickwall with this?
Any help much appreciated.
You can simply try below:
String sql = "SELECT MAX(ColumnNameHere) AS MaxValue FROM myTable WHERE AnotherColumn = 'SomValue'";
Cursor c = db.rawQuery(sql, null);
c.moveToFirst();
c.getInt(c.getColumnIndex("MaxValue"));
Detailed solution to this question found here:
Solution to this detailed in the following post: SELECT statement not returning MAX number
Basically, it was an issue with the query as thought and how I used the cursor.
Related
I'm trying to get certain book data from my Inventory table based on the ISBN.
However, I'm getting an error: "attempt to re-open an already-closed object". The error only occurs when I click a listView object, go to a different screen, go back to this page via "finish()", and then try to click on another listView object. I moved the String searchEntries[] = InventoryAdapter.getInventoryEntriesByISBN(searchQuery, isbn[position]); from the onClickListener to the previous for loop before the onClickListener and now it works.
Why does it not work if I try to getInventoryEntriesByISBN after returning to this activity from another activity via "finish()"?
The error occurs at SearchResultsScreen:
String searchEntries[] = InventoryAdapter.getInventoryEntriesByISBN(searchQuery, isbn[position]);
and by extension, occurs at InventoryAdapter:
Cursor cursor = db.rawQuery(query, new String[] {ISBN});
SearchResultsScreen.java
// Set up search array
for(int i = 0; i < isbn.length; i++)
{
searchArray.add(new InventoryItem(isbn[i], InventoryAdapter.getTitleAndAuthorByISBN(isbn[i])));
}
Toast.makeText(getApplicationContext(), "searchArray.size()="+searchArray.size(), Toast.LENGTH_LONG).show();
// add data in custom adapter
adapter = new CustomAdapter(this, R.layout.list, searchArray);
ListView dataList = (ListView) findViewById(R.id.list);
dataList.setAdapter(adapter);
// On Click ========================================================
dataList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
String searchEntries[] = InventoryAdapter.getInventoryEntriesByISBN(searchQuery, isbn[position]);
InventoryAdapter.java (Most relevant parts)
public String[] getInventoryEntriesByISBN(String search, String ISBN)
{
String[] searchEntry = new String [9];
//Query
String query = "select * from INVENTORY where ISBN = ?";
Cursor cursor = db.rawQuery(query, new String[] {ISBN});
if(cursor.getCount()<1) // title Not Exist
{
cursor.close();
for(int i = 0; i < 9; i++)
searchEntry[i] = "Not Found";
return searchEntry;
}
cursor.moveToFirst();
//put data into respective variable
int publish = cursor.getInt(cursor.getColumnIndex("PUBLISH_DATE"));
String publishdate = ((Integer)publish).toString();
String title = cursor.getString(cursor.getColumnIndex("TITLE"));
String author = cursor.getString(cursor.getColumnIndex("AUTHOR"));
String callNumber = cursor.getString(cursor.getColumnIndex("CALL_NUMBER"));
int available = cursor.getInt(cursor.getColumnIndex("AVAILABLE_COUNT"));
String availablecount = ((Integer)available).toString();
int inventory = cursor.getInt(cursor.getColumnIndex("INVENTORY_COUNT"));
String inventorycount = ((Integer)inventory).toString();
int due = cursor.getInt(cursor.getColumnIndex("DUE_PERIOD"));
String dueperiod = ((Integer)due).toString();
int checkoutcount = cursor.getInt(cursor.getColumnIndex("COUNT"));
String count = ((Integer)checkoutcount).toString();
//combine variables into one array
searchEntry[0] = ISBN;
searchEntry[1] = title;
searchEntry[2] = author;
searchEntry[3] = publishdate;
searchEntry[4] = callNumber;
searchEntry[5] = availablecount;
searchEntry[6] = inventorycount;
searchEntry[7] = dueperiod;
searchEntry[8] = count;
cursor.close();
return searchEntry;
}
public String getTitleAndAuthorByISBN(String ISBN)
{
int entriesFound = getNumSearchEntries(ISBN);
if(entriesFound==0)
entriesFound = 1;
String searchEntry;
//Query
String query = "select * from INVENTORY where ISBN = ?";
Cursor cursor = db.rawQuery(query, new String[] {ISBN});
if(cursor.getCount()<1) // title Not Exist
{
cursor.close();
searchEntry = "Not Found";
return searchEntry;
}
cursor.moveToFirst();
//put data into respective variable
String title = cursor.getString(cursor.getColumnIndex("TITLE"));
String author = cursor.getString(cursor.getColumnIndex("AUTHOR"));
//combine variables into one String
searchEntry = title + " / " + author;
//close cursor and return
cursor.close();
return searchEntry;
}
DataBaseHelper.java
public class DataBaseHelper extends SQLiteOpenHelper
{
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "database.db";
// ============================ End Variables ===========================
public DataBaseHelper(Context context, String name, CursorFactory factory, int version)
{
super(context, name, factory, version);
}
public DataBaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Called when no database exists in disk and the helper class needs
// to create a new one.
#Override
public void onCreate(SQLiteDatabase _db)
{
_db.execSQL(LoginDataBaseAdapter.USER_TABLE_CREATE);
_db.execSQL(CheckOutDataBaseAdapter.CHECKOUT_TABLE_CREATE);
_db.execSQL(InventoryAdapter.INVENTORY_TABLE_CREATE);
_db.execSQL(StatisticsAdapter.STATISTICS_TABLE_CREATE);
}
// Called when there is a database version mismatch meaning that the version
// of the database on disk needs to be upgraded to the current version.
#Override
public void onUpgrade(SQLiteDatabase _db, int _oldVersion, int _newVersion)
{
// Log the version upgrade.
Log.w("TaskDBAdapter", "Upgrading from version " +_oldVersion + " to " +_newVersion + ", which will destroy all old data");
// Upgrade the existing database to conform to the new version. Multiple
// previous versions can be handled by comparing _oldVersion and _newVersion
// values.
// on upgrade drop older tables
_db.execSQL("DROP TABLE IF EXISTS " + LoginDataBaseAdapter.USER_TABLE_CREATE);
_db.execSQL("DROP TABLE IF EXISTS " + CheckOutDataBaseAdapter.CHECKOUT_TABLE_CREATE);
_db.execSQL("DROP TABLE IF EXISTS " + InventoryAdapter.INVENTORY_TABLE_CREATE);
_db.execSQL("DROP TABLE IF EXISTS " + StatisticsAdapter.STATISTICS_TABLE_CREATE);
// Create a new one.
onCreate(_db);
}
}
Check Database Connection before executing query:
if (!dbHelper.db.isOpen())
dbHelper.open();
you can also use cursor.requery(); for again same query.
and in last you have to close the cursor and database also.
cursor.close();
db.close();
Edited:
I have created DBHelper class which extends SQLiteOpenHelper, this class is inner class of DatabaseHelper class and that class have following methods.
/** For OPEN database **/
public synchronized DatabaseHelper open() throws SQLiteException {
dbHelper = new DBHelper(context);
db = dbHelper.getWritableDatabase();
return this;
}
/** For CLOSE database **/
public void close() {
dbHelper.close();
}
If you have still doubt then feel free to ping me. Thank you.
The error only occurs when I click an item, go to a different screen, go back to this page via "finish()", and then try to click on another listView object.
I moved the String searchEntries[] = InventoryAdapter.getInventoryEntriesByISBN(searchQuery, isbn[position]); from the onClickListener to the previous for loop before the onClickListener and now it works.
The correct SearchResultsScreen is below:
SearchResultsScreen.java
// Set up search array
final String Entries[][] = new String[isbn.length][9];
for(int i = 0; i < isbn.length; i++)
{
searchArray.add(new InventoryItem(isbn[i], InventoryAdapter.getTitleAndAuthorByISBN(isbn[i])));
Entries[i] = InventoryAdapter.getInventoryEntriesByISBN(searchQuery, isbn[i]);
}
Toast.makeText(getApplicationContext(), "searchArray.size()="+searchArray.size(), Toast.LENGTH_LONG).show();
// add data in custom adapter
adapter = new CustomAdapter(this, R.layout.list, searchArray);
ListView dataList = (ListView) findViewById(R.id.list);
dataList.setAdapter(adapter);
// On Click ========================================================
dataList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
String searchEntries[] = Entries[position];
This is your problem
if(cursor.getCount()<1) // title Not Exist
{
cursor.close();
for(int i = 0; i < 9; i++)
searchEntry[i] = "Not Found";
return searchEntry;
}
cursor.moveToFirst();
cursor.close();
Change to
for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
{
String title = cursor.getString(cursor.getColumnIndex("TITLE"));
String author = cursor.getString(cursor.getColumnIndex("AUTHOR"));
//combine variables into one String
searchEntry = title + " / " + author;
}
public String[] getInventoryEntriesByISBN(String search, String ISBN)
{
String[] searchEntry = new String [9];
//Query
String query = "select * from INVENTORY where ISBN = ?";
Cursor cursor = db.rawQuery(query, new String[] {ISBN});
Add SQLiteDatabase db = this.getWritableDatabase(); in this code before executing the raw Query
I wonder if someone could show me the error of my ways--I've been struggling with this issue for two days, and realize it must be a fundamental error of initializing variables, but...that reflects the level of my java knowledge.
I'm getting a database result on a delimited string wherein each of the segments has "null" appended to it. It seems that no matter how I change the initialization...well, two days!
I'm declaring the following in the class heading area:
private String strListContent;
private SQLiteDatabase database;
private DatabaseHelper helper2 = new DatabaseHelper(this);
private static final String fields[] = { "_id", "listTitle", "listType",
"listContent", "dateCreated", "dateModified" };
private ArrayList<String> textArray = new ArrayList<String>();
private ArrayList<Integer> imageArray = new ArrayList<Integer>();
Then concatenating my items in
final ImageButton addItem = (ImageButton) findViewById(R.id.btnToAddItem);
addItem.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
itemEdit = (EditText) findViewById(R.id.editTextItem);
if (itemEdit.getText().toString().equals("")) {
showToastMessage("Please enter an item to add...");
} else {
String newListItem = itemEdit.getText().toString();
strListContent += newListItem + "|~|";
...
}}}
I'm using the following bare-bones SQLiteOpenHelper:
public class DatabaseHelper extends SQLiteOpenHelper {
public static final String KEY_ID = "_id";
public DatabaseHelper(Context context) {
super(context, "Cursor", null, 1);
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE IF NOT EXISTS list_data ("
+ KEY_ID
+ " INTEGER PRIMARY KEY AUTOINCREMENT, listTitle TEXT, listType TEXT, listContent TEXT, dateCreated TEXT, dateModified TEXT)");
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Steps to upgrade the database for the new version ...
}
}
To insert the values as so:
ImageButton saveAndBack = (ImageButton) findViewById(R.id.btnSaveBack);
saveAndBack.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String title = null;
String listContent = null;
Calendar javaCalendar = null;
title = titleEdit.getText().toString();
title = (title=="" || title==null)?"Untitled List":title;
strListContent = (strListContent=="" || strListContent==null)?"No Items|~|":strListContent;
listContent = strListContent;
String type = "R"; //"Regular List"
javaCalendar = Calendar.getInstance();
String currentDate = javaCalendar.get(Calendar.MONTH) + "/" + (javaCalendar.get(Calendar.DATE) + 1) + "/" + javaCalendar.get(Calendar.YEAR);
database = helper2.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("listTitle", title);
values.put("listType", type);
values.put("listContent", listContent);
values.put("dateCreated", currentDate);
values.put("dateModified", currentDate);
database.insert("list_data", null, values);
Intent i = new Intent(RegularList.this, ActivityMain.class);
startActivity(i);
}
});
}
//
//End of OnCreate(){}
//
Then, when I retrieve from another activity:
DatabaseHelper helper = new DatabaseHelper(this);
database = helper.getWritableDatabase();
Cursor data = database.query("list_data", fields, null, null, null,
null, null);
Integer tindex = data.getColumnIndex("listTitle");
Integer iindex = data.getColumnIndex("listType");
Integer cindex = data.getColumnIndex("listContent");
itemCount = 0;
for (data.moveToFirst(); !data.isAfterLast(); data.moveToNext()) {
showToastMessage(data.getString(cindex));
titleArrayList.add(data.getString(tindex));
if (data.getString(iindex) == "R") {
imageArrayList.add(R.drawable.listview_regular);
} else if (data.getString(iindex) == "L") {
imageArrayList.add(R.drawable.listview_location);
} else {
imageArrayList.add(R.drawable.listview_regular);
}
itemCount++;
}
data.close();
...
I can see in the toast message that each item from the delimited string has "null" appended to the front of it...the other values are fine. I hope this hasn't been too verbose, but...any recommendations? Thanks!
To me it looks like you may have simply not initialised the String strListContent before you first append to it with:
strListContent += newListItem + "|~|";
When you do that, you'll get a "null" prefixed in front of the value you are trying to append, just as you observe.
Perhaps you can just initialise in the declaration:
private String strListContent = "";
I am trying, unsucessfully, to query my database to find the maximum 'area number', in my areas table for a certain inspection, so that I can set the text in a form to the next area number.
The database table consists of four columns; _id, inpsection_link, area_number, area-reference.
I have created the following in my database helper class (using this post as a guide: SQLiteDatabase.query method):
public int selectMaxAreaNumber (long inspectionId) {
String inspectionIdString = String.valueOf(inspectionId);
String[] tableColumns = new String[] {
AREA_NUMBER,
"(SELECT max(" + AREA_NUMBER + ") FROM " + AREAS_TABLE + ") AS max"
};
String whereClause = INSPECTION_LINK + " = ?";
String[] whereArgs = new String[] {
inspectionIdString
};
Cursor c = rmDb.query(AREAS_TABLE, tableColumns, whereClause, whereArgs,
null, null, null);
int maxAreaNumber = c.getColumnIndex("max");
return maxAreaNumber;
}
Which I then call in the areaEdit class as follows:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
rmDbHelper = new RMDbAdapter(this);
rmDbHelper.open();
Intent i = getIntent();
inspectionId = i.getLongExtra("Intent_InspectionID", -1);
areaId = i.getLongExtra("Intent_AreaID", -1);
if (areaId == -1) {
nextAreaNumber = rmDbHelper.selectMaxAreaNumber(inspectionId) + 1;
Toast.makeText(getApplicationContext(), String.valueOf(nextAreaNumber),
Toast.LENGTH_LONG).show();
}
setContentView(R.layout.edit_area);
setUpViews();
populateFields();
setTextChangedListeners();
}
However, it just returns 1 everytime (even if there are numbers higher than that stored in the database).
Confused.com!! Any help much appreciated.
Your issue is here :
int maxAreaNumber = c.getColumnIndex("max");
You're getting the column index of max, which is 1 because you only have one column in your query.
Instead, do something like this :
int maxAreaNumber = 0;
if(c.moveToFirst())
{
maxAreaNumber = c.getInt(1);
// or cleaner
maxAreaNumber = c.getInt(c.getColumnIndex("max"));
}
else
// no data in cursor
I have a SQLite Database with 45 different entries, each with:
public static final String TABLE = "Table";
public static final String COLUMN_ID = "_id";
public static final String COLUMN_HOUR = "hour";
public static final String COLUMN_WEEK = "week";
public static final String COLUMN_DAY = "day";
public static final String COLUMN_NAME = "name";
public static final String COLUMN_DESCRIPTION = "description";
public static final String COLUMN_COLOUR = "colour";
public static final String COLUMN_ROOM = "room";
now I want to read out all. I Do this with following:
public Cursor fetchAllSubject(){
Cursor mCursor = database.query(true, TABLE, new String[] {
COLUMN_ID, COLUMN_HOUR, COLUMN_WEEK, COLUMN_DAY, COLUMN_NAME, COLUMN_DESCRIPTION, COLUMN_COLOUR, COLUMN_ROOM},null
, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
In a other class I have this code to read all out:
dao = new DAO(this);
Cursor subjectList = dao.fetchAllSubject();
Now I want to have for each entry an array with ID, Hour, week, ... but I have no idea how to do that.
My first try was following:
ArrayList<String> mo1h = new ArrayList<String>();
subjectList.moveToFirst();
while(!subjectList.isAfterLast()) {
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_ID)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_HOUR)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_WEEK)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_DAY)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_NAME)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_DESCRIPTION)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_COLOUR)));
mo1h.add(subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_ROOM)));
subjectList.moveToNext();
}
But everything is in mo1h, and I dont know how to devide it.
The best would be to have a String[] for each. Has anybody an Idea?
Thanks!
You can create on Bean class and then create one ArrayList (Collection class)
public class Bean
{
public Bean();
String id, hour, week, day, name, description, color, room;
}
now create list of Bean
ArrayList<Bean> mo1h = new ArrayList<Bean>();
subjectList.moveToFirst();
while(!subjectList.isAfterLast()) {
Bean b = new Bean();
b.id = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_ID));
b.hour =subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_HOUR));
...
...
// all your column
mo1h.add(b);
}
Why not continue with your strategy, but instead use an ArrayList of String[]:
ArrayList<String[]> mo1h = new ArrayList<String[]>();
subjectList.moveToFirst();
while(!subjectList.isAfterLast()) {
String[] toUse = new String[8];
toUse[0] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_ID));
toUse[1] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_HOUR));
toUse[2] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_WEEK));
toUse[3] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_DAY));
toUse[4] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_NAME));
toUse[5] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_DESCRIPTION));
toUse[6] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_COLOUR));
toUse[7] = subjectList.getString(subjectList.getColumnIndex(dao.COLUMN_ROOM));
mo1h.add(toUse);
subjectList.moveToNext();
}
I am looking for a way to get the contacts in the favorites list inside service from phone number or from name it dose not matter. Can any one help me with this?
It's not important to use any code related to this code
I found in the developer.android.com something like this (IN_VISIBLE_GROUP).
How to use this variable in my case?
case (PICK_CONTACT):
if (resultCode == Activity.RESULT_OK) {
Uri contactData = data.getData();
Cursor c = managedQuery(contactData, null, null, null, null);
ContentResolver cr = getContentResolver();
if (c.moveToFirst()) {
String name = c.getString(c.getColumnIndexOrThrow(People.NAME));
String id =c.getString(c.getColumnIndexOrThrow(People._ID));
Cursor phones = cr.query(Phone.CONTENT_URI, null,
Phone.CONTACT_ID + " = " + id, null, null);
}
Lets assume that you are searching a contact by name..
If you want to get Favourite value of all the possible contacts , drop the selection parameter in the given code.
//First get the contact ID from a display name as:-
String displayName = "Albert Einstein";
Uri contacts = ContactsContract.Contacts.CONTENT_URI;
cur = cr.query(contacts, null, ContactsContract.Contacts.DISPLAY_NAME +"="+displayName,null, null);
int contactIdIndex = cur.getColumnIndex(ContactsContract.PhoneLookup._ID);
int contactId = cur.getInt(contactIdIndex);
//Make a query to get the Starred value:-
Cursor starred = cr.query(ContactsContract.Contacts.CONTENT_URI,
new String[] { ContactsContract.Contacts.STARRED },
ContactsContract.Contacts._ID + " = " + contactId,
null, null);
if (starred != null && starred.moveToFirst())
{
int fav = starred.getInt(0);
}
if (starred != null)
starred.close();
}
You can drop the step of getting Contact ID and then querying for Starred value and directly query based on Display name
Something like this?
final private static class DataQuery {
public static final int COLUMN_MIMETYPE = 1;
public static final int COLUMN_PHONE = 2;
public static final int COLUMN_RAWCONTACT_ID = 3;
public static final int COLUMN_PHONE_NUMBER = COLUMN_DATA1;
public static final String[] PROJECTION = new String[] { Data._ID, Data.MIMETYPE, Data.DATA1, Data.RAW_CONTACT_ID };
public static final String SELECTION_PHONE = Data.DATA1 + "=?";
}
long findContact(Context context, String number) {
long rawContactId = -1;
final Cursor cursor = context.getContentResolver().query(Data.CONTENT_URI, DataQuery.PROJECTION, DataQuery.SELECTION_PHONE, new String[] { number }, null);
try {
if (cursor.moveToFirst()) {
rawContactId = cursor.getLong(DataQuery.COLUMN_RAWCONTACT_ID);
}
} finally {
if (cursor != null)
cursor.close();
}
return rawContactId;
}
Ok let's try with this...
private static final Uri DATAGROUP_CONTENT_URI = ContactsContract.Data.CONTENT_URI.buildUpon().appendQueryParameter(Data.MIMETYPE, GroupMembership.CONTENT_ITEM_TYPE).build();
public static void querytGroups(Context context) {
final ContentResolver resolver = context.getContentResolver();
long groupid=getGroupId(resolver, "Family");
final Cursor c = resolver.query(DATAGROUP_CONTENT_URI, DataQueryForContactsInGroup.PROJECTION, DataQueryForContactsInGroup.SELECTION, new String[] {ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE, String.valueOf(groupid)}, null);
try {
while (c.moveToNext()) {
final long rawContactId = c.getLong(DataQueryForContactsInGroup.RAW_CONTACT_ID);
//do something
}
}finally {
c.close();
}
}
private static long getGroupId(final ContentResolver resolver, String groupName) {
long groupid = -1;
Cursor cur = null;
try {
cur = resolver.query(Groups.CONTENT_URI, DataQueryForGroup.PROJECTION, DataQueryForGroup.SELECTION, new String[]{"%"+groupName+"%"}, null);
while (cur.moveToNext()) {
return groupid= cur.getLong(DataQueryForGroup.GROUP_ID);
}
}finally {
if (cur!=null) cur.close();
}
return groupid;
}
private interface DataQueryForGroup {
public final static String[] PROJECTION = new String[] {Groups._ID};
public static final String SELECTION = Groups.TITLE+" LIKE ?";
public final static int GROUP_ID = 0;
}
private interface DataQueryForContactsInGroup {
public final static String[] PROJECTION = new String[] { Data.RAW_CONTACT_ID };
public static final String SELECTION = "("+Data.MIMETYPE + "=?) and ("+ ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID+ "=?)";
public final static int RAW_CONTACT_ID = 0;
}
Please consider that if your google account is not English you need to look for the proper group's name