I'm trying to delete all contacts by a determinated group.
I've created the group with GROUP_ROW_ID = 987
So I should delete contacts with GROUP_ROW_ID = 987!
I don’t know how to delete them.
Can anyone help me?
If you haven't solved it yet this is how I do it. By no means do I suggest this is an effective solution. This is just the straight forward solution.
First find all contact-ids having a specific group id. Then creating a ContentProviderOperation for each contact to be deleted, and last apply the list of delete operations.
private void deletaAllInGroup(Context context, long groupId)
throws RemoteException, OperationApplicationException{
String where = String.format("%s = ?", GroupMembership.GROUP_ROW_ID);
String[] whereParmas = new String[] {Long.toString(groupId)};
String[] colSelection = new String[] {Data.CONTACT_ID};
Cursor cursor = context.getContentResolver().query(
Data.CONTENT_URI,
colSelection,
where,
whereParmas,
null);
ArrayList<ContentProviderOperation> operations =
new ArrayList<ContentProviderOperation>();
// iterate over all contacts having groupId
// and add them to the list to be deleted
while(cursor.moveToNext()){
String where = String.format("%s = ?", RawContacts.CONTACT_ID);
String[] whereParams = new String[]{Long.toString(cursor.getLong(0))};
operations.add(ContentProviderOperation.newDelete(RawContacts.CONTENT_URI)
.withSelection(where, whereParams)
.build());
}
context.getContentResolver().applyBatch(
ContactsContract.AUTHORITY, operations );
}
Deleting a record
To delete a single record, call {ContentResolver.delete() with the URI of a specific row.
To delete multiple rows, call ContentResolver.delete() with the URI of the type of record to delete (for example, android.provider.Contacts.People.CONTENT_URI) and an SQL WHERE clause defining which rows to delete. (Caution: Be sure to include a valid WHERE clause if you're deleting a general type, or you risk deleting more records than you intended!).
Be careful with deleting Contacts! Deleting an aggregate contact deletes all constituent raw contacts. The corresponding sync adapters will notice the deletions of their respective raw contacts and remove them from their back end storage.
Specify READ_CONTACTS and WRITE_CONTACTS permissions in your AndroidManifest.xml.
Iterate through each contact and delete each record: Content Providers
Contacts
private final String MY_QUERY = "SELECT * FROM table_a a INNER JOIN table_b b ON a.id=b.other_id WHERE b.property_id=?";
db.rawQuery(MY_QUERY, new String[]{String.valueOf(propertyId)});
rawQuery
another example where I join two tables in one query
private static final String JOIN_QUERY=
"SELECT * FROM Employee JOIN User ON userId = employeeUserId";
Related
I don't know what's wrong with my code I follow the rule but I get wrong result. I want to search db and find all rows data but I only get last row from sqlite. my code to search database is bellow:
public ArrayList<ArrayList<ContractSaveDataFromDB>> ActiveContractData(String phone, String numberId)
{
ArrayList<ContractSaveDataFromDB> UserData = new ArrayList<ContractSaveDataFromDB>();
ArrayList<ArrayList<ContractSaveDataFromDB>> SendUserData =
new ArrayList<ArrayList<ContractSaveDataFromDB>>();
SQLiteDatabase db = this.getReadableDatabase();
String whereClause = "phone = ? AND numberId = ?";
String[] whereArgs = new String[]{
phone,
numberId
};
String orderBy = "activeContract";
Cursor res2=db.query("usersAccount",null,whereClause,whereArgs,null,null,orderBy);
res2.moveToFirst();
do{
UserData.clear();
int index;
ContractSaveDataFromDB contractSaveDataFromDB=new ContractSaveDataFromDB();
index = res2.getColumnIndex("buyAmount");
String buyAmount = res2.getString(index);
contractSaveDataFromDB.setBuyAmount(buyAmount);
UserData.add(contractSaveDataFromDB);
SendUserData.add(UserData);
} while(res2.moveToNext());
res2.close();
db.close();
return SendUserData;
I don't know what's wrong. I appreciate if you help me to solve my problem.
you already added where clause so maybe it is filtering your results try to remove it by change this
Cursor res2=db.query("usersAccount",null,whereClause,whereArgs,null,null,orderBy);
to this
Cursor res2=db.query("usersAccount",null,null,null,null,null,orderBy);
I believe that your issues is that you are trying to use an ArrayList of ArrayList of ContractSaveDataFromDB objects.
I believe that an ArrayList of ContractSaveDataFromDB objects would suffice.
It would also help you if you learnt to do a bit of basic debugging, as an issue could be that you are not extracting multiple rows.
The following is an alternative method that :-
uses the ArrayList of ContractSaveDataFromDB objects,
introduces some debugging by the way of writing some potentially useful information to the log
and is more sound, as it will not crash if no rows are extracted
i.e. if you use moveToFirst and don't check the result (false means the move could not be accomplished) then you would get an error because you are trying to read row -1 (before the first row) as no rows exists in the cursor.
:-
public ArrayList<ContractSaveDataFromDB> ActiveContractData(String phone, String numberId) {
ArrayList<ContractSaveDataFromDB> SendUserData = new ArrayList<ContractSaveDataFromDB>();
SQLiteDatabase db = this.getReadableDatabase();
String whereClause = "phone = ? AND numberId = ?";
String[] whereArgs = new String[]{
phone,
numberId
};
String orderBy = "activeContract";
Cursor res2 = db.query("usersAccount", null, whereClause, whereArgs, null, null, orderBy);
Log.d("RES2 COUNT", "Number of rows in Res2 Cursor is " + String.valueOf(res2.getCount()));
while (res2.moveToNext()) {
ContractSaveDataFromDB current_user_data = new ContractSaveDataFromDB();
current_user_data.setBuyAmount(res2.getString(res2.getColumnIndex("buyAmount")));
Log.d("NEWROW", "Adding data from row " + String.valueOf(res2.getPosition()));
SendUserData.add(current_user_data);
}
res2.close();
db.close();
Log.d("EXTRACTED", "The number of rows from which data was extracted was " + String.valueOf(SendUserData.size()));
return SendUserData;
}
If after running you check the log you should see :-
A line detailing how many rows were extracted from the table
A line for each row (if any were extracted) saying Adding data from row ? (where ? will be the row 0 being the first)
A line saying The number of rows from which data was extracted was ? (? will be the number of elements in the array to be returned)
I have an SQLite Database in my application. It has three columns. being _id, TEXT, and Location. If I want to return all the data from, say, the TEXT column should I use cursor.getColumnIndex(2)? I am obviously new to SQLite. And and all help is appreciated. Thanks everyone!
Yes, friend, you are new.
First off, your database doesn't have three columns, but rather, your table does. Databases have tables, tables of columns (fields) and rows (records).
Secondly, TEXT is not a valid name for a column, as it's a datatype. Let's say you called the three columns id, theText, and location -- then if you selected all three columns to be returned, the second one would be accessible through:
cursor.getString(1); // that's the second column returned
or
cursor.getString(cursor.getColumnIndex( "theText" ) );
However, you can have sqlite do most of the work for you by selecting only the column you're interested in, so then you'd cursor.getString(0) as it's the only column returned.
For more pertinent explanations, please post your code in the question.
simply apply the query of getting all contacts and take an array of string type and then add the required record in that array as shown below
I hope this code help u
in DBHelper getting record of particular column :
public ArrayList<String> getAllCotactsEmail() {
ArrayList<String> arrayList=new ArrayList<>();
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery( "select * from contacts", null );
res.moveToFirst();
if (res != null)
{
while(res.isAfterLast() == false){
arrayList.add(res.getString(res.getColumnIndex(CONTACTS_COLUMN_EMAIL)));
Log.d("emailssinlisttt",arrayList.toString());
res.moveToNext();
}}
return arrayList;
}
retrieve :
email=mydb.getAllCotactsEmail();
Log.d("emaillllll",email.toString());
You need to query your Database to get your data. This query will return a Cursor with the column you specified in the query.
To make query, you need to call query() method from ContentResolver. To get your ContentResolver, you can use getContentResolver() from a Context like Activity :
getContentResolver.query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder);
To understand all parameters, see : ContentResolver
In your case, you want only TEXT column so pass a String array with your TEXT column name for projection parameters.
You want all rows so your selection and selectionArgs parameters must be null.
If you don't care about order, pass null for sortOrder (rows will be sort by ID) :
Cursor c = getContentResolver.query(yourUri, new String[]{"TEXT"}, null, null, null)
This query will return a cursor, to extract your values from the cursor, make a loop like :
if(c.moveToFirst()) {
do {
final String text = c.getString(c.getColumnIndex("TEXT"));
} while (c.moveToNext());
}
Hope this will help you :)
I'm trying to get "notes" from a single contact. It added fine but retrieving it has been a problem.
String selection = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME+" like'%" + sender +"%'";
String[] projection = new String[] { ContactsContract.CommonDataKinds.Note.NOTE};
Cursor c2 = getContentResolver().query(ContactsContract.Data.CONTENT_URI, projection, selection, null, null);
if (c2.moveToFirst()) {
notes = c2.getString(0);
}
It works fine with other values like name or phone number but can't seem to get notes to retrieve correctly. It retrieves a random value like email instead.
I believe that your problem is that not all rows in the table represent contact types that have notes. You have to request the proper MIME Type.
ContactsContract.CommonDataKinds.Note is an alias for the 'data1' column that is present on all rows, so when you get a row of a different MIME Type, it represents different data.
How to get contacts in Android should give you an idea of how to do this.
I query the CallLog.Calls provider in order to retrieve a list of calls from a certain contact, based on the contact's display name. In particular, I use this query:
String selection = CallLog.Calls.CACHED_NAME + "= ?";
String dispName = dataCollector.getDisplayName();
Cursor callCursor =
cr.query(callLogUri, callLogProjection, selection,
new String[] {dispName},CallLog.Calls.DATE + " DESC");
The dataCollector object is used to hold information from queries based on a given contact id.
The problem is that this code only returns one call for the given contact. I can't understand why. Any clues?
int i=0;
while(cursor.moveToNext())
{
Sring id = cursor.getString(cursor.getColumnIndex(CallLog.Calls._ID));
numbersTemp[i]=cursor.getString(cursor.getColumnIndex(CallLog.Calls.NUMBER));
valuesTemp[i]=cursor.getString(cursor.getColumnIndex(CallLog.Calls.CACHED_NAME));
i++;
}
I'm working on Android contact. I want to query phone numbers (not contact name) from a specific group name. What query should i perform in order to do this?
Cursor c = context.getContentResolver().query(ContactsContract.Data.CONTENT_URI
, null, ContactsContract.Data.MIMETYPE+"=?"
, new String[]{ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE}
, null);
Then loop through cursor and get data u want. This will return data blocks showing the contactID and the groupID and other info. With this then query ContactsContract.Groups and get data about the group to compare.
If you are looking for specific data about a group first query for group row ID than you can add that to the following cursor like so...
Cursor c = context.getContentResolver().query(ContactsContract.Data.CONTENT_URI
, null, ContactsContract.Data.MIMETYPE+"=? AND "+ ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID+"=?"
, new String[]{ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE, rowID }
, null);
wrote code here so sorry for silly mistakes
You can find group id like so...
Cursor c = context.getContentResolver().query(ContactsContract.Groups.CONTENT_URI, new String[]{ContactsContract.Groups._ID}, ContactsContract.Groups.TITLE+"=?","myGroup", null);