I try to change status for one of attendees for specific Event.
The following example demonstrates how to update event title:
ContentResolver cr = context.getContentResolver();
ContentValues values = new ContentValues();
values.put(Events.TITLE, "Some new title");
String selectedEventId = "123";
String[] selArgs = new String[]{selectedEventId};
int updated = cr.update(
Events.CONTENT_URI,
values,
Events._ID + " =? ",
selArgs);
But I need update information for specific attendee. SO I need somehow to change Where part of query.
Right now I have Events._ID + " =? that mean where eventID=123
and this line will set new type:
values.put(Attendees.ATTENDEE_STATUS, "1"); // 1 - ACCEPTED
How to write where statement to update specific attendee with email (lets say) aaa.bbb#gmail.com
[EDIT]
I tried:
String selectedEventId = eventStructure.getString("mEventId");
String selectedEmail = "aaa.bbb#gmail.com";
String[] selArgs = new String[]{selectedEventId, selectedEmail};
int updated =
cr.
update(
Events.CONTENT_URI,
values,
Events._ID + " =? AND " + Attendees.ATTENDEE_EMAIL + " =?",
selArgs);
but get Exception:
android.database.sqlite.SQLiteException: no such column: attendeeEmail (code 1): ,
while compiling: SELECT * FROM Events WHERE _id =? AND attendeeEmail =?
Thank you for help,
Since you want to update attendee information you need to change Uri from Events.CONTENT_URI to Attendees.CONTENT_URI.
In addition instead Events._ID write Attendees.CONTENT_URI.
So the snippets of code should be something like:
values.put(Attendees.ATTENDEE_STATUS, "1");
String selectedEventId = eventStructure.getString("mEventId");
String selectedEmail = "aaa.bbb#gmail.com";
String[] selArgs = new String[]{selectedEventId, selectedEmail};
int updated = cr.update(
Attendees.CONTENT_URI,
values,
Attendees.EVENT_ID + " =? AND " + Attendees.ATTENDEE_EMAIL + " =?",
selArgs);
Log.d(TAG, "sendAcceptEvent :: updated row count: "+ updated);
Didn't test it, but should work
Related
public void DBSearchCategory(String tableName) {
// 1st way
String inClause = s1.ListViewCategory.toString();
inClause = inClause.replace("[", "(");
inClause = inClause.replace("]", ")");
// Cursor cursor = database.rawQuery("SELECT CATEGORY FROM " + tableName
// + " WHERE CATEGORY NOT IN " + inClause
// + " ORDER BY RANDOM() LIMIT 1 ", null);
// 2nd way
try {
StringBuilder sb = new StringBuilder("");
for (String param : s1.ListViewCategory) {
sb.append(",").append('"').append(param).append('"');
}
params = sb.toString().substring(1);
Log.v("Tag", "params value is " + params);
} catch (StringIndexOutOfBoundsException e) {
}
Cursor cursor = database.rawQuery("SELECT CATEGORY FROM " + tableName
+ " WHERE CATEGORY NOT IN (?) "
+ " ORDER BY RANDOM() LIMIT 1 ", new String[]{params});
while (cursor.moveToNext()) {
category = cursor.getString(cursor.getColumnIndex("CATEGORY"));
s1.keyCategory = category;
}
cursor.close();
}
s1.ListViewCategory is a String type ArrayList in Singleton class s1, and it has values of categories: "game","country","city","subway","actor","pet" // In Database there are total 33 categories, and I want to exclude these 6 categories that are in s1.ListViewCategory
In rawQuery, I want to exclude categories that are in s1.ListViewCategory, so I tried 2 ways of cursor refering to these 2 stackoverflow questions:
Android - sqlite in clause using string values from array?
///Android - sqlite in clause using values from array
I used WHERE and NOT IN statement to exclude these 6 categories
When I tried 2nd way cursor, I got no error. However, the Sql query did not work. It had to exclude categories that are in String[params], but it did not work. So I used log to see what param is and I got this
2020-01-09 09:16:47.233 8978-8978/com.kj.word V/Tag: params value is
"game","country","city","subway","actor","pet"
When I tried 1st Cursor Category, I got error logcat:
Error Code : 1 (SQLITE_ERROR)
Caused By : SQL(query) error or missing database.
(no such column: game (code 1): , while compiling: SELECT CATEGORY FROM KeyWordDB WHERE CATEGORY
NOT IN (game, country, city, subway, actor, pet) ORDER BY RANDOM() LIMIT 1)
#################################################################
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1008)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:573)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:59)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLite
I confirmed that there is a database, so I guess it is probably sql query problem ...
So my question is How can I fix 1st or 2nd cursor to exclude categories that are in s1.ListViewCateogry?
I've searched real hard, but I wasn't able to find answer... Ill be real grateful, if someone answers this question
Change the double quotes with single quotes inside the loop that constructs the comma delimited list:
for (String param : s1.ListViewCategory) {
sb.append(",").append("'").append(param).append("'");
}
params = sb.toString().substring(1);
This code constructs a list like:
'game', 'country', 'city', 'subway', 'actor', 'pet'
If you use it as a parameter in the rawQuery() method then this list will be treated as a string literal and not a list of values.
So do this instead:
String sql = "SELECT CATEGORY FROM " + tableName
+ " WHERE CATEGORY NOT IN (?) "
+ " ORDER BY RANDOM() LIMIT 1 ";
sql = sql.replace("?", params);
Cursor cursor = database.rawQuery(sql, null);
Note that this method is prone to sql injection.
Another way is to create a list of ? placeholders instead of 1 placeholder and pass the list of values as an array of strings like this:
for (String param : s1.ListViewCategory) {
sb.append(",?");
}
String[] array = ListViewCategory.toArray(new String[s1.ListViewCategory.size()]);
params = sb.toString().substring(1);
String sql = "SELECT CATEGORY FROM " + tableName
+ " WHERE CATEGORY NOT IN (#) "
+ " ORDER BY RANDOM() LIMIT 1 ";
sql = sql.replace("#", params);
Cursor cursor = database.rawQuery(sql, array);
I want to change a single column inside a row. I'm trying to update the value inside "remindOnDate" field to "reminder" in the "tasks" table.
I tried a few things but they all work only when remindOnDate is null. Once it has a value stored in it, update won't work on it. I don't know why. What am I doing wrong? If the statement is wrong then it shouldn't work even when remindOnDate is null.
I tried this:
ContentValues editTask = new ContentValues();
editTask.put("remindOnDate", reminder);
database.update("tasks", editTask, "_id = ?", new String[]{id+""});
I also tried the following instead of the last line:
database.update("tasks", editTask, "_id = " + id, null);
Here is another thing I tried:
String createQuery = "UPDATE tasks SET remindOnDate = '" + reminder + "' WHERE _id = " + id + ";";
database.execSQL(createQuery);
Hello I am using a sqlite database in my android application, and I have question:
I am trying to get the last value text(thats the collumn) from the last row from the table TABLE_XYZ... but it does not work.. i am using the following code...what am I doing wrong?
another question is, how can I return two values instead of only one, when I want to get several values from the last row like column text and message?
private static final String KEY_MESSAGE = "message";
private static final String KEY_TEXT = "text";
...
String selectQuery= "SELECT * FROM " + TABLE_XYZ+" ORDER BY column DESC LIMIT 1";
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
cursor.close();
return cursor.getString( cursor.getColumnIndex(KEY_TEXT) );
EDIT:
i hade some errors in my Query,, i fixed it, but still have errors:
String selectQuery= "SELECT * FROM " + TABLE_XYZ + " ORDER BY " + KEY_TEXT+ " DESC LIMIT 1";
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
String str = cursor.getString( cursor.getColumnIndex(KEY_TEXT );
cursor.close();
return str;
while debugging I can see that cursor does have the right values inside... but when i try to get the column value with this command "cursor.getString( cursor.getColumnIndex(KEY_TEXT );"... it does not work...
you are closing cursor before getting it's value
try this :
String selectQuery= "SELECT * FROM " + TABLE_XYZ+" ORDER BY column DESC LIMIT 1";
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
String str = "";
if(cursor.moveToFirst())
str = cursor.getString( cursor.getColumnIndex(KEY_TEXT) );
cursor.close();
return str;
From the android documentation: http://developer.android.com/reference/android/database/Cursor.html
abstract void close()
Closes the Cursor, releasing all of its resources and making it completely invalid.
You are closing the cursor before returningthe string.
Like #whatever5599451 said you should not close the cursor before you get value. Also try a query like this:
String selectQuery = "SELECT column FROM " + TABLE_XYZ +
" ORDER BY column DESC LIMIT 1";
You can specify the columns also specify to return only 1 row.
This will bring back only the column you are ordering by you can also specify more columns example:
String selectQuery = "SELECT column, column2, column3 FROM " + TABLE_XYZ +
" ORDER BY column DESC LIMIT 1";
* means select all columns
to get the last column, use the name of the column instead of " * " (* means all, all the fields)
#Steve: do this:
String selectQuery= "SELECT " + KEY_TEXT + " FROM " + TABLE_XYZ + " ORDER BY " + KEY_TEXT+ " DESC LIMIT 1";
then you get just one String with the last record containing just the right column
I have two tables; a 'parent' and a 'child' table. (not SQLite defitinions, just something i call them)
Everytime a child-object is created, it is assigned the value 0 in one of its columns.
When a new parent-object is created, every unassigned child-object, has to update the value mentioned before, to the parent-object's ID. My code looks like this:
public long createWorkout(String workoutName){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, workoutName);
//Creates a new parent-object (a workout - the childs are exercises)
//the generated ID is returned as a long (workout_pk_id)
long workout_pk_id = db.insert(TABLE_WORKOUT, null, values);
//Selects all objects in the child-table with KEY_WORKOUT_ID = 0 (the column mentioned before)
String selectQuery = "SELECT * FROM " + TABLE_EXERCISE + " WHERE " + KEY_WORKOUT_ID + " == " + 0;
Cursor cursor = db.rawQuery(selectQuery, null);
//Takes each found object with value 0, and updates the value to the returned parent-ID from before.
if (cursor.moveToFirst()) {
do {
String k = "UPDATE " + TABLE_EXERCISE + " SET " + KEY_WORKOUT_ID + " == " + workout_pk_id;
db.execSQL(k);
} while (cursor.moveToNext());
}
return workout_pk_id;
}
But for some reason this doesn't work. The ID the childs/exercises remains 0. Can you help me?
I don't know if the error is somewhere in the setup of my tables, in that case i could provide some more information.
Thanks in advance. /Jeppe
EDIT: This is used in android, and I have debugged and verified that the workout_pk_id is returned, 45 objects are found in the selectQuery and yet it doesn't work. I also tried ContentValues to update the values, didn't work.
Edited the " == " to " = ", but the value is still not updated.
This is from eclipse - I've created a workout called "test", with the ID 160.
The exercise "test1" has the ID 430 (unique) but the workout_id is still 0.
It's been awhile since I did any Android stuff but I believe the "==" operator is incorrect:
String k = "UPDATE " + TABLE_EXERCISE + " SET " + KEY_WORKOUT_ID + " == " + workout_pk_id;
The operator you're using is a comparative operator, "=" is the assignment operator.
I also believe there is a better way to do what you are trying to do, currently refreshing my memory on Android so I'll get back to you. In the meantime tell me if replacing the operator works
Yeah so another way you can do this is by using subqueries. So it would look something like:
UPDATE TABLE_EXCERCISE SET KEY_WORKOUT_ID = WORKOUT_PK_ID WHERE KEY_WORKOUT_ID =
(
*subquery here to select parent object ids*
)
Here's a link to help:
http://www.tutorialspoint.com/sqlite/sqlite_sub_queries.htm
Let me know how this works for you.
I think you have to look to your update query.
It has to be:
String k = "UPDATE " + TABLE_EXERCISE + " SET " + KEY_WORKOUT_ID + " = " + workout_pk_id;
Look at the "=" between KEY_WORKOUT_ID and workout_pk_id.
I'm having kind of a problem here, since I just startet developing for Android. I downloaded the sample from the official Android website "http://developer.android.com/training/contacts-provider/retrieve-names.html", which is basically capable of retrieving an showing all the contacts from the phone. The feature I wanted to add is to just show contacts from a certain group like "Friends" (hardcoded).
As far as I narrowed it down I have to change the selection part
final static String SELECTION =
(Utils.hasHoneycomb() ? Contacts.DISPLAY_NAME_PRIMARY : Contacts.DISPLAY_NAME) +
"<>''" + " AND " + Contacts.IN_VISIBLE_GROUP + "=1";
to something like this
final static String SELECTION =
Contacts.GroupID = "Friends";
which gives me errors, because it can't find the column.
I'm very eager to explore the potential of Android, but that one is giving me headache.
There two ways for getting list of contacts of a group. First, I suppose you have GroupId and want to get related list of contacts.
String[] projection = {
ContactsContract.Groups._ID,
ContactsContract.Groups.TITLE,
ContactsContract.Groups.ACCOUNT_NAME,
ContactsContract.Groups.ACCOUNT_TYPE
};
return context.getContentResolver().query(
ContactsContract.Groups.CONTENT_URI, projection, ContactsContract.Groups._ID + "=" + groupId , null, null
);
Second way:
I suppose you want to get contacts of specific group by a constants name. so, it's enough you change above codes:
context.getContentResolver().query(
ContactsContract.Groups.CONTENT_URI, projection, ContactsContract.Groups.ACCOUNT_NAME + "='Friends'" , null, null
);
Now you have necessary details from specific Group. Then you can fetch list of Contact List:
public static Cursor getContactsOfGroup(Group group) {
// getting ids of contacts that are in this specific group
String where = ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID + "="
+ group.id + " AND "
+ ContactsContract.CommonDataKinds.GroupMembership.MIMETYPE + "='"
+ ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE + "'";
Cursor query = context.getContentResolver().query(
ContactsContract.Data.CONTENT_URI,
new String[] {
ContactsContract.CommonDataKinds.GroupMembership.CONTACT_ID
}, where, null, ContactsContract.Data.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
String ids = "";
for (query.moveToFirst(); !query.isAfterLast(); query.moveToNext()) {
ids += "," + query.getString(0);
}
if (ids.length() > 0) {
ids = ids.substring(1);
}
// getting all of information of contacts. it fetches all of number from every one
String[] projection = new String[]{
"_id",
"contact_id",
"lookup",
"display_name",
"data1",
"photo_id",
"data2", // number type: 1:home, 2:mobile, 3: work, else : other
};
String selection = "mimetype ='" + ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE + "'"
+ " AND account_name='" + group.accountName + "' AND account_type='" + group.accountType + "'"
+ " AND contact_id in (" + ids + ")";
return context.getContentResolver().query(BASE_URI, projection, selection, null, null);
}
Notice, in second fetch in this method we check accountName and accountType to be sure this record is related this group, because may be there are some records that stored for another Apps like WhatsApp. and we don't like get those. ok?
I hope will useful for you.