Develop Reference

Android MMS database, select rows by date from a mystery column

I am accessing Android MMS database to get the date of MMS message:
Uri mmsUri = Uri.parse("content://mms/");
ContentResolver contentResolver = getContentResolver();
String[] projection = {"_id", "date"};
Cursor cursor = contentResolver.query(mmsUri, projection, null, null, null);
long dateVal = cursor.getLong(cursor.getColumnIndex("date"));
//This date is always 1970
Date mmsDate = new Date(dateVal);
But the date I get is always 1970. Then, I found an answer for this. I need to set the projection to null (to return all columns) and then use the following code to get date value:
//A mystery column of index 2
long timestamp = cursor.getLong(2) * 1000;
//It works !
Date mmsDate = new Date(timestamp);
Everything until here is fine. But, now instead of geting all rows from MMS database, I need to select those rows which were sent after a certain date, which means I need to use selection & selection argument. Something like:
String selection = NAME_OF_MYSTERY_COLUMN_IDX_2 > minDate
Cursor cursor = contentResolver.query(mmsUri, projection, selection, null, null);
But I have no idea what is the name of the column with index 2, how could I achieve what I need ? Is there a workaround?

Your first code block is correct, except for the Date instantiation. That constructor expects the time in milliseconds, but the MMS table keeps dates in seconds. To correct this, simply multiply the value returned from the query by 1000.
Date mmsDate = new Date(dateVal * 1000);
For future reference, the Cursor#getColumnName() method will give you the String name for a given column index.

You can try this.
String selection = "date_sent" > minDate
https://developer.android.com/reference/android/provider/Telephony.BaseMmsColumns.html#DATE_SENT

ERROR : CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0

Hy Guys, I am Beginner Android Developer. I need your help. i want to insert data into 2 tables of sqlite tblorder, and orderdtl. on orderdtl i have to insert data from multiple item from listview. i try to toast all variable that i want to inserted. their all appears. but when i try to save it. i get those error.
this is my DBDataSource.java
public order createorder(String orderid, String notes, long outletid) {
ContentValues values = new ContentValues();
values.put(DBHelper.ORDER_ID, orderid); // inserting a string
values.put(DBHelper.NOTES, notes); // inserting an int
values.put(DBHelper.OUTLET_ID, outletid); // inserting an int
long insertId = database.insert(DBHelper.TABLE_ORDER, null,
values);
Cursor cursor = database.query(DBHelper.TABLE_ORDER,
allorder, DBHelper.ORDER_ID + " = " + insertId, null,
null, null, null);
cursor.moveToFirst();
order neworder = cursorToorder(cursor);
cursor.close();
return neworder;}
private order cursorToorder(Cursor cursor) {
order order = new order();
order.setorderid(cursor.getString(cursor.getColumnIndex(DBHelper.ORDER_ID)));
order.setorderdate(cursor.getString(cursor.getColumnIndex(DBHelper.ORDER_DATE)));
order.setnotes(cursor.getString(cursor.getColumnIndex(DBHelper.NOTES)));
order.setoutletid(cursor.getLong(cursor.getColumnIndex(DBHelper.OUTLET_ID)));
return order;
}
The error refer to this code
Cursor cursor = database.query(DBHelper.TABLE_ORDER,
allorder, DBHelper.ORDER_ID + " = " + insertId, null,
null, null, null);
And this code
order.setorderid(cursor.getString(cursor.getColumnIndex(DBHelper.ORDER_ID)));
orderid is string, i try to get from yyyyMMddHHmmss.this is the code:
private String orderid(){
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyyMMddHHmmss", Locale.getDefault());
Date date = new Date();
return dateFormat.format(date);
}
I would be very grateful for any help that you give.Thank You.

The query didn't match any rows. Check the result of moveToFirst() to see whether the operation succeeded and only then access cursor data.
Example:
order neworder = null;
if (cursor.moveToFirst()) {
order neworder = cursorToorder(cursor);
}
cursor.close();
return neworder;
The insertId you get from insert() is the sqlite row id for the row. It's likely not the same as ORDER_ID. To make a column an alias for rowid, declare it as INTEGER PRIMARY KEY.

The error I see in logcat is not about _Player_8, but about the unknown column "KEY_Team_Name"
The problem is in your activity, the line prior to the last one:
String EntryA =String.valueOf( db.getentry("Ravirrrr", "KEY_Team_Name"));
It should be:
String EntryA =String.valueOf( db.getentry("Ravirrrr", DatabaseHandler.KEY_Team_Name));
And the DatabaseHandler should have all column names public, as the getentry method requires a column name.
Edit: adding an answer to the question in the comments below.
After calling db.query, you should check if you got something by calling Cursor.isAfterLast(). If true, the select returned an empty result set.
In your example, you WILL get an empty result set as the code creates an entry with "Ravi" as the team name, then asks for a team named "Ravirrrr".

Android: Getting row by id

I'm trying to get database row by it's ID, but somehow query doesn't return that row. The sql query SELECT * From Table1 Where _id = 100 works good, so I don't know what's the reason. Here is the code of the query:
String [] selectedArgs = new String [] {String.valueOf(selectedItemId)};
String selection = Tables.Table1.COLUMN_ID + "=?";
String [] columns = {Tables.Table1.COLUMN_ID, Tables.Table1.COLUMN_NAME};
Cursor c = foodDB.query(Tables.Food.TABLE_NAME, columns, selection, selectedArgs, null, null, null);
Does anybody have any suggestions?

The problem is that your ID field is a number, while the parameter is a string; the query function does not allow other parameter types for some strange reason.
Try using an expression like COLUMN_ID + " = CAST(? AS INTEGER)".
If your query had only one result column, you could use a separate SQLiteStatement object where you'd be able to use bindLong().

Just in case somebody need it, i have used rawQuery() method for such type of query to work, because query() doesn't work.

Understanding SQLite Cursor Behavior

I'm writing a method to update default settings in a table. The table is very simple: two columns, the first containing labels to indicate the type of setting, the second to store the value of the setting.
At this point in the execution, the table is empty. I'm just setting up the initial value. So, I expect that this cursor will come back empty. But instead, I'm getting an error (shown below). The setting that I am working with is called "lastPlayer" and is supposed to get stored in the "SETTING_COLUMN" in the "SETTINGS_TABLE". Here's the code:
public static void updateSetting(String setting, String newVal) {
String table = "SETTINGS_TABLE";
String[] resultColumn = new String[] {VALUE_COLUMN};
String where = SETTING_COLUMN + "=" + setting;
System.err.println(where);
SQLiteDatabase db = godSimDBOpenHelper.getWritableDatabase();
Cursor cursor = db.query(table, resultColumn, where, null, null, null, null);
System.err.println("cursor returned"); //I never see this ouput
\\more
}
sqlite returned: error code = 1, msg = no such column: lastPlayer
Why is it saying that there is no such column lastPlayer? I thought that I was telling the query to look at the column "SETTING_COLUMN" and return the record where that column has a value "lastPlayer". I'm confused. Can somebody straighten me out? I've been looking a this for an hour and I just don't see what I am doing wrong.
Thanks!

You're not properly building/escaping your query. Since the value lastPlayer is not in quotes, your statement is checking for equality of two columns, which is what that error message is saying.
To properly build your query, it's best to not do this manually with String concatenation. Instead, the parameter selectionArgs of SQLiteDatabase.query() is meant to do this.
The parameters in your query should be defined as ? and then filled in based on the selectionArgs. From the docs:
You may include ?s in selection, which will be replaced by the values
from selectionArgs, in order that they appear in the selection. The
values will be bound as Strings.
So, your code would look like this:
String where = SETTING_COLUMN + " = ?";
Cursor cursor = db.query(table, resultColumn, where, new String[] { setting }, null, null, null);

Get a cursor with a raw sql with ormlite

I'd like to use a SimpleCursorAdapter with a Spinner.
I found how to return a Cursor.
QueryBuilder<ChoixPointVerification, Integer> qb = choixPointVerificationDao.queryBuilder();
qb.where().eq(FIELD, id);
PreparedQuery<ChoixPointVerification> preparedQuery = qb.prepare();
AndroidCompiledStatement compiledStatement =
(AndroidCompiledStatement)preparedQuery.compile(db, StatementType.SELECT);
Cursor cursor = compiledStatement.getCursor();
return cursor;
But the Spinner require a _id field and I'll only have an object with an id field. I prefer to avoid the rename of the field.
How can I resolve that case ? I really need to associate an id to all spinner field.
I imagined that I can maybe issue a cursor from a rawsql but I din't find how with ormlite. It seems to be possible if I can create a PreparedQuery with a raw sql.
I also read that if I have an AndroidDatabase object I can issue a Cursor object but how can we create an AndroidDatabase with ormlite ?
I'm really open with all the solution
Regards

You can get the underlying Cursor object from ORMLite by using QueryBuilder without having to resort to a raw query. Take a look at this answer:
Android Cursor with ORMLite to use in CursorAdapter
You can do something like the following code:
// build your query
QueryBuilder<Foo, String> qb = fooDao.queryBuilder();
qb.where()...;
// when you are done, prepare your query and build an iterator
CloseableIterator<Foo> iterator = dao.iterator(qb.prepare());
try {
// get the raw results which can be cast under Android
AndroidDatabaseResults results =
(AndroidDatabaseResults)iterator.getRawResults();
Cursor cursor = results.getRawCursor();
...
} finally {
iterator.closeQuietly();
}

Well I just found a solution which seems to be efficient, simple, and compliant with ormlite.
I just have to get an AndroidDatabase with getHelper().getReadableDatabase().
and then use
Cursor cursor = db.query("choixpointverification",
new String[] { "id", "id as _id", "nom" },
"masque = 0 and idPointVerification = " + idPointVerification.toString(),
null, null, null, "tri");