I am trying to update one column for any number of rows.
Here is the function:
public void setAwardsSyncComplete(String[] ids) {
String inArray = StringUtils.separateCommas(ids);
db.beginTransaction();
try {
ContentValues contentValues = new ContentValues();
contentValues.put(COL_SYNCED, true);
int rowsAffected = db.update(TABLE, contentValues, COL_ID + " IN (" + inArray + ")", null);
} catch (Exception e) {
DebugLog.e("Error in transaction", e.toString());
} finally {
db.endTransaction();
}
}
What is strange is that the rowsAffected returns correctly (ie rowsAffected > 0), but the column values remain null .
Am I overlooking something very simple here?
Thanks.
As you're using transactions, you need to call db.setTransactionSuccessful(); at the end of the try clause. Without this, the update gets rolled back.
See SQLiteDatabase.beginTransaction
Hope this helps,
Phil Lello
你需要调用db.setTransactionSuccussful()
后db.update
否则任何更改都将回滚,当你调用endTransaction()
。
there's no explicit boolean type in sqlite tables? what data type is the COL_SYNED column you are trying to update?
and you will need to call db.setTransactionSuccussful()
I think there is a problem on your update..
You need to loop your array and update each one by one..
private int _rowsAffected;
foreach (var a in inArray)
{
_rowsAffected= db.update(TABLE, contentValues, COL_ID + " = (" + a +")", null);
}
db.Commit();
db.setTransactionSuccussful();
if(_rowsAffected > 0)
//Success
Regards
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