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The second parameter of insert method of SQLiteDatabase is "nullColumnHack". WHat does this refers. What value should be passed to this parameter.
Thanks
Brief explanation..
nullColumnHack
optional; may be null. SQL doesn’t allow inserting a completely empty row without naming at least one column name. If your provided values is empty, no column names are known and an empty row can’t be inserted. If not set to null, the nullColumnHack parameter provides the name of nullable column name to explicitly insert a NULL into in the case where your values is empty.