For loop issue in class

Question

I have to get IDs of Call custom object from Incident Transaction custom object and run a for loop on call feeding the list. Can someone help me here?

   List<SObject> myCalls = [SELECT Call_abv__c FROM Incident_Transaction_abv__c];

   List<Call2_vod__c> Call= new List<Call2_vod__c>();

    for(Call2_vod__c cl:myCalls)
    {   

    }

Getting below error:

Compile Error: Loop variable must be of type SObject at line

Answer 1

You need to typecast List of SObjects to List of relevant object. So your code should look like -

   List<SObject> myCalls = [SELECT Call_abv__c FROM Incident_Transaction_abv__c];
   List <Incident_Transaction_abv__c> myCallsInc = (List <Incident_Transaction_abv__c>) myCalls;
   List<Call2_vod__c> Call= new List<Call2_vod__c>();
   for(Incident_Transaction_abv__c ita : myCallsInc )
    {   

    }

Answer 2

myCalls is of type List<Incident_Transaction_abv__c>. You can't iterate over a more specific type than a less specific type without casting. You need to make the loop variable type and the list type agree with each other.