Do states that have a state income tax do not collect the sales taxes?

I live in California and we have income/ sales taxes/ gas taxes. Right now our gas price per gallon is 3.38 and a majority of the price is in taxes. Even if you move out of state or the country if you earned money in California you are suppose to file a state income tax form. I think if you were on the moon California would tax you. The sales taxes vary according to city or area. In some places it is 8-9% on the dollar, but the state sets it at 7 %. California is expensive to live in.