iOS 规范设置指针的一种方法

-(void)setState:(PeriodState *)newState{

      [selfgetRecordState];

      //    int i = 0;

    AppDelegate_iPhone * appDelegate = (AppDelegate_iPhone *)         [[UIApplicationsharedApplication]
delegate];

    // Setting *settinfo= appDelegate.settingObj;

    if(newState !=state){

         [staterelease];

         state = [newStateretain];

    }

}