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];

}

}