iOS获取当前app版本

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    //软件版本  
    - (void)softwareVersion  
    {  
        NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];  
        NSString *currentVersion = [NSString stringWithFormat:@"当前软件版本为:%@",infoDic[@"CFBundleShortVersionString"]];  
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"软件版本" message:currentVersion delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil nil];  
        [alertView show];  
    }