//设置title和image

        for (i,value) in self.tabBar.items!.enumerate() {

            value.title = titleArray[i]

            //item字体相关,字体是一个title一个tile设置的要用循环拿到每个title

            value.setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.lightGrayColor(),NSFontAttributeName: UIFont.systemFontOfSize(15)], forState: .Normal)

            在tabBar中设置title字体

            value.setTitleTextAttributes([NSFontAttributeName:UIFont.systemFontOfSize(15), NSForegroundColorAttributeName:UIColor.orangeColor()],forState: .Selected)

        }

然而在navigationBar中设置title是

 self.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]


 item.image = UIImage.init(named: imageName[i])?.imageWithRenderingMode(.AlwaysOriginal)

            item.selectedImage = UIImage.init(named: imageName[i] + "_1")?.imageWithRenderingMode(.AlwaysOriginal)





 //第一次点击放大，第二次点击缩小
        if self.imageView.frame.size.width == 200 {
            
            self.imageView.frame = self.view.bounds
            
        }else{
        
            self.imageView.frame = CGRectMake(0, 0, 200, 200)
            self.imageView.center = self.view.center
        }