[Swift][OC]代码实现导航

先看看效果，很简单的东西

swift版：

sb里建立这样的控制器

别忘了设置storyboard ID

分别设置三个button的tag为101，102，103

 @IBAction func BtnClick(sender: UIButton) {
        switch sender.tag {
        case 101:
            let redVC = storyboard?.instantiateViewControllerWithIdentifier("redVC")
            //先通过storyboard ID取得对应的ViewController
            self.navigationController?.pushViewController(redVC!, animated: true)
            //通过push方法压栈
        case 102:
            let orangeVC = storyboard?.instantiateViewControllerWithIdentifier("orangeVC")
            self.navigationController?.pushViewController(orangeVC!, animated: true)
        case 103:
            let blueVC = storyboard?.instantiateViewControllerWithIdentifier("blueVC")
            self.navigationController?.pushViewController(blueVC!, animated: true)
        default:
            break
        }
    }

 OC版：

.h文件中定义一个UIViewController

@property(nonatomic,assign)UIViewController *con;

 .m文件中

- (IBAction)clicked:(UIButton *)sender {
    switch (sender.tag) {
        case 101:
            _con = [self.storyboard instantiateViewControllerWithIdentifier:@"redVC"];
            [self.navigationController pushViewController:_con animated:YES];
            break;
        case 102:
            _con = [self.storyboard instantiateViewControllerWithIdentifier:@"blueVC"];
            [self.navigationController pushViewController:_con animated:YES];
            break;
            
        default:
            break;
    }
}

 思路都是一样的，其中一般每个ViewController都有对应的类，上面的通过storyboard id初始化一个VC的时候可以这样写