ios - 通过按钮替换 ViewController,线程 1 : EXC_BAD_INSTRUCTION
<p><p>我想用一个 <code>ViewController</code> 替换我的 <code>UITableViewController</code>,里面有一个 <code>UITableView</code>。为此,我使用以下代码:</p>
<pre><code>@objc func buttonAction(sender: UIButton!) {
let newController = storyboard?.instantiateViewController(withIdentifier: "VcId") as! JobTableViewController
self.navigationController?.present(newController, animated: true, completion: nil)
}
</code></pre>
<p>但我总是在第二行得到这个错误</p>
<blockquote>
<p>Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)</p>
</blockquote></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>你应该这样做:</p>
<pre><code>guard let newController = storyboard?.instantiateViewController(withIdentifier: "VcId") as? JobTableViewController else {return}
self.navigationController?.present(newController, animated: true, completion: nil)}
</code></pre>
<p>这个错误可能是因为在storyboard中没有找到viewcontroller,你可能给了错误的ID。</p></p>
<p style="font-size: 20px;">关于ios - 通过按钮替换 ViewController,线程 1 : EXC_BAD_INSTRUCTION,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/51736448/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/51736448/
</a>
</p>
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