线程 1:EXC_BAD_INSTRUCTION(代码=EXC_I386_INVOP，子代码=0x0) [英] Thread 1:EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

问题描述

我正在尝试在 (Xcode) 上为 Swift 中的搜索栏编写代码:

I am trying to write a code for a search bar in Swift on (Xcode):

    @IBOutlet weak var searchPost: UISearchBar!
    @IBOutlet weak var tbvPost: UITableView!

    var posts = [Post]()
    var filteredPosts = [Post]()

extension PostViewController: UITableViewDelegate, UITableViewDataSource {

    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        if searchPost.text != "" {
            return self.filteredPosts.count
        }

        return self.posts.count
    }


if searchPost.text != "" {

我在该行收到此错误:

Thread 1:EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

有什么想法吗?

推荐答案

我的猜测是 searchPost 是 nil 因为你从未连接过故事板的搜索栏到这个出口.

My guess is that searchPost is nil because you have never hooked up a search bar from the storyboard to this outlet.

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