1. 打开 xcode

2. 文件 > 新建 >项目 > Cocoa 应用

3. 文件 > 新建 > 目标 > Safari 扩展

4. 编译并运行扩展

5. 选择 Safari 。

6. xcode 编译没有错误。

Safari 打开几秒钟然后崩溃。

这是调试窗口的输出。

2018-10-10 15:27:18.039905-0700 Safari[1020:16719] [SQLiteStore] Failed to acquire database store coordination lock at /Users//Library/Safari/Favicon Cache/favicons.db-lock: [35: Resource temporarily unavailable] 2018-10-10 15:27:18.040155-0700 Safari[1020:16719] [SQLiteStore] Failed to acquire exclusive access to database at file:///Users//Library/Safari/Favicon%20Cache/favicons.db. 2018-10-10 15:27:18.041141-0700 Safari[1020:16719] [SQLiteStore] Failed to acquire database store coordination lock at /Users//Library/Safari/Favicon Cache/favicons.db-lock: [35: Resource temporarily unavailable] 2018-10-10 15:27:18.041226-0700 Safari[1020:16719] [SQLiteStore] Failed to acquire exclusive access to database at file:///Users//Library/Safari/Favicon%20Cache/favicons.db. 2018-10-10 15:27:18.041331-0700 Safari[1020:16719] [SQLiteStore] Falling back to an in-memory store 2018-10-10 15:27:18.042877-0700 Safari[1020:16719] [FaviconPersistence] Using in-memory representation for database /Users//Library/Safari/Favicon Cache/favicons.db 2018-10-10 15:27:18.125466-0700 Safari[1020:16771] [SQLiteStore] Failed to acquire database store coordination lock at /Users//Library/Caches/com.apple.Safari/TabSnapshots/Metadata.db-lock: [35: Resource temporarily unavailable] 2018-10-10 15:27:18.125660-0700 Safari[1020:16771] [SQLiteStore] Failed to acquire exclusive access to database at file:///Users//Library/Caches/com.apple.Safari/TabSnapshots/Metadata.db. 2018-10-10 15:27:18.235987-0700 Safari[1020:16718] flock failed to lock maps file: errno = 35 2018-10-10 15:27:18.236343-0700 Safari[1020:16718] flock failed to lock maps file: errno = 35 2018-10-10 15:27:18.293614-0700 Safari[1020:16718] Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. 2018-10-10 15:27:18.299481-0700 Safari[1020:16718] Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. 2018-10-10 15:27:18.300530-0700 Safari[1020:16718] Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. 2018-10-10 15:27:18.304153-0700 Safari[1020:16718] Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. 2018-10-10 15:27:18.620185-0700 Safari[1020:16763] Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. 2018-10-10 15:27:18.623032-0700 Safari[1020:16773] [CrowdsourcedAutoFill] Unable to read cloud AutoFill correction sets, error: Error Domain=NSCocoaErrorDomain Code=260 "The file couldn’t be opened because it doesn’t exist." 2018-10-10 15:27:18.629453-0700 Safari[1020:16763] Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. 2018-10-10 15:27:18.675086-0700 Safari[1020:16765] [CloudBookmarks] Error fetching remote migration state: Error Domain=com.apple.SafariBookmarksSync.CloudBookmarksErrorDomain Code=0 "(null)" 2018-10-10 15:27:18.771588-0700 Safari[1020:16718] [RemotePlistController] The downloaded plist could not be loaded: Error Domain=NSCocoaErrorDomain Code=260 "The file couldn’t be opened because it doesn’t exist." 2018-10-10 15:27:19.161007-0700 Safari[1020:16773] Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. 2018-10-10 15:27:19.167933-0700 Safari[1020:16773] Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. 2018-10-10 15:27:19.279743-0700 Safari[1020:16763] [RemotePlistController] The downloaded plist could not be loaded: Error Domain=NSCocoaErrorDomain Code=260 "The file couldn’t be opened because it doesn’t exist." 2018-10-10 15:27:20.064438-0700 Safari[1020:16763] Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at AutoFillCorrections.db. 2018-10-10 15:27:20.081337-0700 Safari[1020:16763] Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. Failed to acquire exclusive access to AutoFill corrections SQLite store at CloudAutoFillCorrections.db. 2018-10-10 15:27:20.084003-0700 Safari[1020:16763] [CrowdsourcedAutoFill] Neither local nor cloud classification correction databases could be opened Program ended with exit code: 0

我试过重新启动计算机。

我试过清理项目。

我试过用

xatter -cr .

我已经同时尝试了这三个。

最佳答案

如果 Xcode 调试器没有从内容脚本接收到任何事件，它可能会终止扩展进程。根据我的观察，这完全没问题，并且在生产环境中，您的应用不会那么容易死掉(已编辑:这不是真的，请查看帖子底部)。

要规避此行为，您可能需要将此代码段添加到您的 script.js:

setInterval(() => safari.extension.dispatchMessage("ping", {}), 1000);

这将使内容脚本每秒向扩展程序发送一条名为“ping”的消息。这应该足以让您的扩展程序保持事件状态。同样，这只是调试真正需要的，您的生产构建不需要这条线来可靠地工作(已编辑:这不是真的，请查看帖子底部)。

请记住，默认情况下，内容脚本仅注入(inject) *.webkit.org 页面。这由扩展的 Info.plist 文件中的 SFSafariToolbarItem 属性值决定。出于测试目的，您可能希望在所有网站上启用您的扩展程序，如下所示:

<key>SFSafariWebsiteAccess</key>
<dict>
  <key>Level</key>
  <string>All</string>
</dict>

请注意，内容脚本不会注入(inject)到空选项卡中，因此请务必加载一些远程页面。

更新

显然，Safari 实际上在生产构建中终止扩展的方式与在调试器中的方式相同。所以 setInterval() hack 在这种情况下仍然是相关的。这仅适用于没有弹出窗口的扩展。

关于swift - safari 应用程序扩展在几秒钟后为 hello world 项目崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52749680/