Chrome.tabs.captureVisibleTab（）总是返回失败的消息，直到我点击弹出窗口。
在后台的错误信息中，它说：
错误：需要“<all_urls>”或“activeTab”权限。
实际上，我添加了“activeTab”权限。
奇怪的是，点击弹出页面后，一切都很好。
content_script.js：
let btn = document.createElement("button")btn.innerText="screen cap"document.body.appendChild(btn)btn.onclick=(e)=>{chrome.runtime.sendMessage({purpose:"screenCap"})}chrome.runtime.onMessage.addListener((msg)=>{if(msg.purpose && msg.purpose==="screenCap" ){if(msg.status) {console.log(msg.data)}else{console.log("screen cap failed")}}})
字符串
background.js
chrome.runtime.onMessage.addListener((msg)=>{if(msg.purpose && msg.purpose === "screenCap"){chrome.tabs.captureVisibleTab().then((data)=>{ })}})
型
manifest.json
{"manifest_version": 3,"name": "screen cap test","version": "1.0.1","action": { "default_popup": "popup.html" },"content_scripts": [{"js": ["content.js"],"matches": ["http://*/*", "https://*/*"]}],"background": {"service_worker": "background.js","persistent": true},"externally_connectable": {"matches": ["*://*.google.com/*"]},"permissions": ["activeTab","tabs","notifications","storage"],"web_accessible_resources": [{"matches": ["<all_urls>"],"resources": ["**/*","*"],"use_dynamic_url": true}]}
型
popup.html
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title></head><body><h1>hello world</h1></body></html>
1条答案
按热度按时间tzcvj98z1#
拥有“activeTab”权限并不意味着扩展自动接收当前活动选项卡的临时主机权限。
用户还必须通过执行以下操作之一来调用扩展：https://developer.chrome.com/docs/extensions/mv3/manifest/activeTab/#invoking-activeTab
https://developer.chrome.com/docs/extensions/mv3/manifest/activeTab/
当用户调用扩展（例如通过单击其操作）时，activeTab权限使扩展可以临时访问当前活动的选项卡。当用户在该页面上时，对选项卡的访问将持续，当用户导航离开或关闭选项卡时，对选项卡的访问将被撤销。
https://developer.chrome.com/docs/extensions/reference/tabs/#perms
“activeTab”权限
activeTab为当前选项卡赠款扩展临时主机权限以响应用户调用。与主机权限不同，activeTab不会触发任何警告。