使用调试器命令以仿真模式启动 Chrome，但页面显示为 PC 版本

Question

在 PC 平台上，我想以 iPhone 5 设备模式启动 Chrome 来测试我的项目。

现在我在选项卡更新时使用调试器命令Page.setDeviceMetricsOverride。因此，我获得了正确的设备模式，但我的页面显示与 PC 版本相同，而不是移动版本。我希望我的页面显示与 iPhone 5.

中的相同

谁能帮帮我？

示例代码：

var phonesArray = [
    {title: "Apple iPhone 4", width: 320, height: 480, deviceScaleFactor: 2, userAgent: "Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5", touch: true, mobile: true},
    {title: "Apple iPhone 5", width: 320, height: 568, deviceScaleFactor: 2, userAgent: "Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53", touch: true, mobile: true},
 ];

var phones = {};
phonesArray.forEach(function(phone){
    phones[phone.title.replace(/\s+/gi,'')] = phone;
});

chrome.tabs.onCreated.addListener(function(tab) {
 console.log("chrome.tabs.onCreated...");
 if(tab.url.indexOf("chrome://") != 0 
 && tab.url.indexOf("chrome-devtools://") != 0)
 {
  chrome.debugger.attach({"tabId": tab.id}, "1.0");
  chrome.debugger.sendCommand({"tabId": tab.id}, "Runtime.enable",{}, function(msg){});
  chrome.debugger.sendCommand({"tabId": tab.id}, "Page.enable",{}, function(msg){});
  console.log("setDeviceMetricsOverride...");
    chrome.debugger.sendCommand({"tabId": tab.id}, "Page.setDeviceMetricsOverride", {
     width:              phones.AppleiPhone5.width,
   height:             phones.AppleiPhone5.height,
   deviceScaleFactor:  phones.AppleiPhone5.deviceScaleFactor,
   mobile:             phones.AppleiPhone5.mobile,
   emulateViewport:    true,
   fitWindow:          false
     },function(msg){});
    chrome.debugger.sendCommand({"tabId": tab.id}, "Network.setUserAgentOverride", 
    {userAgent:phones.AppleiPhone5.userAgent},function(msg){
    });
 }
}); 

chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
 console.log("chrome.tabs.onUpdated...");
 console.log(changeInfo);
 if(changeInfo.status == "loading" && tab.url.indexOf("chrome://") != 0 
 && tab.url.indexOf("chrome-devtools://") != 0) {
  console.log("attach debugger on about:blank. tab.id = " + tab.id);
  chrome.debugger.attach({"tabId": tab.id}, "1.0");
  chrome.debugger.sendCommand({"tabId": tab.id}, "Runtime.enable",{}, function(msg){});
  chrome.debugger.sendCommand({"tabId": tab.id}, "Page.enable",{}, function(msg){});
  console.log("setDeviceMetricsOverride...");
    chrome.debugger.sendCommand({"tabId": tab.id}, "Page.setDeviceMetricsOverride", {
     width:              phones.AppleiPhone5.width,
      height:             phones.AppleiPhone5.height,
      deviceScaleFactor:  phones.AppleiPhone5.deviceScaleFactor,
      mobile:             phones.AppleiPhone5.mobile,
      emulateViewport:    true,
      fitWindow:          false
    },function(msg){});
    chrome.debugger.sendCommand({"tabId": tab.id}, "Network.setUserAgentOverride", 
    {userAgent:phones.AppleiPhone5.userAgent},function(msg){
    }); 
 }
});

Answer 1

你需要在Network.setUserAgentOverride之前发送指令Network.enable，像这样：

 chrome.debugger.attach({tabId: tab.id}, "1.0", function(){

    if (!chrome.runtime.lastError) {

        chrome.debugger.sendCommand({tabId: tab.id}, "Network.enable", {}, function(result) {

            chrome.debugger.sendCommand({tabId: tab.id}, "Network.setUserAgentOverride", { userAgent : phones.AppleiPhone5.userAgent }, function(result){

            });
        });
    }
});

虽然它看起来确实按照您编写的方式工作，但您应该在附加调试器并发送命令后等待回调。此外，附加调试器后，您无需在更新选项卡时再次附加它。

使用调试器命令以仿真模式启动 Chrome，但页面显示为 PC 版本

Start Chrome in an emulation mode with debugger command but pages show as PC version

javascript

google-chrome

google-chrome-extension

device-emulation