01_ Web page Source Viewer basic implementation

Android above knock 127.0.0.1 or localhost is not good, Android above the localhost/127.0.0.1 default is 10.0.2.2. Some third-party emulators may not be this value. Android's own simulator is sure to be fine. If it's a third-party simulator, do it yourself. You can connect a router and let your current machine have an address. The route is still better, share your phone with WiFi. Connect all the devices to your phone, make up a local area network, you can turn off the traffic.

01_ Web page Source Viewer basic implementation