How to debug and monitor pages in WebView? What tools and methods are available?

Debugging and monitoring pages in WebView can use the following tools and methods:

1. Chrome DevTools:

   • Android 4.4+: Connect device via USB, enter chrome://inspect in Chrome
   • Can view DOM structure, network requests, console logs, etc.
   • Supports real-time modification of CSS and JavaScript

2. Safari Web Inspector:

   • iOS: Enable Web Inspector in settings, connect device via Safari
   • Similar functionality to Chrome DevTools

3. Remote debugging:

   • Enable debugging with setWebContentsDebuggingEnabled(true)
   • For devices that cannot be directly connected, use remote debugging tools

4. Log output:

   • Use console.log in JavaScript to output logs
   • Implement onConsoleMessage method of WebChromeClient in native code
   • Capture and display JavaScript errors

5. Network monitoring:

   • Use shouldInterceptRequest method of WebViewClient to monitor network requests
   • Implement custom network request interceptors
   • Use third-party network monitoring tools

6. Performance monitoring:

   • Use window.performance API to get performance metrics
   • Monitor page load time, first screen time, etc.
   • Analyze JavaScript execution time

7. Memory monitoring:

   • Monitor WebView memory usage
   • Detect memory leaks
   • Use Android Profiler or iOS Instruments

8. Error monitoring:

   • Implement error handling methods like onReceivedError
   • Collect and analyze error information
   • Establish error reporting mechanism

9. Automated testing:

   • Use tools like Appium for WebView automated testing
   • Simulate user operations, verify function correctness
   • Performance regression testing