This article shows how to inspect web page elements within an Android Webview.
Preparation
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Enable "Developer Mode" -> "USB debugging" in your phone.

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Connect your phone to your laptop with a USB cable. When the permission prompts on your phone, click "Allow."
Steps to enable
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Open a Google Chrome browser and go to chrome://inspect/
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You should see a remote device connected.

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In your Android Studio, place the code to enable Webview debugging.
WebView.setWebContentsDebuggingEnabled(true) -
Run debug deployment in your Android Studio and wait for the app to launch.
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Open the Webview within your App.
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Back to Chrome Browser, and you can perform inspect elements.