How can I apply the Android Oreo(8.0) Autofill framework to WebView?

Question

https://developer.android.com/about/versions/oreo/android-8.0-changes.html#all-apps

Web form autofill

Now that the Android Autofill Framework provides built-in support for autofill functionality, the following methods related to WebView objects have changed for apps installed on devices running Android 8.0 (API level 26):

WebSettings

• The getSaveFormData() method now returns false. Previously, this method returned true instead.
• Calling setSaveFormData() no longer has any effect.

WebViewDatabase

• Calling clearFormData() no longer has any effect.
• The hasFormData() method now returns false. Previously, this method returned true when the form contained data.

Answer 1

This is the basic example to force an autofill request

public void eventHandler(View view) {
    AutofillManager afm = context.getSystemService(AutofillManager.class);
    if (afm != null) {
        afm.requestAutofill();
    }
}

check the complete documentation