How to add “Go Back” function in WebView inside Fragment?

Question

UPDATE: Solved! Problem was related to my Viewpager not WebView.

I\'m trying to add a \"Go Back\" function to my WebView which is insid

Answer 1

There is a simple way with BackPressedDispatcher

Fragment:

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    val callback = object : OnBackPressedCallback(true) {
        override fun handleOnBackPressed() {
            if(webView.canGoBack()){
               webView.goBack()
            } else {
                isEnabled = false
                requireActivity().onBackPressed()
            }
        }
    }
    requireActivity().onBackPressedDispatcher.addCallback(this,callback)
}

Activity :

override fun onBackPressed() {
    val fragment = supportFragmentManager.findFragmentByTag("WebViewFragment")
    if (WebViewFragment::class.java.isInstance(fragment)) {
        if (onBackPressedDispatcher.hasEnabledCallbacks()) {
            onBackPressedDispatcher.onBackPressed()
            return
        }
        super.onBackPressed()
    }
}

Maybe these codes can be improved, but it works very well for me. For more information visit here.