How to Go Back to Previous Page If Back Button Is Pressed in Webview

How to go back to previous page if back button is pressed in WebView?

I use something like this in my activities with WebViews:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (event.getAction() == KeyEvent.ACTION_DOWN) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                if (mWebView.canGoBack()) {
                    mWebView.goBack();
                } else {
                    finish();
                }
                return true;
        }

    }
    return super.onKeyDown(keyCode, event);
}

Edit:

For this code to work, you need to add a field to the Activity containing the WebView:

private WebView mWebView;

Initialize it in the onCreate() method and you should be good to go.

mWebView = (WebView) findViewById(R.id.webView);

Android Webview make back button go to previous page

I think you should override your activity OnBackPressed :

@Override
public void onBackPressed() {
    if (webView.canGoBack()) {
        webView.goBack();
    } else {
        super.onBackPressed();
    }
}

Android - WebView back button

Override the onBackPressed method in your activity as below:

@Override
public void onBackPressed(){
    WebView wv = (WebView)findViewById(R.id.webview1);
    if(wv.canGoBack()){
        wv.goBack();
    } else {
        super.onBackPressed();
    }
}

Use the above method inside your class, not outside.

public class MainActivity extends AppCompatActivity {

    //onCreate method

    //onBackPressed method

    //other methods

}

How to make device back button to go to the previous page in flutter webview

Wrap Scaffold with this widget

WillPopScope(
  onWillPop: controller.onBackPressedHandler,
  child: Scaffold( ... )

Future<bool> onBackPressedHandler() {

return Future.value(false);} //return false disables default functionality

you can control back button functionality in onBackPressedHandler function.
For your case you should put this line of code inside it

webviewController.goBack();

Back when back button is pressed in webview

This is working for me.

@Override
public void onBackPressed() {
  WebView webView = findViewById(R.id.webView);     
  if (webView.canGoBack()) {
    webView.goBack();
  }
  else {
    ......
  }
}
  

How to detect back button click and make webview go back

you need to make browser a class level variable so you can access it anywhere in your page.

public class WebPage : ContentPage
{
    Xamarin.Forms.Webview browser;

    protected override bool OnBackButtonPressed()
    {

        base.OnBackButtonPressed();

        if (browser.CanGoBack)
        {
            browser.GoBack();
            return true;
        }
        else
        {
            base.OnBackButtonPressed();
            return true;
        }

    }

    public WebPage()
    {


        browser = new Xamarin.Forms.WebView();

        browser.Source = "https://myurl.com";


        Content = browser;

    }
}

WebView - only show back button if back history exists

It works like this:

blizzView.setWebViewClient(new WebViewClient() {      //
    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);

        backButton = findViewById(R.id.backButton);
        backButton.setEnabled(blizzView.canGoBack());

        if (blizzView.canGoBack()) {
            backButton.setVisibility(View.VISIBLE);
        } else {
            backButton.setVisibility(View.INVISIBLE);
        }

    }
});

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