CODEWITHSUNDEEP
javaandroidxmlwebview
James
James

Reputation: 102

onBackPressed() - cannot resolve symbol 'webView'

I'm trying to get back button functionality in my WebView app, but the onBackPressed() function is giving the error 'cannot resolve symbol webView'

Here's my code:

@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    AdView mAdView;
    mAdView = (AdView) findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    mAdView.loadAd(adRequest);

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

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    // To keep browser in width of phone
    webView.getSettings().setUseWideViewPort(true);
    webView.getSettings().setLoadWithOverviewMode(true);

    // Sets default text size
    webSettings.setTextZoom(175);

    MyWebViewClient webViewClient = new MyWebViewClient();
    webView.setWebViewClient(webViewClient);

    webView.loadUrl("http://www.google.com");
}

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

Upvotes: 3

Views: 1441

Answers (1)

krystian71115
krystian71115

Reputation: 1937

You can do this in onBackPressed: 

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

Edit: You can do this (with field): 

private WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState){
      // ...
      this.webView = (WebView) findViewById(R.id.webView);
      // ...
}

@Override
public void onBackPressed(){
    // now you don't need findViewById because you can access field prepared in onCreate
    if (webView.canGoBack()) {
        webView.goBack();
    } else {
        super.onBackPressed();
    }
}

Upvotes: 3

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