Come caricare la pagina Web esterna in WebView

Question

Il mio problema è che la pagina Web non è caricata all'interno della webview.

mWebview.loadUrl("http://www.google.com"); lancia il browser web ...

Questo è il codice della mia attività:

import android.app.Activity; 
import android.os.Bundle; 
import android.webkit.WebView; 

public class Main extends Activity { 

    private WebView mWebview; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     mWebview = new WebView(this); 
     mWebview.loadUrl("http://www.google.com"); 
     setContentView(mWebview); 
    } 
} 

ho aggiunto il permesso richiesto nel Manifesto:

<uses-permission android:name="android.permission.INTERNET" /> 

Answer 1

Grazie a questo post, ho finalmente trovato la soluzione. Ecco il codice:

import android.app.Activity; 
import android.os.Bundle; 
import android.webkit.WebResourceError; 
import android.webkit.WebResourceRequest; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 
import android.widget.Toast; 
import android.annotation.TargetApi; 

public class Main extends Activity { 

    private WebView mWebview ; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 

     mWebview = new WebView(this); 

     mWebview.getSettings().setJavaScriptEnabled(true); // enable javascript 

     final Activity activity = this; 

     mWebview.setWebViewClient(new WebViewClient() { 
      @SuppressWarnings("deprecation") 
      @Override 
      public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 
       Toast.makeText(activity, description, Toast.LENGTH_SHORT).show(); 
      } 
      @TargetApi(android.os.Build.VERSION_CODES.M) 
      @Override 
      public void onReceivedError(WebView view, WebResourceRequest req, WebResourceError rerr) { 
       // Redirect to deprecated method, so you can use it in all SDK versions 
       onReceivedError(view, rerr.getErrorCode(), rerr.getDescription().toString(), req.getUrl().toString()); 
      } 
     }); 

     mWebview .loadUrl("http://www.google.com"); 
     setContentView(mWebview); 

    } 

} 

Answer 2

provare questo

webviewlayout.xml:

<?xml version="1.0" encoding="utf-8"?> 
<WebView xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/help_webview" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:scrollbars="none" 
/> 

nella vostra attività:

WebView webView; 
setContentView(R.layout.webviewlayout); 
webView = (WebView)findViewById(R.id.help_webview); 
webView.getSettings().setJavaScriptEnabled(true); 
webview.loadUrl("http://www.google.com"); 

Aggiornamento

Aggiungi webView.setWebViewClient(new WebViewController()); alla vostra attività.

classe WebViewController:

public class WebViewController extends WebViewClient { 

    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     view.loadUrl(url); 
     return true; 
    } 
} 

Answer 3

Si prega di questo codice: -

main.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="fill_parent" 
    android:layout_height="fill_parent" android:background="@drawable/background"> 
    <RelativeLayout android:layout_width="fill_parent" 
     android:layout_height="wrap_content" android:background="@drawable/top_heading" 
     android:id="@+id/rlayout1"> 
     <TextView android:layout_width="wrap_content" 
      android:layout_centerVertical="true" android:layout_centerHorizontal="true" 
      android:textColor="#ffffff" android:textSize="22dip" 
      android:textStyle="bold" android:layout_height="wrap_content" 
      android:text="More Information" android:id="@+id/txtviewfbdisplaytitle" /> 
    </RelativeLayout> 
    <RelativeLayout android:layout_width="fill_parent" 
     android:layout_height="fill_parent" android:layout_below="@+id/rlayout1" 
     android:id="@+id/rlayout2"> 
     <WebView android:id="@+id/webview1" android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:layout_weight="1.0" /> 
    </RelativeLayout> 
</RelativeLayout> 

MainActivity.Java

public class MainActivity extends Activity { 
    private class MyWebViewClient extends WebViewClient { 
      @Override 
      public boolean shouldOverrideUrlLoading(WebView view, String url) { 
       view.loadUrl(url); 
       return true; 
      } 
    } 
    Button btnBack; 
    WebView webview; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     webview=(WebView)findViewById(R.id.webview1); 
     webview.setWebViewClient(new MyWebViewClient()); 
     openURL(); 
    } 

    /** Opens the URL in a browser */ 
    private void openURL() { 
     webview.loadUrl("http://www.google.com"); 
     webview.requestFocus(); 
    } 
} 

Prova questo codice se qualsiasi domanda mi chiedono .

Answer 4

Aggiungi il metodo seguente nella tua classe di attività.Il browser non è altro che il tuo oggetto webview.

Ora è possibile visualizzare facilmente il contenuto della pagina Web.

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if ((keyCode == KeyEvent.KEYCODE_BACK) && browser.canGoBack()) { 
     browser.goBack(); 
     return true; 
    } 
    return false; 
} 

Answer 5

public class WebViewController extends WebViewClient { 
    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     view.loadUrl(url); 
     return true; 
    } 
} 
webView.setWebViewClient(new WebViewController()); 

Answer 6

Si può fare in questo modo.

webView = (WebView) findViewById(R.id.webView1); 
webView.getSettings().setJavaScriptEnabled(true); 
webView.loadUrl("Your URL goes here"); 

Answer 7

E 'molto semplice cercare di integrare queste righe di codice prima autorizzazione Diventa nel file manifesto Android

<uses-permission android:name="android.permission.INTERNET" /> 

poi scrivere del codice in te Activity.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context="com.example.MainActivity"> 

<WebView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/help_webview" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 

/> 

</LinearLayout> 

Quindi scrivi questi codici nel tuo Mai nActivity.java

import android.app.Activity; 
import android.content.Intent; 
import android.content.res.Resources; 
import android.net.Uri; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.KeyEvent; 
import android.view.Window; 
import android.webkit.WebResourceRequest; 
import android.webkit.WebSettings; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 
import android.widget.Toast; 

public class MainActivity extends Activity{ 
    private WebView mWebview ; 
    String link = "";// global variable 
    Resources res;// global variable 
    @Override 


     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      requestWindowFeature(Window.FEATURE_NO_TITLE); 
      setContentView(R.layout.activity_modernherbal_main); 
      mWebview = (WebView) findViewById(R.id.help_webview); 
      WebSettings webSettings = mWebview.getSettings(); 
      webSettings.setJavaScriptEnabled(true); 
      webSettings.setUseWideViewPort(true); 
      webSettings.setLoadWithOverviewMode(true); 



     final Activity activity = this; 

     mWebview.setWebViewClient(new WebViewClient() { 
      public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 
       Toast.makeText(activity, description, Toast.LENGTH_SHORT).show(); 
      } 


}); 

    mWebview .loadUrl("http://www.example.com"); 

} 

}

Prova questo vi aiuterà a risolvere il tuo problema

Answer 8

provare questo;

webView.loadData("<iframe src='http://www.google.com' style='border: 0; width: 100%; height: 100%'></iframe>", "text/html; charset=utf-8", "UTF-8");