Android Webview不工作2

我試圖使用Android Webview開發，但由於某種原因，我看到一個白色的背景，或看到網站..）：這是我的代碼，我給你帶來了一切，所以你知道也許我首先是錯誤的非常感謝！Android Webview不工作2

activity_main.xml中

<WebView 
    android:id="@+id/webView" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
/>  

</RelativeLayout>

WebActivity.java

package nerya.web; 

import android.annotation.SuppressLint; 
import android.app.Activity; 
import android.app.ProgressDialog; 
import android.os.Bundle; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 

public class WebActivity extends Activity { 

    //private Button button; 
    private WebView webView; 
    public void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

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

     startWebView("http://www.androidexample.com/media/webview/login.html"); 

    } 

    @SuppressLint("SetJavaScriptEnabled") private void startWebView(String url) { 

     //Create new webview Client to show progress dialog 
     //When opening a url or click on link 

     webView.setWebViewClient(new WebViewClient() {  
      ProgressDialog progressDialog; 

      //If you will not use this method url links are opeen in new brower not in webview 
      public boolean shouldOverrideUrlLoading(WebView view, String url) {    
       view.loadUrl(url); 
       return true; 
      } 

      //Show loader on url load 
      public void onLoadResource (WebView view, String url) { 
       if (progressDialog == null) { 
        // in standard case YourActivity.this 
        progressDialog = new ProgressDialog(WebActivity.this); 
        progressDialog.setMessage("Loading..."); 
        progressDialog.show(); 
       } 
      } 
      public void onPageFinished(WebView view, String url) { 
       try{ 
       if (progressDialog.isShowing()) { 
        progressDialog.dismiss(); 
        progressDialog = null; 
       } 
       }catch(Exception exception){ 
        exception.printStackTrace(); 
       } 
      } 

     }); 

     // Javascript inabled on webview 
     webView.getSettings().setJavaScriptEnabled(true); 

     // Other webview options 
     /* 
     webView.getSettings().setLoadWithOverviewMode(true); 
     webView.getSettings().setUseWideViewPort(true); 
     webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY); 
     webView.setScrollbarFadingEnabled(false); 
     webView.getSettings().setBuiltInZoomControls(true); 
     */ 

     /* 
     String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 
     webview.loadData(summary, "text/html", null); 
     */ 

     //Load url in webview 
     webView.loadUrl(url); 


    } 

    // Open previous opened link from history on webview when back button pressed 

    @Override 
    // Detect when the back button is pressed 
    public void onBackPressed() { 
     if(webView.canGoBack()) { 
      webView.goBack(); 
     } else { 
      // Let the system handle the back button 
      super.onBackPressed(); 
     } 
    } 

}

MainActivity.java

package nerya.web; 

import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 


public class MainActivity extends ActionBarActivity { 




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


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 
}

來源

2014-07-19 neryaelul

試試這個 -

webView.setWebViewClient(new WebViewClient() {  
     ProgressDialog progressDialog; 

     //If you will not use this method url links are opeen in new brower not in                  webview 
     public boolean shouldOverrideUrlLoading(WebView view, String url) {    
      view.loadUrl(url); 
      return true; 
     } 

     //Show loader on url load 
     @Override 
     public void onPageStarted(WebView view, String url, Bitmap favicon) 
     { 

      super.onPageStarted(view, url, favicon); 
      if (progressDialog == null) { 
       // in standard case YourActivity.this 
       progressDialog = new ProgressDialog(WebActivity.this); 
       progressDialog.setMessage("Loading..."); 
       progressDialog.show(); 
      } 
     } 
     public void onPageFinished(WebView view, String url) { 
      try{ 
      if (progressDialog.isShowing()) { 
       progressDialog.dismiss(); 
       progressDialog = null; 
      } 
      }catch(Exception exception){ 
       exception.printStackTrace(); 
      } 
     } 

    });

來源

2014-07-19 21:25:51

Android Webview不工作2

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