Question

我遇到了使用loadDataWithBaseURL方法加载网站的问题。我在webview中加载了准备好的internetsite。如果我回到之前的活动并开始webview活动，它会使用loadDataWithBaseURL（）方法加载相同的准备好的网站，但我得到一个内容两倍的webview。例如Hello World和第二个Hello World。我的代码如下：

 package de.http.test;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebBackForwardList;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class WebviewActivity extends Activity {

    WebView webview;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mywebview);         
        Bundle bundle= this.getIntent().getExtras();
        String param1 = bundle.getString("Weburl");

        getDetailWebsite(param1);   

        webview = (WebView) findViewById(R.id.webview);
        webview.setWebViewClient(new HelloWebViewClient());
        webview.getSettings().setJavaScriptEnabled(true);
        webview.getSettings().setBuiltInZoomControls(true);

        loadWebview();

    }

    public void loadWebview()
    {       
        webview.clearView();        

        webview.loadDataWithBaseURL("http://branchenportal-schlitz.de", HttpHelperClass.htmlDetailWebsiteCode, "text/html", "UTF-8", HttpHelperClass.htmlDetailWebsiteCode);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
            webview.goBack();   

            WebBackForwardList mWebBackForwardList = webview.copyBackForwardList();
            String historyUrl = mWebBackForwardList.getItemAtIndex(mWebBackForwardList.getCurrentIndex()).getUrl();

            if(historyUrl.contains("<html>"))
            {               
                loadWebview();
            }

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

    private void getDetailWebsite(String url)
    {   
        try{            
            HttpHelperClass.executeHttpGetDetailWebsite(url,this);

        }catch (Exception ex)
        {
            ex.printStackTrace();           
        }
    }

    private class HelloWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

        @Override
        public void onPageFinished(WebView view, String url) {

            if(url.contains("branchenportal-schlitz.de"))
            {
                view.clearHistory();
            }
            super.onPageFinished(view, url);
        }
    }

    @Override
    protected void onStop() {

        webview.clearCache(true);       
        webview.clearView();
        webview.clearHistory();
        webview.destroy();      
        super.onStop();     
    }


}

有谁知道我做错了什么？提前致谢。关于

Answer 1

好的，我很难解决这个问题，我首先要删除（注释掉）所有代码，然后在公共布尔值onKeyDown（int keyCode，KeyEvent事件）下面。然后你可以看看它是否在你的onCreate中。但这取决于。

  @Override
 public void onCreate(Bundle savedInstanceState)
 {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.buttons);
     wb = new WebView(this);
     wb.getSettings().setJavaScriptEnabled(true);
     wb.setWebViewClient(new HelloWebViewClient()); 

     final String urlToLoad = "http://www.yourWebsite.com";

     wb.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
     wb.loadUrl(urlToLoad);
 }

从这里开始，然后开始添加额外的代码。

webview每次显示最后一个loadurl（）方法的内容

1 个答案: