好了，所以我想我已经回答了你的问题here

Ok so I thought I've already answered to your question here

此外，你似乎想复制类似的问题here和here

Besides, you seem to like to replicate similar questions here and here

就像我已经告诉你了，你可以通过创建一个接受URL作为意向额外的活动acomplish这一点。

Like I've already told you, you can acomplish this by creating an activity that accepts an url as an extra of an intent.

以你的code为基地启动：

Taking your code as a base start:

Browser.java

Browser.java

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


public class Browser extends Activity {

    private WebView webview;

    private String URL;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.browser);

        Bundle extras = getIntent().getExtras();

        if (extras == null) {

            URL = "http://www.evonytools.org/";

        } else {

            this.URL = extras.getString("URL");
        }

        getWebView();

    }

    public void getWebView() {

        webview = (WebView) findViewById(R.id.webview);
        webview.setWebViewClient(new HelloWebViewClient());
        webview.getSettings().setJavaScriptEnabled(true);
        webview.loadUrl(this.URL);
    }

    private class HelloWebViewClient extends WebViewClient {

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

    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
        webview.goBack();
        return true;
        }
    return super.onKeyDown(keyCode, event);
    }
}

布局/ broswer.xml

layout/broswer.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
>
    <WebView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/webview"
    />
</LinearLayout>

Main.java

Main.java

public class Main extends TabActivity{

        private TabHost tabHost;

        private EditText addressBar;

        private final static String DEFAULT_URL = "http://www.evonytools.org/";

        private int z = 0;

        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.tabs_main);

            this.tabHost = getTabHost();  // The activity TabHost
            this.addressBar = (EditText) findViewById(R.id.address_bar);
            this.addressBar.setText(DEFAULT_URL);


            ImageButton addBtn = (ImageButton) findViewById(R.id.add_btn);

            addBtn.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {

                    addMethod();    
                }
            });

            Intent openBrowser = new Intent(); 
            openBrowser.setClass(this, Browser.class);
            openBrowser.putExtra("URL", DEFAULT_URL);
            tabHost.addTab(tabHost.newTabSpec("Main").setIndicator(getHost(DEFAULT_URL)).setContent(openBrowser));

        }




        private void addMethod() {

            String webSiteURL = validateURL(addressBar.getText().toString().trim());
            String webSiteName = getHost(webSiteURL);

            Intent openBrowser = new Intent(); 
            openBrowser.setClass(this, Browser.class);
            openBrowser.putExtra("URL", webSiteURL);

            tabHost.addTab(tabHost.newTabSpec(webSiteName + Integer.toString(z)).setIndicator(webSiteName).setContent(openBrowser));

            ++z;
        }

        private void deleteMethod() {

            // Since we can't really delete a TAB
            // We hide it

            int position = tabHost.getCurrentTab();

            if (position != 0 ) {

                tabHost.getCurrentTabView().setVisibility(8);
                tabHost.setCurrentTab(0);
            }
        }

        // Inflates menu when "menu Key" is pressed
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            MenuInflater inflater = getMenuInflater();
            inflater.inflate(R.menu.menu, menu);
            return true;
        }

        // This method is called once the menu is selected
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {


            switch (item.getItemId()) {

                case R.id.add:

                    addMethod();

                    break;

                case R.id.delete:

                    deleteMethod();

                    break;
            }
            return true;
        }

        private String validateURL(String url) {

            StringBuffer urlB = new StringBuffer();

            // checks if addressBar has a valid URL
            // you can add stuff here in order to validate
            // this is just an example
            if (url.startsWith("http://")) {urlB.append(url);} else {urlB.append("http://");}

            try {
                URL urlTry = new URL(urlB.toString());

                return urlB.toString();

            } catch (MalformedURLException e) {

                return "http://www.google.com/";
            }   
        }

        private String getHost(String url) {

            try {

                URL urlTry = new URL(url);

                return urlTry.getHost().replace("www.", "").replace(".com", "").replace(".org", "").replace(".net", "");

            } catch (MalformedURLException e) {

                return "Browser";
            }
        }
}

tabs_main.xml

tabs_main.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:padding="5dp">
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:tag="tabPane"
             />
        <RelativeLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
            <EditText
                android:id="@+id/address_bar"
                android:layout_width="270px"
                android:layout_height="50px"
                android:layout_alignParentLeft="true"
                android:layout_alignParentTop="true"
            />
            <ImageButton
                android:id="@+id/add_btn"
                android:layout_width="50px"
                android:layout_height="50px"
                android:src="@android:drawable/ic_menu_add"
                android:background="@android:color/transparent"
                android:layout_toRightOf="@id/address_bar"
            />

        </RelativeLayout>
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="2dp" />
    </LinearLayout>    

希望我没有做功课。