制作土鳖的浏览器

package test.pp;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.*;

public class testcc extends Activity {
    /** Called when the activity is first created. */
    WebView wv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        wv = (WebView)this.findViewById(R.id.webView1);
        wv.loadUrl("http://www.sina.com.cn");
        wv.setWebViewClient(new HelloWebViewClient());
        
    }
    
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {   //捕捉手机上的返回键，如果按了则不会退出当前的浏览器，而是返回浏览器当前页的前一页
        if ((keyCode == KeyEvent.KEYCODE_BACK) && wv.canGoBack()) {
            wv.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
  
    
    private class HelloWebViewClient extends WebViewClient {   //直观作用是隐藏URL地址栏
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }
    }
}