1.解析网站并显示

因为要处理网页读取，需要开启线程，并在UI上更新，则要使用handler

注意Handler导入的是os包

下面是MainActivity

private WebView webView;
    private WebView webView;
    private Handler handler=new Handler();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_http_url_connection);
        webView=(WebView)findViewById(R.id.webview);
        
        new HttpThread("http://www.baidu.com",handler,webView).start();
        
    }

public class HttpThread extends Thread {
    private String url=null;
    private Handler handler;
    private WebView webView;
    StringBuffer sb;

    public HttpThread(String url,Handler handler,WebView webView){
        this.url=url;
        this.handler=handler;
        this.webView&#