private EditText et;    private TextView tv;    HttpClient client;        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        et=(EditText) findViewById(R.id.et);        tv=(TextView) findViewById(R.id.tv);        client=new DefaultHttpClient();        findViewById(R.id.btn).setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                readNet("http://www.cnblogs.com/"+et.getText());                            }        });    }            public void readNet(String url){        new AsyncTask
     
      () {            @Override            protected String doInBackground(String... params) {                String urlString=params[0];                HttpGet get=new HttpGet(urlString);                try {                    HttpResponse response=client.execute(get);                    String v=EntityUtils.toString( response.getEntity());                    return v;                } catch (Exception e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }                return null;            }            @Override            protected void onPostExecute(String result) {                tv.setText(result);            }                    }.execute(url);    }
     

效果图  自己博客：