Android ปรึกษาเรื่องการดึงไฟล์ text จาก webs server มาอ่านใน android คับ

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		TextView text1 = (TextView) findViewById(R.id.textView1);
		
		DefaultHttpClient httpclient = new DefaultHttpClient();
		
		HttpGet httppost = new HttpGet("http://10.200.1.2/file1.txt");
		
		HttpResponse response;
		StringBuilder total= new StringBuilder();
		try {
			response = httpclient.execute(httppost);
			HttpEntity ht = response.getEntity();
			BufferedHttpEntity buf = new BufferedHttpEntity(ht);
			InputStream is = buf.getContent();
			BufferedReader r = new BufferedReader(new InputStreamReader(is));
	
	        String line;
	        while ((line = r.readLine()) != null) {
	            total.append(line + "\n");
	        }

	        text1.setText(total);
	       
		}catch(Exception e) {
		}
		//text1.setText(total);
	}