android 读取远程html内容

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
private EditText pathText;
private TextView codeView;

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

pathText = (EditText) this.findViewById(R.id.pagepath);
codeView = (TextView) this.findViewById(R.id.codeView);
Button button = (Button) this.findViewById(R.id.button);
button.setOnClickListener(new ButtonClickListener());
}

private final class ButtonClickListener implements View.OnClickListener{

public void onClick(View v) {
String path = pathText.getText().toString();
try{
String html = getHtml(path);
codeView.setText(html);
}catch (Exception e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), R.string.error, 1).show();
}
}

}

public  byte[] read(InputStream inStream) throws Exception{
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while( (len = inStream.read(buffer)) != -1){
outStream.write(buffer, 0, len);
}
inStream.close();
return outStream.toByteArray();
}

public  String getHtml(String path) throws Exception{
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setRequestMethod("GET");
if(conn.getResponseCode() == 200){
InputStream inStream = conn.getInputStream();
byte[] data = StreamTool.read(inStream);
String html = new String(data, "UTF-8");
return html;
}
return null;
}
}