以下是一个使用Android的示例代码，用于在页面刷新后获取HTTP内容的解决方法：

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    private TextView responseText;
    private Button refreshButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        responseText = findViewById(R.id.response_text);
        refreshButton = findViewById(R.id.refresh_button);

        refreshButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 在按钮点击事件中执行获取HTTP内容的操作
                new HttpGetTask().execute();
            }
        });
    }

    private class HttpGetTask extends AsyncTask {

        @Override
        protected String doInBackground(Void... voids) {
            HttpURLConnection urlConnection = null;
            BufferedReader reader = null;
            String result = null;

            try {
                URL url = new URL("http://example.com"); // 替换为实际的URL地址
                urlConnection = (HttpURLConnection) url.openConnection();
                urlConnection.setRequestMethod("GET");
                urlConnection.connect();

                InputStream inputStream = urlConnection.getInputStream();
                StringBuilder builder = new StringBuilder();
                reader = new BufferedReader(new InputStreamReader(inputStream));
                String line;
                while ((line = reader.readLine()) != null) {
                    builder.append(line).append("\n");
                }

                result = builder.toString();

            } catch (IOException e) {
                Log.e(TAG, "Error", e);
            } finally {
                if (urlConnection != null) {
                    urlConnection.disconnect();
                }
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (IOException e) {
                        Log.e(TAG, "Error", e);
                    }
                }
            }

            return result;
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            responseText.setText(result); // 将HTTP内容显示在TextView中
        }
    }
}

这个示例中，我们创建了一个HttpGetTask类，继承自AsyncTask，并在doInBackground方法中执行HTTP请求获取内容，在onPostExecute方法中更新UI来显示获取到的内容。点击刷新按钮时，会创建一个HttpGetTask对象并执行execute方法，从而触发HTTP请求和页面刷新的操作。