SimpleContentActivity.java

package com.commonsware.empublite;

import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;

public class SimpleContentActivity extends Activity {
  public static final String EXTRA_FILE = "file";

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (getFragmentManager().findFragmentById(android.R.id.content)==null) {
      String file=getIntent().getStringExtra(EXTRA_FILE);
      Fragment f=SimpleContentFragment.newInstance(file);

      getFragmentManager().beginTransaction()
        .add(android.R.id.content, f).commit();
    }
  }
}