Android Open Source - introToDroid4ed Menu Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.introtoandroid.viewsamples;
// w w  w .j av  a2 s.com
import java.util.HashMap;
import java.util.Map;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public abstract class MenuActivity extends ListActivity {
  private Map<String, Object> actions = new HashMap<String, Object>();

  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    String key = (String) l.getItemAtPosition(position);
    startActivity((Intent) actions.get(key));
  }
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    prepareMenu();

    String[] keys = actions.keySet().toArray(new String[actions.keySet().size()]);

    setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, keys));
  }
  
  public void addMenuItem(String label, Class<?> cls){
    actions.put(label, new Intent(this, cls  ));
  }
  
  abstract void prepareMenu();
}

Java Source Code List

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