Hello Android Examples: Android : Implementing long click tutorial

How to to respond on a long click in Android!
If you wanna the application to respond on a long click you have to implement Context Menu.
Here is an example how to create and register Context Menu.
Responding to an action is left empty to implement what needed.

I did use some code of the previous blog: Android : The scroll list. If you need the activity which started this frame go to this blog.

This is the result of the following code.


package com.mamutek.context.menu.android;

import java.util.ArrayList;

import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.RadioButton;
import android.widget.TextView;

/**
 * @author Peter Gostincar
 */

public class ScrollFragment extends ListFragment{

  private ArrayList mItems;

  @Override
  public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    getActivity().setTitle("Title");
    mItems = createSomeItems();

    CostumiseAdapter adapter = new CostumiseAdapter(mItems);
    setListAdapter(adapter);
  }
  
  
  /** implementing ContextMenu */
  @Override
  public void onCreateContextMenu(ContextMenu menu,  View view,
      ContextMenuInfo menuInfo){
    getActivity().getMenuInflater().inflate(R.menu.context_resource, menu);
  }
  
  /** registering ContextMenu*/
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState){
    View view = super.onCreateView(inflater, container, savedInstanceState);
    
    ListView list = (ListView)view.findViewById(android.R.id.list);
    registerForContextMenu(list);
    
    return view;
  }
  
  /**responding to Click*/
  @Override
  public boolean onContextItemSelected(MenuItem item){
    AdapterContextMenuInfo info = (AdapterContextMenuInfo)item.getMenuInfo();
    int position = info.position;
    CostumiseAdapter adapter = (CostumiseAdapter)getListAdapter();
    ImagineItem i = adapter.getItem(position);
    
    //TODO operation that need to be done
    int id = item.getItemId();
    if(id == R.id.item_edit){
      //do what it's need to be done
    }
    
    return super.onContextItemSelected(item);
  }
  

  private ArrayList createSomeItems() {
    ArrayList ret  = new ArrayList();
    for(int i = 0; i < 30; i++){
      ret.add(new ImagineItem(i));
    }
    return ret;
  }
  
  /**
   * @author Peter Gostincar
   * costumise adapter to show more than just Strings
   */
  private class CostumiseAdapter extends ArrayAdapter{

    public CostumiseAdapter(ArrayList items) {
      super(getActivity(), 0, items);
    }
    
    @Override
    public View getView(int position, View convertView, ViewGroup parent){
      if(convertView == null){
        convertView = getActivity().getLayoutInflater()
            .inflate(R.layout.scroll_fragment, null);
      }
      
      ImagineItem item = getItem(position);
      
      TextView text = (TextView) convertView.findViewById(R.id.text_view);
      text.setText(item.mString);
      
      RadioButton b1 = (RadioButton) convertView.findViewById(R.id.radio_b1);
      b1.setChecked(item.mB1);
      
      RadioButton b2 = (RadioButton) convertView.findViewById(R.id.radio_b2);
      b2.setChecked(item.mB2);
      
      CheckBox cB = (CheckBox) convertView.findViewById(R.id.check_box);
      cB.setChecked(item.mB2);

      return convertView;
    }
  }

  /**
   * @author Peter Gostincar
   * class just for creating list of objects
   */
  private class ImagineItem{
    
    String mString = "Tralalal: ";
    boolean mCheckBox;
    boolean mB1;
    boolean mB2;
    
    public ImagineItem(int i) {
      mString += i;
      if(i % 2 == 0){
        mCheckBox = true;
      }
      int x = (int) (Math.random()*3+1);
      if(x == 1)
        mB1 = true;
      if(x == 2)
        mB2 = true;
    }
  }
}

menu/context_resource.xml

<?xml version="1.0" encoding="utf-8"?>

<item

android:id="@+id/item_edit"

android:icon="@android:drawable/ic_menu_edit"

android:title="@string/update"

</menu>

activity_main.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:id="@+id/fragmentContainer"

android:layout_width="match_parent"

android:layout_height="match_parent" />

scroll_fragmnet.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent" >

<CheckBox

android:id="@+id/check_box"

android:layout_width="wrap_content"