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Android example source code file (ListContextMenu.java)

This example Android source code file (ListContextMenu.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, cm, content, item, layoutinflater, listcontextmenu, options, os, override, sm, string, subitem, submenu, test, textview, this, thrashlistadapter, ui, view, widget

The ListContextMenu.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.view;

import com.android.frameworks.coretests.R;

import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SubMenu;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.TextView;

/**
 * Exercises context menus in lists
 */
public class ListContextMenu extends ListActivity implements View.OnCreateContextMenuListener
{
    static final String TAG = "ListContextMenu";
    
    ThrashListAdapter mAdapter; 
    
    private class ThrashListAdapter extends BaseAdapter {
        private LayoutInflater mInflater;
        
        private String[] mTitles = new String[100];

        public ThrashListAdapter(Context context) {
            mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            mTitles = new String[100];
            
            int i;
            for (i=0; i<100; i++) {
                mTitles[i] = "[" + i + "]";
            }
        }

        public int getCount() {
            return mTitles.length;
        }

        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            return position;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            TextView view;

            if (convertView == null) {
                view = (TextView) mInflater.inflate(android.R.layout.simple_list_item_1, null);
            } else {
                view = (TextView) convertView;
            }
            view.setText("List item " + mTitles[position]);
            return view;
        }

    }
    
    @Override
    public void onCreate(Bundle icicle) 
    {
        super.onCreate(icicle);
        
        mAdapter = new ThrashListAdapter(this);
        getListView().setOnCreateContextMenuListener(this);
        setListAdapter(mAdapter);
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuItem item = menu.add(0, 0, 0, "Really long menu item name");
        item.setTitleCondensed("Long name");
        item.setIcon(R.drawable.black_square);
        
        SubMenu sm = menu.addSubMenu(0, 0, 0, "The 2nd item, a sub menu").setIcon(R.drawable.black_square_stretchable);
        item = sm.getItem();
        item.setTitleCondensed("Sub menu");
        sm.add(1, 0, 0, "Subitem 1");
        sm.add(1, 0, 0, "Subitem 2");
        sm.add(1, 0, 0, "Subitem 3");
        sm.setGroupCheckable(1, true, true);
        menu.add(0, 0, 0, "Item 3");
        menu.add(0, 0, 0, "Item 4");
        menu.add(0, 0, 0, "Item 5");
        menu.add(0, 0, 0, "Item 6");
        menu.add(0, 0, 0, "Item 7");
        menu.add(0, 0, 0, "Item 8");
        menu.add(0, 0, 0, "Item 9");
        sm = menu.addSubMenu(0, 0, 0, "Item 10 SM");
        sm.add(0, 0, 0, "Subitem 1");
        sm.add(0, 0, 0, "Subitem 2");
        sm.add(0, 0, 0, "Subitem 3");
        sm.add(0, 0, 0, "Subitem 4");
        sm.add(0, 0, 0, "Subitem 5");
        sm.add(0, 0, 0, "Subitem 6");
        sm.add(0, 0, 0, "Subitem 7");
        sm.add(0, 0, 0, "Subitem 8");
        
        return true;
    }

    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo)menuInfo;
        
        String text = ((TextView) info.targetView).getText().toString();
        if (text.contains("[0]")) {
            menu.setHeaderTitle("This is a test of the title and the icon").setHeaderIcon(
                    android.R.drawable.sym_def_app_icon);
        } else if (text.contains("[1]")) {
            menu.setHeaderTitle("This is a test of just the title");
        } else {
            TextView textView = new TextView(this);
            textView.setText("This is a test of a custom View");
            menu.setHeaderView(textView);
        }
        
        menu.add(0, 0, 0, "Test 1");
        SubMenu sm = menu.addSubMenu(0, 0, 0, "Test 1.5 SM");
        sm.add(0, 0, 0, "CM Subitem 1");
        sm.add(0, 0, 0, "CM Subitem 2");
        sm.add(0, 0, 0, "CM Subitem 3");
        menu.add(0, 0, 0, "Test 2");
        menu.add(0, 0, 0, "Test 3");
        menu.add(0, 0, 0, "Test 4");
        menu.add(0, 0, 0, "Test 5");
        menu.add(0, 0, 0, "Test 6");
        menu.add(0, 0, 0, "Test 7");
        menu.add(0, 0, 0, "Test 8");
        menu.add(0, 0, 0, "Test 9");
        menu.add(0, 0, 0, "Test 10");
        menu.add(0, 0, 0, "Test 11");
        menu.add(0, 0, 0, "Test 12");
        menu.add(0, 0, 0, "Test 13");
        menu.add(0, 0, 0, "Test 14");
        menu.add(0, 0, 0, "Test 15");
        menu.add(0, 0, 0, "Test 16");
        menu.add(0, 0, 0, "Test 17");
        menu.add(0, 0, 0, "Test 18");
        menu.add(0, 0, 0, "Test 19");
        menu.add(0, 0, 0, "Test 20");
        menu.add(0, 0, 0, "Test 21");
        menu.add(0, 0, 0, "Test 22");
        menu.add(0, 0, 0, "Test 23");
        menu.add(0, 0, 0, "Test 24");
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        Log.i(TAG, "Options item " + item.toString() + " selected.");
        
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onOptionsMenuClosed(Menu menu) {
        Log.i(TAG, "Options menu closed");
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        Log.i(TAG, "Context item " + item.toString() + " selected.");
        
        return super.onContextItemSelected(item);
    }

    @Override
    public void onContextMenuClosed(Menu menu) {
        Log.i(TAG, "Context menu closed");
    }
    
    
}

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