| /* |
| * Copyright (C) 2008 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 com.android.frameworktest.listview; |
| |
| import com.android.frameworktest.R; |
| |
| import android.app.ListActivity; |
| import android.content.Context; |
| import android.os.Bundle; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.widget.ArrayAdapter; |
| |
| |
| /** |
| * Tests using an empty view with a list */ |
| public class ListWithEmptyView extends ListActivity { |
| |
| private class CarefulAdapter<T> extends ArrayAdapter<T> { |
| |
| public CarefulAdapter(Context context, int textViewResourceId) { |
| super(context, textViewResourceId); |
| // TODO Auto-generated constructor stub |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| if (position < 0 || position >= this.getCount()) { |
| throw new ArrayIndexOutOfBoundsException(); |
| } |
| return super.getItemId(position); |
| } |
| |
| |
| } |
| |
| public static final int MENU_ADD = Menu.FIRST + 1; |
| public static final int MENU_REMOVE = Menu.FIRST + 2; |
| |
| private CarefulAdapter<String> mAdapter; |
| |
| private int mNextItem = 0; |
| |
| private View mEmptyView; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mAdapter = new CarefulAdapter<String>(this, |
| android.R.layout.simple_list_item_1); |
| setContentView(R.layout.list_with_empty_view); |
| setListAdapter(mAdapter); |
| |
| mEmptyView = findViewById(R.id.empty); |
| getListView().setEmptyView(mEmptyView); |
| } |
| |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| super.onCreateOptionsMenu(menu); |
| menu.add(0, MENU_ADD, 0, R.string.menu_add) |
| .setIcon(android.R.drawable.ic_menu_add); |
| menu.add(0, MENU_REMOVE, 0, R.string.menu_remove) |
| .setIcon(android.R.drawable.ic_menu_delete); |
| return true; |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| switch (item.getItemId()) { |
| case MENU_ADD: |
| String str = "Item + " + mNextItem++; |
| mAdapter.add(str); |
| return true; |
| case MENU_REMOVE: |
| if (mAdapter.getCount() > 0) { |
| mAdapter.remove(mAdapter.getItem(0)); |
| } |
| return true; |
| } |
| |
| return super.onOptionsItemSelected(item); |
| } |
| |
| public View getEmptyView() { |
| return mEmptyView; |
| } |
| |
| } |