| /* |
| * 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.widget.gridview; |
| |
| import android.view.KeyEvent; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.BaseAdapter; |
| import android.widget.GridView; |
| import android.widget.ListAdapter; |
| |
| import android.util.GridScenario; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * A grid with vertical spacing between rows |
| */ |
| public class GridDelete extends GridScenario { |
| @Override |
| protected void init(Params params) { |
| params.setStartingSelectionPosition(-1) |
| .setMustFillScreen(false) |
| .setNumItems(1001) |
| .setNumColumns(4) |
| .setItemScreenSizeFactor(0.20) |
| .setVerticalSpacing(20); |
| } |
| |
| |
| |
| @Override |
| protected ListAdapter createAdapter() { |
| return new DeleteAdapter(getInitialNumItems()); |
| } |
| |
| |
| |
| |
| @Override |
| public boolean onKeyDown(int keyCode, KeyEvent event) { |
| if (keyCode == KeyEvent.KEYCODE_DEL) { |
| GridView g = getGridView(); |
| ((DeleteAdapter)g.getAdapter()).deletePosition(g.getSelectedItemPosition()); |
| return true; |
| } else { |
| return super.onKeyDown(keyCode, event); |
| } |
| } |
| |
| |
| |
| |
| private class DeleteAdapter extends BaseAdapter { |
| |
| private ArrayList<Integer> mData; |
| |
| public DeleteAdapter(int initialNumItems) { |
| super(); |
| mData = new ArrayList<Integer>(initialNumItems); |
| |
| int i; |
| for (i=0; i<initialNumItems; ++i) { |
| mData.add(new Integer(10000 + i)); |
| } |
| |
| } |
| |
| public void deletePosition(int selectedItemPosition) { |
| if (selectedItemPosition >=0 && selectedItemPosition < mData.size()) { |
| mData.remove(selectedItemPosition); |
| notifyDataSetChanged(); |
| } |
| |
| } |
| |
| public int getCount() { |
| return mData.size(); |
| } |
| |
| public Object getItem(int position) { |
| return mData.get(position); |
| } |
| |
| public long getItemId(int position) { |
| return mData.get(position); |
| } |
| |
| public View getView(int position, View convertView, ViewGroup parent) { |
| int desiredHeight = getDesiredItemHeight(); |
| return createView(mData.get(position), parent, desiredHeight); |
| } |
| } |
| } |