| /* |
| * 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.listview; |
| |
| import android.content.Context; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.AbsListView; |
| import android.widget.TextView; |
| |
| import android.util.ListScenario; |
| |
| /** |
| * A list where each item expands by 1.5 when selected. |
| */ |
| public class ListItemsExpandOnSelection extends ListScenario { |
| |
| |
| @Override |
| protected void init(Params params) { |
| params.setNumItems(10) |
| .setItemScreenSizeFactor(1.0/5); |
| } |
| |
| |
| @Override |
| protected View createView(int position, ViewGroup parent, int desiredHeight) { |
| TextView result = new ExpandWhenSelectedView(parent.getContext(), desiredHeight); |
| result.setHeight(desiredHeight); |
| result.setFocusable(mItemsFocusable); |
| result.setText(getValueAtPosition(position)); |
| final AbsListView.LayoutParams lp = new AbsListView.LayoutParams( |
| ViewGroup.LayoutParams.MATCH_PARENT, |
| ViewGroup.LayoutParams.WRAP_CONTENT); |
| result.setLayoutParams(lp); |
| return result; |
| } |
| |
| |
| @Override |
| public View convertView(int position, View convertView, ViewGroup parent) { |
| ((ExpandWhenSelectedView)convertView).setText(getValueAtPosition(position)); |
| return convertView; |
| } |
| |
| |
| static private class ExpandWhenSelectedView extends TextView { |
| |
| private final int mDesiredHeight; |
| |
| public ExpandWhenSelectedView(Context context, int desiredHeight) { |
| super(context); |
| mDesiredHeight = desiredHeight; |
| } |
| |
| @Override |
| public void setSelected(boolean selected) { |
| super.setSelected(selected); |
| if (selected) { |
| setHeight((int) (mDesiredHeight * 1.5)); |
| } else { |
| setHeight(mDesiredHeight); |
| } |
| } |
| } |
| } |