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Android example source code file (ListItemsExpandOnSelection.java)
The ListItemsExpandOnSelection.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.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); } } } } Other Android examples (source code examples)Here is a short list of links related to this Android ListItemsExpandOnSelection.java source code file: |
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