/* * 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 com.example.android.apis.view;import android.app.Activity;import android.os.Bundle;import android.view.ViewGroup;import android.widget.LinearLayout;/** * {@link android.view.View#requestFocus(int, android.graphics.Rect)} * and * {@link android.view.View#onFocusChanged(boolean, int, android.graphics.Rect)} * work together to give a newly focused item a hint about the most interesting * rectangle of the previously focused view.  The view taking focus can use this * to set an internal selection more appropriate using this rect. * * This Activity excercises that behavior using three adjacent {@link InternalSelectionView} * that report interesting rects when giving up focus, and use interesting rects * when taking focus to best select the internal row to show as selected. * * Were {@link InternalSelectionView} not to override {@link android.view.View#getFocusedRect}, or * {@link android.view.View#onFocusChanged(boolean, int, android.graphics.Rect)}, the focus would * jump to some default internal selection (the top) and not allow for the smooth handoff. */public class InternalSelectionFocus extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        final LinearLayout layout = new LinearLayout(this);        layout.setOrientation(LinearLayout.HORIZONTAL);        layout.setLayoutParams(new ViewGroup.LayoutParams(                ViewGroup.LayoutParams.FILL_PARENT,                ViewGroup.LayoutParams.FILL_PARENT));        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0,                ViewGroup.LayoutParams.FILL_PARENT, 1);        final InternalSelectionView leftColumn = new InternalSelectionView(this, 5, "left column");        leftColumn.setLayoutParams(params);        leftColumn.setPadding(10, 10, 10, 10);        layout.addView(leftColumn);        final InternalSelectionView middleColumn = new InternalSelectionView(this, 5, "middle column");        middleColumn.setLayoutParams(params);        middleColumn.setPadding(10, 10, 10, 10);        layout.addView(middleColumn);        final InternalSelectionView rightColumn = new InternalSelectionView(this, 5, "right column");        rightColumn.setLayoutParams(params);        rightColumn.setPadding(10, 10, 10, 10);        layout.addView(rightColumn);        setContentView(layout);    }}