| /* |
| * 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.focus; |
| |
| import android.app.Activity; |
| import android.graphics.Point; |
| import android.os.Bundle; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.BaseAdapter; |
| import android.widget.ListView; |
| import android.util.InternalSelectionView; |
| |
| /** |
| * A list of {@link InternalSelectionView}s paramatarized by the number of items, |
| * how many rows in each item, and how tall each item is. |
| */ |
| public class ListOfInternalSelectionViews extends Activity { |
| |
| private ListView mListView; |
| |
| |
| // keys for initializing via Intent params |
| public static final String BUNDLE_PARAM_NUM_ITEMS = "com.google.test.numItems"; |
| public static final String BUNDLE_PARAM_NUM_ROWS_PER_ITEM = "com.google.test.numRowsPerItem"; |
| public static final String BUNDLE_PARAM_ITEM_SCREEN_HEIGHT_FACTOR = "com.google.test.itemScreenHeightFactor"; |
| |
| private int mScreenHeight; |
| |
| private int mNumItems = 5; |
| private int mNumRowsPerItem = 4; |
| private double mItemScreenSizeFactor = 5 / 4; |
| |
| public ListView getListView() { |
| return mListView; |
| } |
| |
| /** |
| * Each item is screen height * this factor tall. |
| */ |
| public double getItemScreenSizeFactor() { |
| return mItemScreenSizeFactor; |
| } |
| |
| /** |
| * @return The number of rows per item. |
| */ |
| public int getNumRowsPerItem() { |
| return mNumRowsPerItem; |
| } |
| |
| /** |
| * @return The number of items in the list. |
| */ |
| public int getNumItems() { |
| return mNumItems; |
| } |
| |
| /** |
| * @param position The position |
| * @return The label (closest thing to a value) for the item at position |
| */ |
| public String getLabelForPosition(int position) { |
| return "position " + position; |
| } |
| |
| /** |
| * Get the currently selected view. |
| */ |
| public InternalSelectionView getSelectedView() { |
| return (InternalSelectionView) getListView().getSelectedView(); |
| } |
| |
| /** |
| * Get the screen height. |
| */ |
| public int getScreenHeight() { |
| return mScreenHeight; |
| } |
| |
| /** |
| * Initialize a bundle suitable for sending as the params of the intent that |
| * launches this activity. |
| * @param numItems The number of items in the list. |
| * @param numRowsPerItem The number of rows per item. |
| * @param itemScreenHeightFactor see {@link #getScreenHeight()} |
| * @return the intialized bundle. |
| */ |
| public static Bundle getBundleFor(int numItems, int numRowsPerItem, double itemScreenHeightFactor) { |
| Bundle bundle = new Bundle(); |
| bundle.putInt(BUNDLE_PARAM_NUM_ITEMS, numItems); |
| bundle.putInt(BUNDLE_PARAM_NUM_ROWS_PER_ITEM, numRowsPerItem); |
| bundle.putDouble(BUNDLE_PARAM_ITEM_SCREEN_HEIGHT_FACTOR, itemScreenHeightFactor); |
| return bundle; |
| } |
| |
| @Override |
| protected void onCreate(Bundle icicle) { |
| super.onCreate(icicle); |
| |
| Point size = new Point(); |
| getWindowManager().getDefaultDisplay().getSize(size); |
| mScreenHeight = size.y; |
| |
| Bundle extras = getIntent().getExtras(); |
| if (extras != null) { |
| initFromBundle(extras); |
| } |
| |
| mListView = new ListView(this); |
| mListView.setLayoutParams(new ViewGroup.LayoutParams( |
| ViewGroup.LayoutParams.MATCH_PARENT, |
| ViewGroup.LayoutParams.MATCH_PARENT)); |
| mListView.setDrawSelectorOnTop(false); |
| mListView.setAdapter(new MyAdapter()); |
| mListView.setItemsCanFocus(true); |
| setContentView(mListView); |
| } |
| |
| private void initFromBundle(Bundle icicle) { |
| |
| int numItems = icicle.getInt(BUNDLE_PARAM_NUM_ITEMS, -1); |
| if (numItems != -1) { |
| mNumItems = numItems; |
| } |
| int numRowsPerItem = icicle.getInt(BUNDLE_PARAM_NUM_ROWS_PER_ITEM, -1); |
| if (numRowsPerItem != -1) { |
| mNumRowsPerItem = numRowsPerItem; |
| } |
| double screenHeightFactor = icicle.getDouble(BUNDLE_PARAM_ITEM_SCREEN_HEIGHT_FACTOR, -1.0); |
| if (screenHeightFactor > 0) { |
| mItemScreenSizeFactor = screenHeightFactor; |
| } |
| } |
| |
| private class MyAdapter extends BaseAdapter { |
| |
| public int getCount() { |
| return mNumItems; |
| } |
| |
| public Object getItem(int position) { |
| return getLabelForPosition(position); |
| } |
| |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| public View getView(int position, View convertView, ViewGroup parent) { |
| InternalSelectionView item = |
| new InternalSelectionView( |
| parent.getContext(), |
| mNumRowsPerItem, |
| getLabelForPosition(position)); |
| item.setDesiredHeight((int) (mScreenHeight * mItemScreenSizeFactor)); |
| return item; |
| } |
| } |
| } |