The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.frameworktest.util; |
| 18 | |
| 19 | import android.app.Activity; |
| 20 | import android.graphics.Rect; |
| 21 | import android.os.Bundle; |
| 22 | import android.view.View; |
| 23 | import android.view.ViewGroup; |
| 24 | import android.view.Window; |
| 25 | import android.widget.AdapterView; |
| 26 | import android.widget.BaseAdapter; |
| 27 | import android.widget.EditText; |
| 28 | import android.widget.LinearLayout; |
| 29 | import android.widget.ListView; |
| 30 | import android.widget.TextView; |
| 31 | import com.google.android.collect.Maps; |
| 32 | |
| 33 | import java.util.ArrayList; |
| 34 | import java.util.HashSet; |
| 35 | import java.util.List; |
| 36 | import java.util.Map; |
| 37 | import java.util.Set; |
| 38 | |
| 39 | /** |
| 40 | * Utility base class for creating various List scenarios. Configurable by the number |
| 41 | * of items, how tall each item should be (in relation to the screen height), and |
| 42 | * what item should start with selection. |
| 43 | */ |
| 44 | public abstract class ListScenario extends Activity { |
| 45 | |
| 46 | private ListView mListView; |
| 47 | private TextView mHeaderTextView; |
| 48 | |
| 49 | private int mNumItems; |
| 50 | protected boolean mItemsFocusable; |
| 51 | |
| 52 | private int mStartingSelectionPosition; |
| 53 | private double mItemScreenSizeFactor; |
| 54 | private Map<Integer, Double> mOverrideItemScreenSizeFactors = Maps.newHashMap(); |
| 55 | |
| 56 | private int mScreenHeight; |
| 57 | |
| 58 | // whether to include a text view above the list |
| 59 | private boolean mIncludeHeader; |
| 60 | |
| 61 | // separators |
| 62 | private Set<Integer> mUnselectableItems = new HashSet<Integer>(); |
| 63 | |
| 64 | private boolean mStackFromBottom; |
| 65 | |
| 66 | private int mClickedPosition = -1; |
| 67 | |
| 68 | private int mLongClickedPosition = -1; |
| 69 | |
| 70 | private int mConvertMisses = 0; |
| 71 | |
| 72 | private int mHeaderViewCount; |
| 73 | private boolean mHeadersFocusable; |
| 74 | |
| 75 | private int mFooterViewCount; |
| 76 | private LinearLayout mLinearLayout; |
| 77 | |
| 78 | public ListView getListView() { |
| 79 | return mListView; |
| 80 | } |
| 81 | |
| 82 | protected int getScreenHeight() { |
| 83 | return mScreenHeight; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Return whether the item at position is selectable (i.e is a separator). |
| 88 | * (external users can access this info using the adapter) |
| 89 | */ |
| 90 | private boolean isItemAtPositionSelectable(int position) { |
| 91 | return !mUnselectableItems.contains(position); |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Better way to pass in optional params than a honkin' paramater list :) |
| 96 | */ |
| 97 | public static class Params { |
| 98 | private int mNumItems = 4; |
| 99 | private boolean mItemsFocusable = false; |
| 100 | private int mStartingSelectionPosition = 0; |
| 101 | private double mItemScreenSizeFactor = 1 / 5; |
| 102 | private Double mFadingEdgeScreenSizeFactor = null; |
| 103 | |
| 104 | private Map<Integer, Double> mOverrideItemScreenSizeFactors = Maps.newHashMap(); |
| 105 | |
| 106 | // separators |
| 107 | private List<Integer> mUnselectableItems = new ArrayList<Integer>(8); |
| 108 | // whether to include a text view above the list |
| 109 | private boolean mIncludeHeader = false; |
| 110 | private boolean mStackFromBottom = false; |
| 111 | public boolean mMustFillScreen = true; |
| 112 | private int mHeaderViewCount; |
| 113 | private boolean mHeaderFocusable = false; |
| 114 | private int mFooterViewCount; |
| 115 | |
| 116 | private boolean mConnectAdapter = true; |
| 117 | |
| 118 | /** |
| 119 | * Set the number of items in the list. |
| 120 | */ |
| 121 | public Params setNumItems(int numItems) { |
| 122 | mNumItems = numItems; |
| 123 | return this; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Set whether the items are focusable. |
| 128 | */ |
| 129 | public Params setItemsFocusable(boolean itemsFocusable) { |
| 130 | mItemsFocusable = itemsFocusable; |
| 131 | return this; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Set the position that starts selected. |
| 136 | * |
| 137 | * @param startingSelectionPosition The selected position within the adapter's data set. |
| 138 | * Pass -1 if you do not want to force a selection. |
| 139 | * @return |
| 140 | */ |
| 141 | public Params setStartingSelectionPosition(int startingSelectionPosition) { |
| 142 | mStartingSelectionPosition = startingSelectionPosition; |
| 143 | return this; |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Set the factor that determines how tall each item is in relation to the |
| 148 | * screen height. |
| 149 | */ |
| 150 | public Params setItemScreenSizeFactor(double itemScreenSizeFactor) { |
| 151 | mItemScreenSizeFactor = itemScreenSizeFactor; |
| 152 | return this; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Override the item screen size factor for a particular item. Useful for |
| 157 | * creating lists with non-uniform item height. |
| 158 | * @param position The position in the list. |
| 159 | * @param itemScreenSizeFactor The screen size factor to use for the height. |
| 160 | */ |
| 161 | public Params setPositionScreenSizeFactorOverride( |
| 162 | int position, double itemScreenSizeFactor) { |
| 163 | mOverrideItemScreenSizeFactors.put(position, itemScreenSizeFactor); |
| 164 | return this; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Set a position as unselectable (a.k.a a separator) |
| 169 | * @param position |
| 170 | * @return |
| 171 | */ |
| 172 | public Params setPositionUnselectable(int position) { |
| 173 | mUnselectableItems.add(position); |
| 174 | return this; |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Set positions as unselectable (a.k.a a separator) |
| 179 | */ |
| 180 | public Params setPositionsUnselectable(int ...positions) { |
| 181 | for (int pos : positions) { |
| 182 | setPositionUnselectable(pos); |
| 183 | } |
| 184 | return this; |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Include a header text view above the list. |
| 189 | * @param includeHeader |
| 190 | * @return |
| 191 | */ |
| 192 | public Params includeHeaderAboveList(boolean includeHeader) { |
| 193 | mIncludeHeader = includeHeader; |
| 194 | return this; |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Sets the stacking direction |
| 199 | * @param stackFromBottom |
| 200 | * @return |
| 201 | */ |
| 202 | public Params setStackFromBottom(boolean stackFromBottom) { |
| 203 | mStackFromBottom = stackFromBottom; |
| 204 | return this; |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Sets whether the sum of the height of the list items must be at least the |
| 209 | * height of the list view. |
| 210 | */ |
| 211 | public Params setMustFillScreen(boolean fillScreen) { |
| 212 | mMustFillScreen = fillScreen; |
| 213 | return this; |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * Set the factor for the fading edge length. |
| 218 | */ |
| 219 | public Params setFadingEdgeScreenSizeFactor(double fadingEdgeScreenSizeFactor) { |
| 220 | mFadingEdgeScreenSizeFactor = fadingEdgeScreenSizeFactor; |
| 221 | return this; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Set the number of header views to appear within the list |
| 226 | */ |
| 227 | public Params setHeaderViewCount(int headerViewCount) { |
| 228 | mHeaderViewCount = headerViewCount; |
| 229 | return this; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Set whether the headers should be focusable. |
| 234 | * @param headerFocusable Whether the headers should be focusable (i.e |
| 235 | * created as edit texts rather than text views). |
| 236 | */ |
| 237 | public Params setHeaderFocusable(boolean headerFocusable) { |
| 238 | mHeaderFocusable = headerFocusable; |
| 239 | return this; |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Set the number of footer views to appear within the list |
| 244 | */ |
| 245 | public Params setFooterViewCount(int footerViewCount) { |
| 246 | mFooterViewCount = footerViewCount; |
| 247 | return this; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Sets whether the {@link ListScenario} will automatically set the |
| 252 | * adapter on the list view. If this is false, the client MUST set it |
| 253 | * manually (this is useful when adding headers to the list view, which |
| 254 | * must be done before the adapter is set). |
| 255 | */ |
| 256 | public Params setConnectAdapter(boolean connectAdapter) { |
| 257 | mConnectAdapter = connectAdapter; |
| 258 | return this; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * How each scenario customizes its behavior. |
| 264 | * @param params |
| 265 | */ |
| 266 | protected abstract void init(Params params); |
| 267 | |
| 268 | /** |
| 269 | * Override this if you want to know when something has been selected (perhaps |
| 270 | * more importantly, that {@link android.widget.AdapterView.OnItemSelectedListener} has |
| 271 | * been triggered). |
| 272 | */ |
| 273 | protected void positionSelected(int positon) { |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Override this if you want to know that nothing is selected. |
| 278 | */ |
| 279 | protected void nothingSelected() { |
| 280 | } |
| 281 | |
| 282 | /** |
| 283 | * Override this if you want to know when something has been clicked (perhaps |
| 284 | * more importantly, that {@link android.widget.AdapterView.OnItemClickListener} has |
| 285 | * been triggered). |
| 286 | */ |
| 287 | protected void positionClicked(int position) { |
| 288 | setClickedPosition(position); |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Override this if you want to know when something has been long clicked (perhaps |
| 293 | * more importantly, that {@link android.widget.AdapterView.OnItemLongClickListener} has |
| 294 | * been triggered). |
| 295 | */ |
| 296 | protected void positionLongClicked(int position) { |
| 297 | setLongClickedPosition(position); |
| 298 | } |
| 299 | |
| 300 | @Override |
| 301 | protected void onCreate(Bundle icicle) { |
| 302 | super.onCreate(icicle); |
| 303 | |
| 304 | // for test stability, turn off title bar |
| 305 | requestWindowFeature(Window.FEATURE_NO_TITLE); |
| 306 | |
| 307 | |
| 308 | mScreenHeight = getWindowManager().getDefaultDisplay().getHeight(); |
| 309 | |
| 310 | final Params params = createParams(); |
| 311 | init(params); |
| 312 | |
| 313 | readAndValidateParams(params); |
| 314 | |
| 315 | |
| 316 | mListView = createListView(); |
| 317 | mListView.setLayoutParams(new ViewGroup.LayoutParams( |
| 318 | ViewGroup.LayoutParams.FILL_PARENT, |
| 319 | ViewGroup.LayoutParams.FILL_PARENT)); |
| 320 | mListView.setDrawSelectorOnTop(false); |
| 321 | |
| 322 | for (int i=0; i<mHeaderViewCount; i++) { |
| 323 | TextView header = mHeadersFocusable ? |
| 324 | new EditText(this) : |
| 325 | new TextView(this); |
| 326 | header.setText("Header: " + i); |
| 327 | mListView.addHeaderView(header); |
| 328 | } |
| 329 | |
| 330 | for (int i=0; i<mFooterViewCount; i++) { |
| 331 | TextView header = new TextView(this); |
| 332 | header.setText("Footer: " + i); |
| 333 | mListView.addFooterView(header); |
| 334 | } |
| 335 | |
| 336 | if (params.mConnectAdapter) { |
| 337 | setAdapter(mListView); |
| 338 | } |
| 339 | |
| 340 | mListView.setItemsCanFocus(mItemsFocusable); |
| 341 | if (mStartingSelectionPosition >= 0) { |
| 342 | mListView.setSelection(mStartingSelectionPosition); |
| 343 | } |
| 344 | mListView.setPadding(0, 0, 0, 0); |
| 345 | mListView.setStackFromBottom(mStackFromBottom); |
| 346 | mListView.setDivider(null); |
| 347 | |
| 348 | mListView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { |
| 349 | public void onItemSelected(AdapterView parent, View v, int position, long id) { |
| 350 | positionSelected(position); |
| 351 | } |
| 352 | |
| 353 | public void onNothingSelected(AdapterView parent) { |
| 354 | nothingSelected(); |
| 355 | } |
| 356 | }); |
| 357 | |
| 358 | mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { |
| 359 | public void onItemClick(AdapterView parent, View v, int position, long id) { |
| 360 | positionClicked(position); |
| 361 | } |
| 362 | }); |
| 363 | |
| 364 | // set the fading edge length porportionally to the screen |
| 365 | // height for test stability |
| 366 | if (params.mFadingEdgeScreenSizeFactor != null) { |
| 367 | mListView.setFadingEdgeLength((int) (params.mFadingEdgeScreenSizeFactor * mScreenHeight)); |
| 368 | } else { |
| 369 | mListView.setFadingEdgeLength((int) ((64.0 / 480) * mScreenHeight)); |
| 370 | } |
| 371 | |
| 372 | if (mIncludeHeader) { |
| 373 | mLinearLayout = new LinearLayout(this); |
| 374 | |
| 375 | mHeaderTextView = new TextView(this); |
| 376 | mHeaderTextView.setText("hi"); |
| 377 | mHeaderTextView.setLayoutParams(new LinearLayout.LayoutParams( |
| 378 | ViewGroup.LayoutParams.FILL_PARENT, |
| 379 | ViewGroup.LayoutParams.WRAP_CONTENT)); |
| 380 | mLinearLayout.addView(mHeaderTextView); |
| 381 | |
| 382 | mLinearLayout.setOrientation(LinearLayout.VERTICAL); |
| 383 | mLinearLayout.setLayoutParams(new ViewGroup.LayoutParams( |
| 384 | ViewGroup.LayoutParams.FILL_PARENT, |
| 385 | ViewGroup.LayoutParams.FILL_PARENT)); |
| 386 | mListView.setLayoutParams((new LinearLayout.LayoutParams( |
| 387 | ViewGroup.LayoutParams.FILL_PARENT, |
| 388 | 0, |
| 389 | 1f))); |
| 390 | |
| 391 | mLinearLayout.addView(mListView); |
| 392 | setContentView(mLinearLayout); |
| 393 | } else { |
| 394 | mLinearLayout = new LinearLayout(this); |
| 395 | mLinearLayout.setOrientation(LinearLayout.VERTICAL); |
| 396 | mLinearLayout.setLayoutParams(new ViewGroup.LayoutParams( |
| 397 | ViewGroup.LayoutParams.FILL_PARENT, |
| 398 | ViewGroup.LayoutParams.FILL_PARENT)); |
| 399 | mListView.setLayoutParams((new LinearLayout.LayoutParams( |
| 400 | ViewGroup.LayoutParams.FILL_PARENT, |
| 401 | 0, |
| 402 | 1f))); |
| 403 | mLinearLayout.addView(mListView); |
| 404 | setContentView(mLinearLayout); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * Returns the LinearLayout containing the ListView in this scenario. |
| 410 | * |
| 411 | * @return The LinearLayout in which the ListView is held. |
| 412 | */ |
| 413 | protected LinearLayout getListViewContainer() { |
| 414 | return mLinearLayout; |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Attaches a long press listener. You can find out which views were clicked by calling |
| 419 | * {@link #getLongClickedPosition()}. |
| 420 | */ |
| 421 | public void enableLongPress() { |
| 422 | mListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { |
| 423 | public boolean onItemLongClick(AdapterView parent, View v, int position, long id) { |
| 424 | positionLongClicked(position); |
| 425 | return true; |
| 426 | } |
| 427 | }); |
| 428 | } |
| 429 | |
| 430 | /** |
| 431 | * @return The newly created ListView widget. |
| 432 | */ |
| 433 | protected ListView createListView() { |
| 434 | return new ListView(this); |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * @return The newly created Params object. |
| 439 | */ |
| 440 | protected Params createParams() { |
| 441 | return new Params(); |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Sets an adapter on a ListView. |
| 446 | * |
| 447 | * @param listView The ListView to set the adapter on. |
| 448 | */ |
| 449 | protected void setAdapter(ListView listView) { |
| 450 | listView.setAdapter(new MyAdapter()); |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * Read in and validate all of the params passed in by the scenario. |
| 455 | * @param params |
| 456 | */ |
| 457 | protected void readAndValidateParams(Params params) { |
| 458 | if (params.mMustFillScreen ) { |
| 459 | double totalFactor = 0.0; |
| 460 | for (int i = 0; i < params.mNumItems; i++) { |
| 461 | if (params.mOverrideItemScreenSizeFactors.containsKey(i)) { |
| 462 | totalFactor += params.mOverrideItemScreenSizeFactors.get(i); |
| 463 | } else { |
| 464 | totalFactor += params.mItemScreenSizeFactor; |
| 465 | } |
| 466 | } |
| 467 | if (totalFactor < 1.0) { |
| 468 | throw new IllegalArgumentException("list items must combine to be at least " + |
| 469 | "the height of the screen. this is not the case with " + params.mNumItems |
| 470 | + " items and " + params.mItemScreenSizeFactor + " screen factor and " + |
| 471 | "screen height of " + mScreenHeight); |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | mNumItems = params.mNumItems; |
| 476 | mItemsFocusable = params.mItemsFocusable; |
| 477 | mStartingSelectionPosition = params.mStartingSelectionPosition; |
| 478 | mItemScreenSizeFactor = params.mItemScreenSizeFactor; |
| 479 | |
| 480 | mOverrideItemScreenSizeFactors.putAll(params.mOverrideItemScreenSizeFactors); |
| 481 | |
| 482 | mUnselectableItems.addAll(params.mUnselectableItems); |
| 483 | mIncludeHeader = params.mIncludeHeader; |
| 484 | mStackFromBottom = params.mStackFromBottom; |
| 485 | mHeaderViewCount = params.mHeaderViewCount; |
| 486 | mHeadersFocusable = params.mHeaderFocusable; |
| 487 | mFooterViewCount = params.mFooterViewCount; |
| 488 | } |
| 489 | |
| 490 | public final String getValueAtPosition(int position) { |
| 491 | return isItemAtPositionSelectable(position) |
| 492 | ? |
| 493 | "position " + position: |
| 494 | "------- " + position; |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * @return The height that will be set for a particular position. |
| 499 | */ |
| 500 | public int getHeightForPosition(int position) { |
| 501 | int desiredHeight = (int) (mScreenHeight * mItemScreenSizeFactor); |
| 502 | if (mOverrideItemScreenSizeFactors.containsKey(position)) { |
| 503 | desiredHeight = (int) (mScreenHeight * mOverrideItemScreenSizeFactors.get(position)); |
| 504 | } |
| 505 | return desiredHeight; |
| 506 | } |
| 507 | |
| 508 | |
| 509 | /** |
| 510 | * @return The contents of the header above the list. |
| 511 | * @throws IllegalArgumentException if there is no header. |
| 512 | */ |
| 513 | public final String getHeaderValue() { |
| 514 | if (!mIncludeHeader) { |
| 515 | throw new IllegalArgumentException("no header above list"); |
| 516 | } |
| 517 | return mHeaderTextView.getText().toString(); |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * @param value What to put in the header text view |
| 522 | * @throws IllegalArgumentException if there is no header. |
| 523 | */ |
| 524 | protected final void setHeaderValue(String value) { |
| 525 | if (!mIncludeHeader) { |
| 526 | throw new IllegalArgumentException("no header above list"); |
| 527 | } |
| 528 | mHeaderTextView.setText(value); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Create a view for a list item. Override this to create a custom view beyond |
| 533 | * the simple focusable / unfocusable text view. |
| 534 | * @param position The position. |
| 535 | * @param parent The parent |
| 536 | * @param desiredHeight The height the view should be to respect the desired item |
| 537 | * to screen height ratio. |
| 538 | * @return a view for the list. |
| 539 | */ |
| 540 | protected View createView(int position, ViewGroup parent, int desiredHeight) { |
| 541 | return ListItemFactory.text(position, parent.getContext(), getValueAtPosition(position), |
| 542 | desiredHeight); |
| 543 | } |
| 544 | |
| 545 | /** |
| 546 | * Convert a non-null view. |
| 547 | */ |
| 548 | public View convertView(int position, View convertView, ViewGroup parent) { |
| 549 | return ListItemFactory.convertText(convertView, getValueAtPosition(position), position); |
| 550 | } |
| 551 | |
| 552 | public void setClickedPosition(int clickedPosition) { |
| 553 | mClickedPosition = clickedPosition; |
| 554 | } |
| 555 | |
| 556 | public int getClickedPosition() { |
| 557 | return mClickedPosition; |
| 558 | } |
| 559 | |
| 560 | public void setLongClickedPosition(int longClickedPosition) { |
| 561 | mLongClickedPosition = longClickedPosition; |
| 562 | } |
| 563 | |
| 564 | public int getLongClickedPosition() { |
| 565 | return mLongClickedPosition; |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * Have a child of the list view call {@link View#requestRectangleOnScreen(android.graphics.Rect)}. |
| 570 | * @param childIndex The index into the viewgroup children (i.e the children that are |
| 571 | * currently visible). |
| 572 | * @param rect The rectangle, in the child's coordinates. |
| 573 | */ |
| 574 | public void requestRectangleOnScreen(int childIndex, final Rect rect) { |
| 575 | final View child = getListView().getChildAt(childIndex); |
| 576 | |
| 577 | child.post(new Runnable() { |
| 578 | public void run() { |
| 579 | child.requestRectangleOnScreen(rect); |
| 580 | } |
| 581 | }); |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * Return an item type for the specified position in the adapter. Override if your |
| 586 | * adapter creates more than one type. |
| 587 | */ |
| 588 | public int getItemViewType(int position) { |
| 589 | return 0; |
| 590 | } |
| 591 | |
| 592 | /** |
| 593 | * Return an the number of types created by the adapter. Override if your |
| 594 | * adapter creates more than one type. |
| 595 | */ |
| 596 | public int getViewTypeCount() { |
| 597 | return 1; |
| 598 | } |
| 599 | |
| 600 | /** |
| 601 | * @return The number of times convertView failed |
| 602 | */ |
| 603 | public int getConvertMisses() { |
| 604 | return mConvertMisses; |
| 605 | } |
| 606 | |
| 607 | private class MyAdapter extends BaseAdapter { |
| 608 | |
| 609 | public int getCount() { |
| 610 | return mNumItems; |
| 611 | } |
| 612 | |
| 613 | public Object getItem(int position) { |
| 614 | return getValueAtPosition(position); |
| 615 | } |
| 616 | |
| 617 | public long getItemId(int position) { |
| 618 | return position; |
| 619 | } |
| 620 | |
| 621 | @Override |
| 622 | public boolean areAllItemsEnabled() { |
| 623 | return mUnselectableItems.isEmpty(); |
| 624 | } |
| 625 | |
| 626 | @Override |
| 627 | public boolean isEnabled(int position) { |
| 628 | return isItemAtPositionSelectable(position); |
| 629 | } |
| 630 | |
| 631 | public View getView(int position, View convertView, ViewGroup parent) { |
| 632 | View result = null; |
| 633 | if (position >= mNumItems || position < 0) { |
| 634 | throw new IllegalStateException("position out of range for adapter!"); |
| 635 | } |
| 636 | |
| 637 | if (convertView != null) { |
| 638 | result = convertView(position, convertView, parent); |
| 639 | if (result == null) { |
| 640 | mConvertMisses++; |
| 641 | } |
| 642 | } |
| 643 | |
| 644 | if (result == null) { |
| 645 | int desiredHeight = getHeightForPosition(position); |
| 646 | result = createView(position, parent, desiredHeight); |
| 647 | } |
| 648 | return result; |
| 649 | } |
| 650 | |
| 651 | @Override |
| 652 | public int getItemViewType(int position) { |
| 653 | return ListScenario.this.getItemViewType(position); |
| 654 | } |
| 655 | |
| 656 | @Override |
| 657 | public int getViewTypeCount() { |
| 658 | return ListScenario.this.getViewTypeCount(); |
| 659 | } |
| 660 | |
| 661 | } |
| 662 | } |