ResolverActivity.java revision 588dd2a3d67435652545645bca9562c066561cda
1/* 2 * Copyright (C) 2008 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 17package com.android.internal.app; 18 19import android.os.AsyncTask; 20import com.android.internal.R; 21import com.android.internal.content.PackageMonitor; 22 23import android.app.ActivityManager; 24import android.app.ActivityManagerNative; 25import android.app.AppGlobals; 26import android.content.ComponentName; 27import android.content.Context; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.ActivityInfo; 31import android.content.pm.IPackageManager; 32import android.content.pm.LabeledIntent; 33import android.content.pm.PackageManager; 34import android.content.pm.PackageManager.NameNotFoundException; 35import android.content.pm.ResolveInfo; 36import android.content.res.Resources; 37import android.graphics.drawable.Drawable; 38import android.net.Uri; 39import android.os.Bundle; 40import android.os.PatternMatcher; 41import android.os.RemoteException; 42import android.os.UserHandle; 43import android.util.Log; 44import android.view.LayoutInflater; 45import android.view.View; 46import android.view.ViewGroup; 47import android.widget.AdapterView; 48import android.widget.BaseAdapter; 49import android.widget.Button; 50import android.widget.ImageView; 51import android.widget.ListView; 52import android.widget.TextView; 53 54import java.util.ArrayList; 55import java.util.Collections; 56import java.util.HashSet; 57import java.util.Iterator; 58import java.util.List; 59import java.util.Set; 60 61/** 62 * This activity is displayed when the system attempts to start an Intent for 63 * which there is more than one matching activity, allowing the user to decide 64 * which to go to. It is not normally used directly by application developers. 65 */ 66public class ResolverActivity extends AlertActivity implements AdapterView.OnItemClickListener { 67 private static final String TAG = "ResolverActivity"; 68 private static final boolean DEBUG = false; 69 70 private int mLaunchedFromUid; 71 private ResolveListAdapter mAdapter; 72 private PackageManager mPm; 73 private boolean mAlwaysUseOption; 74 private boolean mShowExtended; 75 private ListView mListView; 76 private Button mAlwaysButton; 77 private Button mOnceButton; 78 private int mIconDpi; 79 private int mIconSize; 80 private int mMaxColumns; 81 private int mLastSelected = ListView.INVALID_POSITION; 82 83 private boolean mRegistered; 84 private final PackageMonitor mPackageMonitor = new PackageMonitor() { 85 @Override public void onSomePackagesChanged() { 86 mAdapter.handlePackagesChanged(); 87 } 88 }; 89 90 private Intent makeMyIntent() { 91 Intent intent = new Intent(getIntent()); 92 // The resolver activity is set to be hidden from recent tasks. 93 // we don't want this attribute to be propagated to the next activity 94 // being launched. Note that if the original Intent also had this 95 // flag set, we are now losing it. That should be a very rare case 96 // and we can live with this. 97 intent.setFlags(intent.getFlags()&~Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 98 return intent; 99 } 100 101 @Override 102 protected void onCreate(Bundle savedInstanceState) { 103 onCreate(savedInstanceState, makeMyIntent(), 104 getResources().getText(com.android.internal.R.string.whichApplication), 105 null, null, true); 106 } 107 108 protected void onCreate(Bundle savedInstanceState, Intent intent, 109 CharSequence title, Intent[] initialIntents, List<ResolveInfo> rList, 110 boolean alwaysUseOption) { 111 setTheme(R.style.Theme_DeviceDefault_Light_Dialog_Alert); 112 super.onCreate(savedInstanceState); 113 try { 114 mLaunchedFromUid = ActivityManagerNative.getDefault().getLaunchedFromUid( 115 getActivityToken()); 116 } catch (RemoteException e) { 117 mLaunchedFromUid = -1; 118 } 119 mPm = getPackageManager(); 120 mAlwaysUseOption = alwaysUseOption; 121 mMaxColumns = getResources().getInteger(R.integer.config_maxResolverActivityColumns); 122 intent.setComponent(null); 123 124 AlertController.AlertParams ap = mAlertParams; 125 126 ap.mTitle = title; 127 128 mPackageMonitor.register(this, getMainLooper(), false); 129 mRegistered = true; 130 131 final ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 132 mIconDpi = am.getLauncherLargeIconDensity(); 133 mIconSize = am.getLauncherLargeIconSize(); 134 135 mAdapter = new ResolveListAdapter(this, intent, initialIntents, rList, 136 mLaunchedFromUid); 137 int count = mAdapter.getCount(); 138 if (mLaunchedFromUid < 0 || UserHandle.isIsolated(mLaunchedFromUid)) { 139 // Gulp! 140 finish(); 141 return; 142 } else if (count > 1) { 143 ap.mView = getLayoutInflater().inflate(R.layout.resolver_list, null); 144 mListView = (ListView) ap.mView.findViewById(R.id.resolver_list); 145 mListView.setAdapter(mAdapter); 146 mListView.setOnItemClickListener(this); 147 mListView.setOnItemLongClickListener(new ItemLongClickListener()); 148 149 if (alwaysUseOption) { 150 mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 151 } 152 } else if (count == 1) { 153 startActivity(mAdapter.intentForPosition(0)); 154 mPackageMonitor.unregister(); 155 mRegistered = false; 156 finish(); 157 return; 158 } else { 159 ap.mMessage = getResources().getText(R.string.noApplications); 160 } 161 162 setupAlert(); 163 164 if (alwaysUseOption) { 165 final ViewGroup buttonLayout = (ViewGroup) findViewById(R.id.button_bar); 166 if (buttonLayout != null) { 167 buttonLayout.setVisibility(View.VISIBLE); 168 mAlwaysButton = (Button) buttonLayout.findViewById(R.id.button_always); 169 mOnceButton = (Button) buttonLayout.findViewById(R.id.button_once); 170 } else { 171 mAlwaysUseOption = false; 172 } 173 } 174 final int initialHighlight = mAdapter.getInitialHighlight(); 175 if (initialHighlight >= 0) { 176 mListView.setItemChecked(initialHighlight, true); 177 onItemClick(null, null, initialHighlight, 0); // Other entries are not used 178 } 179 } 180 181 Drawable getIcon(Resources res, int resId) { 182 Drawable result; 183 try { 184 result = res.getDrawableForDensity(resId, mIconDpi); 185 } catch (Resources.NotFoundException e) { 186 result = null; 187 } 188 189 return result; 190 } 191 192 Drawable loadIconForResolveInfo(ResolveInfo ri) { 193 Drawable dr; 194 try { 195 if (ri.resolvePackageName != null && ri.icon != 0) { 196 dr = getIcon(mPm.getResourcesForApplication(ri.resolvePackageName), ri.icon); 197 if (dr != null) { 198 return dr; 199 } 200 } 201 final int iconRes = ri.getIconResource(); 202 if (iconRes != 0) { 203 dr = getIcon(mPm.getResourcesForApplication(ri.activityInfo.packageName), iconRes); 204 if (dr != null) { 205 return dr; 206 } 207 } 208 } catch (NameNotFoundException e) { 209 Log.e(TAG, "Couldn't find resources for package", e); 210 } 211 return ri.loadIcon(mPm); 212 } 213 214 @Override 215 protected void onRestart() { 216 super.onRestart(); 217 if (!mRegistered) { 218 mPackageMonitor.register(this, getMainLooper(), false); 219 mRegistered = true; 220 } 221 mAdapter.handlePackagesChanged(); 222 } 223 224 @Override 225 protected void onStop() { 226 super.onStop(); 227 if (mRegistered) { 228 mPackageMonitor.unregister(); 229 mRegistered = false; 230 } 231 if ((getIntent().getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) { 232 // This resolver is in the unusual situation where it has been 233 // launched at the top of a new task. We don't let it be added 234 // to the recent tasks shown to the user, and we need to make sure 235 // that each time we are launched we get the correct launching 236 // uid (not re-using the same resolver from an old launching uid), 237 // so we will now finish ourself since being no longer visible, 238 // the user probably can't get back to us. 239 if (!isChangingConfigurations()) { 240 finish(); 241 } 242 } 243 } 244 245 @Override 246 protected void onRestoreInstanceState(Bundle savedInstanceState) { 247 super.onRestoreInstanceState(savedInstanceState); 248 if (mAlwaysUseOption) { 249 final int checkedPos = mListView.getCheckedItemPosition(); 250 final boolean enabled = checkedPos != ListView.INVALID_POSITION; 251 mLastSelected = checkedPos; 252 mAlwaysButton.setEnabled(enabled); 253 mOnceButton.setEnabled(enabled); 254 if (enabled) { 255 mListView.setSelection(checkedPos); 256 } 257 } 258 } 259 260 @Override 261 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 262 final int checkedPos = mListView.getCheckedItemPosition(); 263 final boolean hasValidSelection = checkedPos != ListView.INVALID_POSITION; 264 if (mAlwaysUseOption && (!hasValidSelection || mLastSelected != checkedPos)) { 265 mAlwaysButton.setEnabled(hasValidSelection); 266 mOnceButton.setEnabled(hasValidSelection); 267 if (hasValidSelection) { 268 mListView.smoothScrollToPosition(checkedPos); 269 } 270 mLastSelected = checkedPos; 271 } else { 272 startSelected(position, false); 273 } 274 } 275 276 public void onButtonClick(View v) { 277 final int id = v.getId(); 278 startSelected(mListView.getCheckedItemPosition(), id == R.id.button_always); 279 dismiss(); 280 } 281 282 void startSelected(int which, boolean always) { 283 ResolveInfo ri = mAdapter.resolveInfoForPosition(which); 284 Intent intent = mAdapter.intentForPosition(which); 285 onIntentSelected(ri, intent, always); 286 finish(); 287 } 288 289 protected void onIntentSelected(ResolveInfo ri, Intent intent, boolean alwaysCheck) { 290 if (mAlwaysUseOption) { 291 // Build a reasonable intent filter, based on what matched. 292 IntentFilter filter = new IntentFilter(); 293 294 if (intent.getAction() != null) { 295 filter.addAction(intent.getAction()); 296 } 297 Set<String> categories = intent.getCategories(); 298 if (categories != null) { 299 for (String cat : categories) { 300 filter.addCategory(cat); 301 } 302 } 303 filter.addCategory(Intent.CATEGORY_DEFAULT); 304 305 int cat = ri.match&IntentFilter.MATCH_CATEGORY_MASK; 306 Uri data = intent.getData(); 307 if (cat == IntentFilter.MATCH_CATEGORY_TYPE) { 308 String mimeType = intent.resolveType(this); 309 if (mimeType != null) { 310 try { 311 filter.addDataType(mimeType); 312 } catch (IntentFilter.MalformedMimeTypeException e) { 313 Log.w("ResolverActivity", e); 314 filter = null; 315 } 316 } 317 } 318 if (data != null && data.getScheme() != null) { 319 // We need the data specification if there was no type, 320 // OR if the scheme is not one of our magical "file:" 321 // or "content:" schemes (see IntentFilter for the reason). 322 if (cat != IntentFilter.MATCH_CATEGORY_TYPE 323 || (!"file".equals(data.getScheme()) 324 && !"content".equals(data.getScheme()))) { 325 filter.addDataScheme(data.getScheme()); 326 327 // Look through the resolved filter to determine which part 328 // of it matched the original Intent. 329 Iterator<PatternMatcher> pIt = ri.filter.schemeSpecificPartsIterator(); 330 if (pIt != null) { 331 String ssp = data.getSchemeSpecificPart(); 332 while (ssp != null && pIt.hasNext()) { 333 PatternMatcher p = pIt.next(); 334 if (p.match(ssp)) { 335 filter.addDataSchemeSpecificPart(p.getPath(), p.getType()); 336 break; 337 } 338 } 339 } 340 Iterator<IntentFilter.AuthorityEntry> aIt = ri.filter.authoritiesIterator(); 341 if (aIt != null) { 342 while (aIt.hasNext()) { 343 IntentFilter.AuthorityEntry a = aIt.next(); 344 if (a.match(data) >= 0) { 345 int port = a.getPort(); 346 filter.addDataAuthority(a.getHost(), 347 port >= 0 ? Integer.toString(port) : null); 348 break; 349 } 350 } 351 } 352 pIt = ri.filter.pathsIterator(); 353 if (pIt != null) { 354 String path = data.getPath(); 355 while (path != null && pIt.hasNext()) { 356 PatternMatcher p = pIt.next(); 357 if (p.match(path)) { 358 filter.addDataPath(p.getPath(), p.getType()); 359 break; 360 } 361 } 362 } 363 } 364 } 365 366 if (filter != null) { 367 final int N = mAdapter.mList.size(); 368 ComponentName[] set = new ComponentName[N]; 369 int bestMatch = 0; 370 for (int i=0; i<N; i++) { 371 ResolveInfo r = mAdapter.mList.get(i).ri; 372 set[i] = new ComponentName(r.activityInfo.packageName, 373 r.activityInfo.name); 374 if (r.match > bestMatch) bestMatch = r.match; 375 } 376 if (alwaysCheck) { 377 getPackageManager().addPreferredActivity(filter, bestMatch, set, 378 intent.getComponent()); 379 } else { 380 try { 381 AppGlobals.getPackageManager().setLastChosenActivity(intent, 382 intent.resolveTypeIfNeeded(getContentResolver()), 383 PackageManager.MATCH_DEFAULT_ONLY, 384 filter, bestMatch, intent.getComponent()); 385 } catch (RemoteException re) { 386 Log.d(TAG, "Error calling setLastChosenActivity\n" + re); 387 } 388 } 389 } 390 } 391 392 if (intent != null) { 393 startActivity(intent); 394 } 395 } 396 397 void showAppDetails(ResolveInfo ri) { 398 Intent in = new Intent().setAction("android.settings.APPLICATION_DETAILS_SETTINGS") 399 .setData(Uri.fromParts("package", ri.activityInfo.packageName, null)) 400 .addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 401 startActivity(in); 402 } 403 404 private final class DisplayResolveInfo { 405 ResolveInfo ri; 406 CharSequence displayLabel; 407 Drawable displayIcon; 408 CharSequence extendedInfo; 409 Intent origIntent; 410 411 DisplayResolveInfo(ResolveInfo pri, CharSequence pLabel, 412 CharSequence pInfo, Intent pOrigIntent) { 413 ri = pri; 414 displayLabel = pLabel; 415 extendedInfo = pInfo; 416 origIntent = pOrigIntent; 417 } 418 } 419 420 private final class ResolveListAdapter extends BaseAdapter { 421 private final Intent[] mInitialIntents; 422 private final List<ResolveInfo> mBaseResolveList; 423 private ResolveInfo mLastChosen; 424 private final Intent mIntent; 425 private final int mLaunchedFromUid; 426 private final LayoutInflater mInflater; 427 428 private List<DisplayResolveInfo> mList; 429 private int mInitialHighlight = -1; 430 431 public ResolveListAdapter(Context context, Intent intent, 432 Intent[] initialIntents, List<ResolveInfo> rList, int launchedFromUid) { 433 mIntent = new Intent(intent); 434 mIntent.setComponent(null); 435 mInitialIntents = initialIntents; 436 mBaseResolveList = rList; 437 mLaunchedFromUid = launchedFromUid; 438 mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 439 mList = new ArrayList<DisplayResolveInfo>(); 440 rebuildList(); 441 } 442 443 public void handlePackagesChanged() { 444 final int oldItemCount = getCount(); 445 rebuildList(); 446 notifyDataSetChanged(); 447 final int newItemCount = getCount(); 448 if (newItemCount == 0) { 449 // We no longer have any items... just finish the activity. 450 finish(); 451 } 452 } 453 454 public int getInitialHighlight() { 455 return mInitialHighlight; 456 } 457 458 private void rebuildList() { 459 List<ResolveInfo> currentResolveList; 460 461 try { 462 mLastChosen = AppGlobals.getPackageManager().getLastChosenActivity( 463 mIntent, mIntent.resolveTypeIfNeeded(getContentResolver()), 464 PackageManager.MATCH_DEFAULT_ONLY); 465 } catch (RemoteException re) { 466 Log.d(TAG, "Error calling setLastChosenActivity\n" + re); 467 } 468 469 mList.clear(); 470 if (mBaseResolveList != null) { 471 currentResolveList = mBaseResolveList; 472 } else { 473 currentResolveList = mPm.queryIntentActivities( 474 mIntent, PackageManager.MATCH_DEFAULT_ONLY 475 | (mAlwaysUseOption ? PackageManager.GET_RESOLVED_FILTER : 0)); 476 // Filter out any activities that the launched uid does not 477 // have permission for. We don't do this when we have an explicit 478 // list of resolved activities, because that only happens when 479 // we are being subclassed, so we can safely launch whatever 480 // they gave us. 481 if (currentResolveList != null) { 482 for (int i=currentResolveList.size()-1; i >= 0; i--) { 483 ActivityInfo ai = currentResolveList.get(i).activityInfo; 484 int granted = ActivityManager.checkComponentPermission( 485 ai.permission, mLaunchedFromUid, 486 ai.applicationInfo.uid, ai.exported); 487 if (granted != PackageManager.PERMISSION_GRANTED) { 488 // Access not allowed! 489 currentResolveList.remove(i); 490 } 491 } 492 } 493 } 494 int N; 495 if ((currentResolveList != null) && ((N = currentResolveList.size()) > 0)) { 496 // Only display the first matches that are either of equal 497 // priority or have asked to be default options. 498 ResolveInfo r0 = currentResolveList.get(0); 499 for (int i=1; i<N; i++) { 500 ResolveInfo ri = currentResolveList.get(i); 501 if (DEBUG) Log.v( 502 "ResolveListActivity", 503 r0.activityInfo.name + "=" + 504 r0.priority + "/" + r0.isDefault + " vs " + 505 ri.activityInfo.name + "=" + 506 ri.priority + "/" + ri.isDefault); 507 if (r0.priority != ri.priority || 508 r0.isDefault != ri.isDefault) { 509 while (i < N) { 510 currentResolveList.remove(i); 511 N--; 512 } 513 } 514 } 515 if (N > 1) { 516 ResolveInfo.DisplayNameComparator rComparator = 517 new ResolveInfo.DisplayNameComparator(mPm); 518 Collections.sort(currentResolveList, rComparator); 519 } 520 // First put the initial items at the top. 521 if (mInitialIntents != null) { 522 for (int i=0; i<mInitialIntents.length; i++) { 523 Intent ii = mInitialIntents[i]; 524 if (ii == null) { 525 continue; 526 } 527 ActivityInfo ai = ii.resolveActivityInfo( 528 getPackageManager(), 0); 529 if (ai == null) { 530 Log.w("ResolverActivity", "No activity found for " 531 + ii); 532 continue; 533 } 534 ResolveInfo ri = new ResolveInfo(); 535 ri.activityInfo = ai; 536 if (ii instanceof LabeledIntent) { 537 LabeledIntent li = (LabeledIntent)ii; 538 ri.resolvePackageName = li.getSourcePackage(); 539 ri.labelRes = li.getLabelResource(); 540 ri.nonLocalizedLabel = li.getNonLocalizedLabel(); 541 ri.icon = li.getIconResource(); 542 } 543 mList.add(new DisplayResolveInfo(ri, 544 ri.loadLabel(getPackageManager()), null, ii)); 545 } 546 } 547 548 // Check for applications with same name and use application name or 549 // package name if necessary 550 r0 = currentResolveList.get(0); 551 int start = 0; 552 CharSequence r0Label = r0.loadLabel(mPm); 553 mShowExtended = false; 554 for (int i = 1; i < N; i++) { 555 if (r0Label == null) { 556 r0Label = r0.activityInfo.packageName; 557 } 558 ResolveInfo ri = currentResolveList.get(i); 559 CharSequence riLabel = ri.loadLabel(mPm); 560 if (riLabel == null) { 561 riLabel = ri.activityInfo.packageName; 562 } 563 if (riLabel.equals(r0Label)) { 564 continue; 565 } 566 processGroup(currentResolveList, start, (i-1), r0, r0Label); 567 r0 = ri; 568 r0Label = riLabel; 569 start = i; 570 } 571 // Process last group 572 processGroup(currentResolveList, start, (N-1), r0, r0Label); 573 } 574 } 575 576 private void processGroup(List<ResolveInfo> rList, int start, int end, ResolveInfo ro, 577 CharSequence roLabel) { 578 // Process labels from start to i 579 int num = end - start+1; 580 if (num == 1) { 581 if (mLastChosen != null 582 && mLastChosen.activityInfo.packageName.equals( 583 ro.activityInfo.packageName) 584 && mLastChosen.activityInfo.name.equals(ro.activityInfo.name)) { 585 mInitialHighlight = mList.size(); 586 } 587 // No duplicate labels. Use label for entry at start 588 mList.add(new DisplayResolveInfo(ro, roLabel, null, null)); 589 } else { 590 mShowExtended = true; 591 boolean usePkg = false; 592 CharSequence startApp = ro.activityInfo.applicationInfo.loadLabel(mPm); 593 if (startApp == null) { 594 usePkg = true; 595 } 596 if (!usePkg) { 597 // Use HashSet to track duplicates 598 HashSet<CharSequence> duplicates = 599 new HashSet<CharSequence>(); 600 duplicates.add(startApp); 601 for (int j = start+1; j <= end ; j++) { 602 ResolveInfo jRi = rList.get(j); 603 CharSequence jApp = jRi.activityInfo.applicationInfo.loadLabel(mPm); 604 if ( (jApp == null) || (duplicates.contains(jApp))) { 605 usePkg = true; 606 break; 607 } else { 608 duplicates.add(jApp); 609 } 610 } 611 // Clear HashSet for later use 612 duplicates.clear(); 613 } 614 for (int k = start; k <= end; k++) { 615 ResolveInfo add = rList.get(k); 616 if (mLastChosen != null 617 && mLastChosen.activityInfo.packageName.equals( 618 add.activityInfo.packageName) 619 && mLastChosen.activityInfo.name.equals(add.activityInfo.name)) { 620 mInitialHighlight = mList.size(); 621 } 622 if (usePkg) { 623 // Use application name for all entries from start to end-1 624 mList.add(new DisplayResolveInfo(add, roLabel, 625 add.activityInfo.packageName, null)); 626 } else { 627 // Use package name for all entries from start to end-1 628 mList.add(new DisplayResolveInfo(add, roLabel, 629 add.activityInfo.applicationInfo.loadLabel(mPm), null)); 630 } 631 } 632 } 633 } 634 635 public ResolveInfo resolveInfoForPosition(int position) { 636 return mList.get(position).ri; 637 } 638 639 public Intent intentForPosition(int position) { 640 DisplayResolveInfo dri = mList.get(position); 641 642 Intent intent = new Intent(dri.origIntent != null 643 ? dri.origIntent : mIntent); 644 intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT 645 |Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP); 646 ActivityInfo ai = dri.ri.activityInfo; 647 intent.setComponent(new ComponentName( 648 ai.applicationInfo.packageName, ai.name)); 649 return intent; 650 } 651 652 public int getCount() { 653 return mList.size(); 654 } 655 656 public Object getItem(int position) { 657 return mList.get(position); 658 } 659 660 public long getItemId(int position) { 661 return position; 662 } 663 664 public View getView(int position, View convertView, ViewGroup parent) { 665 View view; 666 if (convertView == null) { 667 view = mInflater.inflate( 668 com.android.internal.R.layout.resolve_list_item, parent, false); 669 670 final ViewHolder holder = new ViewHolder(view); 671 view.setTag(holder); 672 673 // Fix the icon size even if we have different sized resources 674 ViewGroup.LayoutParams lp = holder.icon.getLayoutParams(); 675 lp.width = lp.height = mIconSize; 676 } else { 677 view = convertView; 678 } 679 bindView(view, mList.get(position)); 680 return view; 681 } 682 683 private final void bindView(View view, DisplayResolveInfo info) { 684 final ViewHolder holder = (ViewHolder) view.getTag(); 685 holder.text.setText(info.displayLabel); 686 if (mShowExtended) { 687 holder.text2.setVisibility(View.VISIBLE); 688 holder.text2.setText(info.extendedInfo); 689 } else { 690 holder.text2.setVisibility(View.GONE); 691 } 692 if (info.displayIcon == null) { 693 new LoadIconTask().execute(info); 694 } 695 holder.icon.setImageDrawable(info.displayIcon); 696 } 697 } 698 699 static class ViewHolder { 700 public TextView text; 701 public TextView text2; 702 public ImageView icon; 703 704 public ViewHolder(View view) { 705 text = (TextView) view.findViewById(com.android.internal.R.id.text1); 706 text2 = (TextView) view.findViewById(com.android.internal.R.id.text2); 707 icon = (ImageView) view.findViewById(R.id.icon); 708 } 709 } 710 711 class ItemLongClickListener implements AdapterView.OnItemLongClickListener { 712 713 @Override 714 public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { 715 ResolveInfo ri = mAdapter.resolveInfoForPosition(position); 716 showAppDetails(ri); 717 return true; 718 } 719 720 } 721 722 class LoadIconTask extends AsyncTask<DisplayResolveInfo, Void, DisplayResolveInfo> { 723 @Override 724 protected DisplayResolveInfo doInBackground(DisplayResolveInfo... params) { 725 final DisplayResolveInfo info = params[0]; 726 if (info.displayIcon == null) { 727 info.displayIcon = loadIconForResolveInfo(info.ri); 728 } 729 return info; 730 } 731 732 @Override 733 protected void onPostExecute(DisplayResolveInfo info) { 734 mAdapter.notifyDataSetChanged(); 735 } 736 } 737} 738 739