WebView.java revision f2361156c4aee3dad26f25c410fcf255656922d1
1/* 2 * Copyright (C) 2006 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 android.webkit; 18 19import android.annotation.Widget; 20import android.content.Context; 21import android.content.res.Configuration; 22import android.graphics.Bitmap; 23import android.graphics.Canvas; 24import android.graphics.Paint; 25import android.graphics.Picture; 26import android.graphics.Rect; 27import android.graphics.drawable.Drawable; 28import android.net.http.SslCertificate; 29import android.os.Bundle; 30import android.os.Looper; 31import android.os.Message; 32import android.os.StrictMode; 33import android.util.AttributeSet; 34import android.util.Log; 35import android.view.KeyEvent; 36import android.view.MotionEvent; 37import android.view.View; 38import android.view.ViewDebug; 39import android.view.ViewGroup; 40import android.view.ViewTreeObserver; 41import android.view.accessibility.AccessibilityEvent; 42import android.view.accessibility.AccessibilityNodeInfo; 43import android.view.inputmethod.EditorInfo; 44import android.view.inputmethod.InputConnection; 45import android.widget.AbsoluteLayout; 46 47import java.io.BufferedWriter; 48import java.io.File; 49import java.util.Map; 50 51/** 52 * <p>A View that displays web pages. This class is the basis upon which you 53 * can roll your own web browser or simply display some online content within your Activity. 54 * It uses the WebKit rendering engine to display 55 * web pages and includes methods to navigate forward and backward 56 * through a history, zoom in and out, perform text searches and more.</p> 57 * <p>To enable the built-in zoom, set 58 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 59 * (introduced in API level {@link android.os.Build.VERSION_CODES#CUPCAKE}). 60 * <p>Note that, in order for your Activity to access the Internet and load web pages 61 * in a WebView, you must add the {@code INTERNET} permissions to your 62 * Android Manifest file:</p> 63 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 64 * 65 * <p>This must be a child of the <a 66 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 67 * element.</p> 68 * 69 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 70 * tutorial</a>.</p> 71 * 72 * <h3>Basic usage</h3> 73 * 74 * <p>By default, a WebView provides no browser-like widgets, does not 75 * enable JavaScript and web page errors are ignored. If your goal is only 76 * to display some HTML as a part of your UI, this is probably fine; 77 * the user won't need to interact with the web page beyond reading 78 * it, and the web page won't need to interact with the user. If you 79 * actually want a full-blown web browser, then you probably want to 80 * invoke the Browser application with a URL Intent rather than show it 81 * with a WebView. For example: 82 * <pre> 83 * Uri uri = Uri.parse("http://www.example.com"); 84 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 85 * startActivity(intent); 86 * </pre> 87 * <p>See {@link android.content.Intent} for more information.</p> 88 * 89 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 90 * or set the entire Activity window as a WebView during {@link 91 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 92 * <pre class="prettyprint"> 93 * WebView webview = new WebView(this); 94 * setContentView(webview); 95 * </pre> 96 * 97 * <p>Then load the desired web page:</p> 98 * <pre> 99 * // Simplest usage: note that an exception will NOT be thrown 100 * // if there is an error loading this page (see below). 101 * webview.loadUrl("http://slashdot.org/"); 102 * 103 * // OR, you can also load from an HTML string: 104 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 105 * webview.loadData(summary, "text/html", null); 106 * // ... although note that there are restrictions on what this HTML can do. 107 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 108 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 109 * </pre> 110 * 111 * <p>A WebView has several customization points where you can add your 112 * own behavior. These are:</p> 113 * 114 * <ul> 115 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 116 * This class is called when something that might impact a 117 * browser UI happens, for instance, progress updates and 118 * JavaScript alerts are sent here (see <a 119 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 120 * </li> 121 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 122 * It will be called when things happen that impact the 123 * rendering of the content, eg, errors or form submissions. You 124 * can also intercept URL loading here (via {@link 125 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 126 * shouldOverrideUrlLoading()}).</li> 127 * <li>Modifying the {@link android.webkit.WebSettings}, such as 128 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 129 * setJavaScriptEnabled()}. </li> 130 * <li>Injecting Java objects into the WebView using the 131 * {@link android.webkit.WebView#addJavascriptInterface} method. This 132 * method allows you to inject Java objects into a page's JavaScript 133 * context, so that they can be accessed by JavaScript in the page.</li> 134 * </ul> 135 * 136 * <p>Here's a more complicated example, showing error handling, 137 * settings, and progress notification:</p> 138 * 139 * <pre class="prettyprint"> 140 * // Let's display the progress in the activity title bar, like the 141 * // browser app does. 142 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 143 * 144 * webview.getSettings().setJavaScriptEnabled(true); 145 * 146 * final Activity activity = this; 147 * webview.setWebChromeClient(new WebChromeClient() { 148 * public void onProgressChanged(WebView view, int progress) { 149 * // Activities and WebViews measure progress with different scales. 150 * // The progress meter will automatically disappear when we reach 100% 151 * activity.setProgress(progress * 1000); 152 * } 153 * }); 154 * webview.setWebViewClient(new WebViewClient() { 155 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 156 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 157 * } 158 * }); 159 * 160 * webview.loadUrl("http://slashdot.org/"); 161 * </pre> 162 * 163 * <h3>Cookie and window management</h3> 164 * 165 * <p>For obvious security reasons, your application has its own 166 * cache, cookie store etc.—it does not share the Browser 167 * application's data. Cookies are managed on a separate thread, so 168 * operations like index building don't block the UI 169 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 170 * if you want to use cookies in your application. 171 * </p> 172 * 173 * <p>By default, requests by the HTML to open new windows are 174 * ignored. This is true whether they be opened by JavaScript or by 175 * the target attribute on a link. You can customize your 176 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 177 * and render them in whatever manner you want.</p> 178 * 179 * <p>The standard behavior for an Activity is to be destroyed and 180 * recreated when the device orientation or any other configuration changes. This will cause 181 * the WebView to reload the current page. If you don't want that, you 182 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 183 * changes, and then just leave the WebView alone. It'll automatically 184 * re-orient itself as appropriate. Read <a 185 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 186 * more information about how to handle configuration changes during runtime.</p> 187 * 188 * 189 * <h3>Building web pages to support different screen densities</h3> 190 * 191 * <p>The screen density of a device is based on the screen resolution. A screen with low density 192 * has fewer available pixels per inch, where a screen with high density 193 * has more — sometimes significantly more — pixels per inch. The density of a 194 * screen is important because, other things being equal, a UI element (such as a button) whose 195 * height and width are defined in terms of screen pixels will appear larger on the lower density 196 * screen and smaller on the higher density screen. 197 * For simplicity, Android collapses all actual screen densities into three generalized densities: 198 * high, medium, and low.</p> 199 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 200 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 201 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 202 * are bigger). 203 * Starting with API level {@link android.os.Build.VERSION_CODES#ECLAIR}, WebView supports DOM, CSS, 204 * and meta tag features to help you (as a web developer) target screens with different screen 205 * densities.</p> 206 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 207 * <ul> 208 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 209 * default scaling factor used for the current device. For example, if the value of {@code 210 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 211 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 212 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 213 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 214 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 215 * (discussed below), then you can stop this default scaling behavior.</li> 216 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 217 * densities for which this style sheet is to be used. The corresponding value should be either 218 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 219 * density, or high density screens, respectively. For example: 220 * <pre> 221 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 222 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 223 * which is the high density pixel ratio.</p> 224 * </li> 225 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 226 * this to specify the target density for which the web page is designed, using the following 227 * values: 228 * <ul> 229 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 230 * occurs.</li> 231 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 232 * as appropriate.</li> 233 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 234 * low density screens scale down. This is also the default behavior.</li> 235 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 236 * as appropriate.</li> 237 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 238 * values are 70-400).</li> 239 * </ul> 240 * <p>Here's an example meta tag to specify the target density:</p> 241 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 242 * </ul> 243 * <p>If you want to modify your web page for different densities, by using the {@code 244 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 245 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 246 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 247 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 248 * 249 * <h3>HTML5 Video support</h3> 250 * 251 * <p>In order to support inline HTML5 video in your application, you need to have hardware 252 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 253 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 254 * and {@link WebChromeClient#onHideCustomView()} are required, 255 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 256 * </p> 257 */ 258// Implementation notes. 259// The WebView is a thin API class that delegates its public API to a backend WebViewProvider 260// class instance. WebView extends {@link AbsoluteLayout} for backward compatibility reasons. 261// Methods are delegated to the provider implementation: all public API methods introduced in this 262// file are fully delegated, whereas public and protected methods from the View base classes are 263// only delegated where a specific need exists for them to do so. 264@Widget 265public class WebView extends AbsoluteLayout 266 implements ViewTreeObserver.OnGlobalFocusChangeListener, 267 ViewGroup.OnHierarchyChangeListener, ViewDebug.HierarchyHandler { 268 269 private static final String LOGTAG = "webview_proxy"; 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Sets the WebView to the transportation object. 279 * 280 * @param webview the WebView to transport 281 */ 282 public synchronized void setWebView(WebView webview) { 283 mWebview = webview; 284 } 285 286 /** 287 * Gets the WebView object. 288 * 289 * @return the transported WebView object 290 */ 291 public synchronized WebView getWebView() { 292 return mWebview; 293 } 294 } 295 296 /** 297 * URI scheme for telephone number. 298 */ 299 public static final String SCHEME_TEL = "tel:"; 300 /** 301 * URI scheme for email address. 302 */ 303 public static final String SCHEME_MAILTO = "mailto:"; 304 /** 305 * URI scheme for map address. 306 */ 307 public static final String SCHEME_GEO = "geo:0,0?q="; 308 309 /** 310 * Interface to listen for find results. 311 */ 312 public interface FindListener { 313 /** 314 * Notifies the listener about progress made by a find operation. 315 * 316 * @param numberOfMatches how many matches have been found 317 * @param activeMatchOrdinal the zero-based ordinal of the currently selected match 318 * @param isDoneCounting whether the find operation has actually completed. The listener 319 * may be notified multiple times while the 320 * operation is underway, and the numberOfMatches 321 * value should not be considered final unless 322 * isDoneCounting is true. 323 */ 324 public void onFindResultReceived(int numberOfMatches, int activeMatchOrdinal, 325 boolean isDoneCounting); 326 } 327 328 /** 329 * Interface to listen for new pictures as they change. 330 * 331 * @deprecated This interface is now obsolete. 332 */ 333 @Deprecated 334 public interface PictureListener { 335 /** 336 * Notifies the listener that the picture has changed. 337 * 338 * @param view the WebView that owns the picture 339 * @param picture the new picture 340 * @deprecated Due to internal changes, the picture does not include 341 * composited layers such as fixed position elements or 342 * scrollable divs. While the PictureListener API can still 343 * be used to detect changes in the WebView content, you 344 * are advised against its usage until a replacement is 345 * provided in a future Android release. 346 */ 347 @Deprecated 348 public void onNewPicture(WebView view, Picture picture); 349 } 350 351 public static class HitTestResult { 352 /** 353 * Default HitTestResult, where the target is unknown. 354 */ 355 public static final int UNKNOWN_TYPE = 0; 356 /** 357 * @deprecated This type is no longer used. 358 */ 359 @Deprecated 360 public static final int ANCHOR_TYPE = 1; 361 /** 362 * HitTestResult for hitting a phone number. 363 */ 364 public static final int PHONE_TYPE = 2; 365 /** 366 * HitTestResult for hitting a map address. 367 */ 368 public static final int GEO_TYPE = 3; 369 /** 370 * HitTestResult for hitting an email address. 371 */ 372 public static final int EMAIL_TYPE = 4; 373 /** 374 * HitTestResult for hitting an HTML::img tag. 375 */ 376 public static final int IMAGE_TYPE = 5; 377 /** 378 * @deprecated This type is no longer used. 379 */ 380 @Deprecated 381 public static final int IMAGE_ANCHOR_TYPE = 6; 382 /** 383 * HitTestResult for hitting a HTML::a tag with src=http. 384 */ 385 public static final int SRC_ANCHOR_TYPE = 7; 386 /** 387 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img. 388 */ 389 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 390 /** 391 * HitTestResult for hitting an edit text area. 392 */ 393 public static final int EDIT_TEXT_TYPE = 9; 394 395 private int mType; 396 private String mExtra; 397 398 /** 399 * @hide Only for use by WebViewProvider implementations 400 */ 401 public HitTestResult() { 402 mType = UNKNOWN_TYPE; 403 } 404 405 /** 406 * @hide Only for use by WebViewProvider implementations 407 */ 408 public void setType(int type) { 409 mType = type; 410 } 411 412 /** 413 * @hide Only for use by WebViewProvider implementations 414 */ 415 public void setExtra(String extra) { 416 mExtra = extra; 417 } 418 419 /** 420 * Gets the type of the hit test result. See the XXX_TYPE constants 421 * defined in this class. 422 * 423 * @return the type of the hit test result 424 */ 425 public int getType() { 426 return mType; 427 } 428 429 /** 430 * Gets additional type-dependant information about the result. See 431 * {@link WebView#getHitTestResult()} for details. May either be null 432 * or contain extra information about this result. 433 * 434 * @return additional type-dependant information about the result 435 */ 436 public String getExtra() { 437 return mExtra; 438 } 439 } 440 441 /** 442 * Constructs a new WebView with a Context object. 443 * 444 * @param context a Context object used to access application assets 445 */ 446 public WebView(Context context) { 447 this(context, null); 448 } 449 450 /** 451 * Constructs a new WebView with layout parameters. 452 * 453 * @param context a Context object used to access application assets 454 * @param attrs an AttributeSet passed to our parent 455 */ 456 public WebView(Context context, AttributeSet attrs) { 457 this(context, attrs, com.android.internal.R.attr.webViewStyle); 458 } 459 460 /** 461 * Constructs a new WebView with layout parameters and a default style. 462 * 463 * @param context a Context object used to access application assets 464 * @param attrs an AttributeSet passed to our parent 465 * @param defStyle the default style resource ID 466 */ 467 public WebView(Context context, AttributeSet attrs, int defStyle) { 468 this(context, attrs, defStyle, false); 469 } 470 471 /** 472 * Constructs a new WebView with layout parameters and a default style. 473 * 474 * @param context a Context object used to access application assets 475 * @param attrs an AttributeSet passed to our parent 476 * @param defStyle the default style resource ID 477 * @param privateBrowsing whether this WebView will be initialized in 478 * private mode 479 */ 480 public WebView(Context context, AttributeSet attrs, int defStyle, 481 boolean privateBrowsing) { 482 this(context, attrs, defStyle, null, privateBrowsing); 483 } 484 485 /** 486 * Constructs a new WebView with layout parameters, a default style and a set 487 * of custom Javscript interfaces to be added to this WebView at initialization 488 * time. This guarantees that these interfaces will be available when the JS 489 * context is initialized. 490 * 491 * @param context a Context object used to access application assets 492 * @param attrs an AttributeSet passed to our parent 493 * @param defStyle the default style resource ID 494 * @param javaScriptInterfaces a Map of interface names, as keys, and 495 * object implementing those interfaces, as 496 * values 497 * @param privateBrowsing whether this WebView will be initialized in 498 * private mode 499 * @hide This is used internally by dumprendertree, as it requires the javaScript interfaces to 500 * be added synchronously, before a subsequent loadUrl call takes effect. 501 */ 502 @SuppressWarnings("deprecation") // for super() call into deprecated base class constructor. 503 protected WebView(Context context, AttributeSet attrs, int defStyle, 504 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 505 super(context, attrs, defStyle); 506 if (context == null) { 507 throw new IllegalArgumentException("Invalid context argument"); 508 } 509 checkThread(); 510 511 ensureProviderCreated(); 512 mProvider.init(javaScriptInterfaces, privateBrowsing); 513 } 514 515 /** 516 * Specifies whether the horizontal scrollbar has overlay style. 517 * 518 * @param overlay true if horizontal scrollbar should have overlay style 519 */ 520 public void setHorizontalScrollbarOverlay(boolean overlay) { 521 checkThread(); 522 mProvider.setHorizontalScrollbarOverlay(overlay); 523 } 524 525 /** 526 * Specifies whether the vertical scrollbar has overlay style. 527 * 528 * @param overlay true if vertical scrollbar should have overlay style 529 */ 530 public void setVerticalScrollbarOverlay(boolean overlay) { 531 checkThread(); 532 mProvider.setVerticalScrollbarOverlay(overlay); 533 } 534 535 /** 536 * Gets whether horizontal scrollbar has overlay style. 537 * 538 * @return true if horizontal scrollbar has overlay style 539 */ 540 public boolean overlayHorizontalScrollbar() { 541 checkThread(); 542 return mProvider.overlayHorizontalScrollbar(); 543 } 544 545 /** 546 * Gets whether vertical scrollbar has overlay style. 547 * 548 * @return true if vertical scrollbar has overlay style 549 */ 550 public boolean overlayVerticalScrollbar() { 551 checkThread(); 552 return mProvider.overlayVerticalScrollbar(); 553 } 554 555 /** 556 * Gets the visible height (in pixels) of the embedded title bar (if any). 557 * 558 * @deprecated This method is now obsolete. 559 */ 560 public int getVisibleTitleHeight() { 561 checkThread(); 562 return mProvider.getVisibleTitleHeight(); 563 } 564 565 /** 566 * Gets the SSL certificate for the main top-level page or null if there is 567 * no certificate (the site is not secure). 568 * 569 * @return the SSL certificate for the main top-level page 570 */ 571 public SslCertificate getCertificate() { 572 checkThread(); 573 return mProvider.getCertificate(); 574 } 575 576 /** 577 * Sets the SSL certificate for the main top-level page. 578 */ 579 public void setCertificate(SslCertificate certificate) { 580 checkThread(); 581 mProvider.setCertificate(certificate); 582 } 583 584 //------------------------------------------------------------------------- 585 // Methods called by activity 586 //------------------------------------------------------------------------- 587 588 /** 589 * Saves the username and password for a particular host in this WebView's 590 * internal database. 591 * 592 * @param host the host that required the credentials 593 * @param username the username for the given host 594 * @param password the password for the given host 595 */ 596 public void savePassword(String host, String username, String password) { 597 checkThread(); 598 mProvider.savePassword(host, username, password); 599 } 600 601 /** 602 * Sets the HTTP authentication credentials for a given host and realm. 603 * 604 * @param host the host for the credentials 605 * @param realm the realm for the credentials 606 * @param username the username for the password. If it is null, it means 607 * password can't be saved. 608 * @param password the password 609 */ 610 public void setHttpAuthUsernamePassword(String host, String realm, 611 String username, String password) { 612 checkThread(); 613 mProvider.setHttpAuthUsernamePassword(host, realm, username, password); 614 } 615 616 /** 617 * Retrieves the HTTP authentication username and password for a given 618 * host and realm pair 619 * 620 * @param host the host for which the credentials apply 621 * @param realm the realm for which the credentials apply 622 * @return String[] if found. String[0] is username, which can be null and 623 * String[1] is password. Return null if it can't find anything. 624 */ 625 public String[] getHttpAuthUsernamePassword(String host, String realm) { 626 checkThread(); 627 return mProvider.getHttpAuthUsernamePassword(host, realm); 628 } 629 630 /** 631 * Destroys the internal state of this WebView. This method should be called 632 * after this WebView has been removed from the view system. No other 633 * methods may be called on this WebView after destroy. 634 */ 635 public void destroy() { 636 checkThread(); 637 mProvider.destroy(); 638 } 639 640 /** 641 * Enables platform notifications of data state and proxy changes. 642 * Notifications are enabled by default. 643 * 644 * @deprecated This method is now obsolete. 645 */ 646 @Deprecated 647 public static void enablePlatformNotifications() { 648 checkThread(); 649 getFactory().getStatics().setPlatformNotificationsEnabled(true); 650 } 651 652 /** 653 * Disables platform notifications of data state and proxy changes. 654 * Notifications are enabled by default. 655 * 656 * @deprecated This method is now obsolete. 657 */ 658 @Deprecated 659 public static void disablePlatformNotifications() { 660 checkThread(); 661 getFactory().getStatics().setPlatformNotificationsEnabled(false); 662 } 663 664 /** 665 * Informs WebView of the network state. This is used to set 666 * the JavaScript property window.navigator.isOnline and 667 * generates the online/offline event as specified in HTML5, sec. 5.7.7 668 * 669 * @param networkUp a boolean indicating if network is available 670 */ 671 public void setNetworkAvailable(boolean networkUp) { 672 checkThread(); 673 mProvider.setNetworkAvailable(networkUp); 674 } 675 676 /** 677 * Saves the state of this WebView used in 678 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 679 * method no longer stores the display data for this WebView. The previous 680 * behavior could potentially leak files if {@link #restoreState} was never 681 * called. See {@link #savePicture} and {@link #restorePicture} for saving 682 * and restoring the display data. 683 * 684 * @param outState the Bundle to store this WebView's state 685 * @return the same copy of the back/forward list used to save the state. If 686 * saveState fails, the returned list will be null. 687 * @see #savePicture 688 * @see #restorePicture 689 */ 690 public WebBackForwardList saveState(Bundle outState) { 691 checkThread(); 692 return mProvider.saveState(outState); 693 } 694 695 /** 696 * Saves the current display data to the Bundle given. Used in conjunction 697 * with {@link #saveState}. 698 * @param b a Bundle to store the display data 699 * @param dest the file to store the serialized picture data. Will be 700 * overwritten with this WebView's picture data. 701 * @return true if the picture was successfully saved 702 * @deprecated This method is now obsolete. 703 */ 704 @Deprecated 705 public boolean savePicture(Bundle b, final File dest) { 706 checkThread(); 707 return mProvider.savePicture(b, dest); 708 } 709 710 /** 711 * Restores the display data that was saved in {@link #savePicture}. Used in 712 * conjunction with {@link #restoreState}. Note that this will not work if 713 * this WebView is hardware accelerated. 714 * 715 * @param b a Bundle containing the saved display data 716 * @param src the file where the picture data was stored 717 * @return true if the picture was successfully restored 718 * @deprecated This method is now obsolete. 719 */ 720 @Deprecated 721 public boolean restorePicture(Bundle b, File src) { 722 checkThread(); 723 return mProvider.restorePicture(b, src); 724 } 725 726 /** 727 * Restores the state of this WebView from the given map used in 728 * {@link android.app.Activity#onRestoreInstanceState}. This method should 729 * be called to restore the state of this WebView before using the object. If 730 * it is called after this WebView has had a chance to build state (load 731 * pages, create a back/forward list, etc.) there may be undesirable 732 * side-effects. Please note that this method no longer restores the 733 * display data for this WebView. See {@link #savePicture} and {@link 734 * #restorePicture} for saving and restoring the display data. 735 * 736 * @param inState the incoming Bundle of state 737 * @return the restored back/forward list or null if restoreState failed 738 * @see #savePicture 739 * @see #restorePicture 740 */ 741 public WebBackForwardList restoreState(Bundle inState) { 742 checkThread(); 743 return mProvider.restoreState(inState); 744 } 745 746 /** 747 * Loads the given URL with the specified additional HTTP headers. 748 * 749 * @param url the URL of the resource to load 750 * @param additionalHttpHeaders the additional headers to be used in the 751 * HTTP request for this URL, specified as a map from name to 752 * value. Note that if this map contains any of the headers 753 * that are set by default by this WebView, such as those 754 * controlling caching, accept types or the User-Agent, their 755 * values may be overriden by this WebView's defaults. 756 */ 757 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 758 checkThread(); 759 mProvider.loadUrl(url, additionalHttpHeaders); 760 } 761 762 /** 763 * Loads the given URL. 764 * 765 * @param url the URL of the resource to load 766 */ 767 public void loadUrl(String url) { 768 checkThread(); 769 mProvider.loadUrl(url); 770 } 771 772 /** 773 * Loads the URL with postData using "POST" method into this WebView. If url 774 * is not a network URL, it will be loaded with {link 775 * {@link #loadUrl(String)} instead. 776 * 777 * @param url the URL of the resource to load 778 * @param postData the data will be passed to "POST" request 779 */ 780 public void postUrl(String url, byte[] postData) { 781 checkThread(); 782 mProvider.postUrl(url, postData); 783 } 784 785 /** 786 * Loads the given data into this WebView using a 'data' scheme URL. 787 * <p> 788 * Note that JavaScript's same origin policy means that script running in a 789 * page loaded using this method will be unable to access content loaded 790 * using any scheme other than 'data', including 'http(s)'. To avoid this 791 * restriction, use {@link 792 * #loadDataWithBaseURL(String,String,String,String,String) 793 * loadDataWithBaseURL()} with an appropriate base URL. 794 * <p> 795 * If the value of the encoding parameter is 'base64', then the data must 796 * be encoded as base64. Otherwise, the data must use ASCII encoding for 797 * octets inside the range of safe URL characters and use the standard %xx 798 * hex encoding of URLs for octets outside that range. For example, 799 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 800 * <p> 801 * The 'data' scheme URL formed by this method uses the default US-ASCII 802 * charset. If you need need to set a different charset, you should form a 803 * 'data' scheme URL which explicitly specifies a charset parameter in the 804 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 805 * Note that the charset obtained from the mediatype portion of a data URL 806 * always overrides that specified in the HTML or XML document itself. 807 * 808 * @param data a String of data in the given encoding 809 * @param mimeType the MIME type of the data, e.g. 'text/html' 810 * @param encoding the encoding of the data 811 */ 812 public void loadData(String data, String mimeType, String encoding) { 813 checkThread(); 814 mProvider.loadData(data, mimeType, encoding); 815 } 816 817 /** 818 * Loads the given data into this WebView, using baseUrl as the base URL for 819 * the content. The base URL is used both to resolve relative URLs and when 820 * applying JavaScript's same origin policy. The historyUrl is used for the 821 * history entry. 822 * <p> 823 * Note that content specified in this way can access local device files 824 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 825 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 826 * <p> 827 * If the base URL uses the data scheme, this method is equivalent to 828 * calling {@link #loadData(String,String,String) loadData()} and the 829 * historyUrl is ignored. 830 * 831 * @param baseUrl the URL to use as the page's base URL. If null defaults to 832 * 'about:blank'. 833 * @param data a String of data in the given encoding 834 * @param mimeType the MIMEType of the data, e.g. 'text/html'. If null, 835 * defaults to 'text/html'. 836 * @param encoding the encoding of the data 837 * @param historyUrl the URL to use as the history entry. If null defaults 838 * to 'about:blank'. 839 */ 840 public void loadDataWithBaseURL(String baseUrl, String data, 841 String mimeType, String encoding, String historyUrl) { 842 checkThread(); 843 mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl); 844 } 845 846 /** 847 * Saves the current view as a web archive. 848 * 849 * @param filename the filename where the archive should be placed 850 */ 851 public void saveWebArchive(String filename) { 852 checkThread(); 853 mProvider.saveWebArchive(filename); 854 } 855 856 /** 857 * Saves the current view as a web archive. 858 * 859 * @param basename the filename where the archive should be placed 860 * @param autoname if false, takes basename to be a file. If true, basename 861 * is assumed to be a directory in which a filename will be 862 * chosen according to the URL of the current page. 863 * @param callback called after the web archive has been saved. The 864 * parameter for onReceiveValue will either be the filename 865 * under which the file was saved, or null if saving the 866 * file failed. 867 */ 868 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 869 checkThread(); 870 mProvider.saveWebArchive(basename, autoname, callback); 871 } 872 873 /** 874 * Stops the current load. 875 */ 876 public void stopLoading() { 877 checkThread(); 878 mProvider.stopLoading(); 879 } 880 881 /** 882 * Reloads the current URL. 883 */ 884 public void reload() { 885 checkThread(); 886 mProvider.reload(); 887 } 888 889 /** 890 * Gets whether this WebView has a back history item. 891 * 892 * @return true iff this WebView has a back history item 893 */ 894 public boolean canGoBack() { 895 checkThread(); 896 return mProvider.canGoBack(); 897 } 898 899 /** 900 * Goes back in the history of this WebView. 901 */ 902 public void goBack() { 903 checkThread(); 904 mProvider.goBack(); 905 } 906 907 /** 908 * Gets whether this WebView has a forward history item. 909 * 910 * @return true iff this Webview has a forward history item 911 */ 912 public boolean canGoForward() { 913 checkThread(); 914 return mProvider.canGoForward(); 915 } 916 917 /** 918 * Goes forward in the history of this WebView. 919 */ 920 public void goForward() { 921 checkThread(); 922 mProvider.goForward(); 923 } 924 925 /** 926 * Gets whether the page can go back or forward the given 927 * number of steps. 928 * 929 * @param steps the negative or positive number of steps to move the 930 * history 931 */ 932 public boolean canGoBackOrForward(int steps) { 933 checkThread(); 934 return mProvider.canGoBackOrForward(steps); 935 } 936 937 /** 938 * Goes to the history item that is the number of steps away from 939 * the current item. Steps is negative if backward and positive 940 * if forward. 941 * 942 * @param steps the number of steps to take back or forward in the back 943 * forward list 944 */ 945 public void goBackOrForward(int steps) { 946 checkThread(); 947 mProvider.goBackOrForward(steps); 948 } 949 950 /** 951 * Gets whether private browsing is enabled in this WebView. 952 */ 953 public boolean isPrivateBrowsingEnabled() { 954 checkThread(); 955 return mProvider.isPrivateBrowsingEnabled(); 956 } 957 958 /** 959 * Scrolls the contents of this WebView up by half the view size. 960 * 961 * @param top true to jump to the top of the page 962 * @return true if the page was scrolled 963 */ 964 public boolean pageUp(boolean top) { 965 checkThread(); 966 return mProvider.pageUp(top); 967 } 968 969 /** 970 * Scrolls the contents of this WebView down by half the page size. 971 * 972 * @param bottom true to jump to bottom of page 973 * @return true if the page was scrolled 974 */ 975 public boolean pageDown(boolean bottom) { 976 checkThread(); 977 return mProvider.pageDown(bottom); 978 } 979 980 /** 981 * Clears this WebView so that onDraw() will draw nothing but white background, 982 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY. 983 */ 984 public void clearView() { 985 checkThread(); 986 mProvider.clearView(); 987 } 988 989 /** 990 * Gets a new picture that captures the current display of this WebView. 991 * This is a copy of the display, and will be unaffected if this WebView 992 * later loads a different URL. 993 * 994 * @return a picture containing the current contents of this WebView. Note 995 * this picture is of the entire document, and is not restricted to 996 * the bounds of the view. 997 */ 998 public Picture capturePicture() { 999 checkThread(); 1000 return mProvider.capturePicture(); 1001 } 1002 1003 /** 1004 * Gets the current scale of this WebView. 1005 * 1006 * @return the current scale 1007 */ 1008 @ViewDebug.ExportedProperty(category = "webview") 1009 public float getScale() { 1010 checkThread(); 1011 return mProvider.getScale(); 1012 } 1013 1014 /** 1015 * Sets the initial scale for this WebView. 0 means default. If 1016 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1017 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1018 * WebView starts with this value as initial scale. 1019 * Please note that unlike the scale properties in the viewport meta tag, 1020 * this method doesn't take the screen density into account. 1021 * 1022 * @param scaleInPercent the initial scale in percent 1023 */ 1024 public void setInitialScale(int scaleInPercent) { 1025 checkThread(); 1026 mProvider.setInitialScale(scaleInPercent); 1027 } 1028 1029 /** 1030 * Invokes the graphical zoom picker widget for this WebView. This will 1031 * result in the zoom widget appearing on the screen to control the zoom 1032 * level of this WebView. 1033 */ 1034 public void invokeZoomPicker() { 1035 checkThread(); 1036 mProvider.invokeZoomPicker(); 1037 } 1038 1039 /** 1040 * Gets a HitTestResult based on the current cursor node. If a HTML::a 1041 * tag is found and the anchor has a non-JavaScript URL, the HitTestResult 1042 * type is set to SRC_ANCHOR_TYPE and the URL is set in the "extra" field. 1043 * If the anchor does not have a URL or if it is a JavaScript URL, the type 1044 * will be UNKNOWN_TYPE and the URL has to be retrieved through 1045 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1046 * found, the HitTestResult type is set to IMAGE_TYPE and the URL is set in 1047 * the "extra" field. A type of 1048 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a URL that has an image as 1049 * a child node. If a phone number is found, the HitTestResult type is set 1050 * to PHONE_TYPE and the phone number is set in the "extra" field of 1051 * HitTestResult. If a map address is found, the HitTestResult type is set 1052 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1053 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1054 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1055 * HitTestResult type is set to UNKNOWN_TYPE. 1056 */ 1057 public HitTestResult getHitTestResult() { 1058 checkThread(); 1059 return mProvider.getHitTestResult(); 1060 } 1061 1062 /** 1063 * Requests the anchor or image element URL at the last tapped point. 1064 * If hrefMsg is null, this method returns immediately and does not 1065 * dispatch hrefMsg to its target. If the tapped point hits an image, 1066 * an anchor, or an image in an anchor, the message associates 1067 * strings in named keys in its data. The value paired with the key 1068 * may be an empty string. 1069 * 1070 * @param hrefMsg the message to be dispatched with the result of the 1071 * request. The message data contains three keys. "url" 1072 * returns the anchor's href attribute. "title" returns the 1073 * anchor's text. "src" returns the image's src attribute. 1074 */ 1075 public void requestFocusNodeHref(Message hrefMsg) { 1076 checkThread(); 1077 mProvider.requestFocusNodeHref(hrefMsg); 1078 } 1079 1080 /** 1081 * Requests the URL of the image last touched by the user. msg will be sent 1082 * to its target with a String representing the URL as its object. 1083 * 1084 * @param msg the message to be dispatched with the result of the request 1085 * as the data member with "url" as key. The result can be null. 1086 */ 1087 public void requestImageRef(Message msg) { 1088 checkThread(); 1089 mProvider.requestImageRef(msg); 1090 } 1091 1092 /** 1093 * Gets the URL for the current page. This is not always the same as the URL 1094 * passed to WebViewClient.onPageStarted because although the load for 1095 * that URL has begun, the current page may not have changed. 1096 * 1097 * @return the URL for the current page 1098 */ 1099 @ViewDebug.ExportedProperty(category = "webview") 1100 public String getUrl() { 1101 checkThread(); 1102 return mProvider.getUrl(); 1103 } 1104 1105 /** 1106 * Gets the original URL for the current page. This is not always the same 1107 * as the URL passed to WebViewClient.onPageStarted because although the 1108 * load for that URL has begun, the current page may not have changed. 1109 * Also, there may have been redirects resulting in a different URL to that 1110 * originally requested. 1111 * 1112 * @return the URL that was originally requested for the current page 1113 */ 1114 @ViewDebug.ExportedProperty(category = "webview") 1115 public String getOriginalUrl() { 1116 checkThread(); 1117 return mProvider.getOriginalUrl(); 1118 } 1119 1120 /** 1121 * Gets the title for the current page. This is the title of the current page 1122 * until WebViewClient.onReceivedTitle is called. 1123 * 1124 * @return the title for the current page 1125 */ 1126 @ViewDebug.ExportedProperty(category = "webview") 1127 public String getTitle() { 1128 checkThread(); 1129 return mProvider.getTitle(); 1130 } 1131 1132 /** 1133 * Gets the favicon for the current page. This is the favicon of the current 1134 * page until WebViewClient.onReceivedIcon is called. 1135 * 1136 * @return the favicon for the current page 1137 */ 1138 public Bitmap getFavicon() { 1139 checkThread(); 1140 return mProvider.getFavicon(); 1141 } 1142 1143 /** 1144 * Gets the touch icon URL for the apple-touch-icon <link> element, or 1145 * a URL on this site's server pointing to the standard location of a 1146 * touch icon. 1147 * 1148 * @hide 1149 */ 1150 public String getTouchIconUrl() { 1151 return mProvider.getTouchIconUrl(); 1152 } 1153 1154 /** 1155 * Gets the progress for the current page. 1156 * 1157 * @return the progress for the current page between 0 and 100 1158 */ 1159 public int getProgress() { 1160 checkThread(); 1161 return mProvider.getProgress(); 1162 } 1163 1164 /** 1165 * Gets the height of the HTML content. 1166 * 1167 * @return the height of the HTML content 1168 */ 1169 @ViewDebug.ExportedProperty(category = "webview") 1170 public int getContentHeight() { 1171 checkThread(); 1172 return mProvider.getContentHeight(); 1173 } 1174 1175 /** 1176 * Gets the width of the HTML content. 1177 * 1178 * @return the width of the HTML content 1179 * @hide 1180 */ 1181 @ViewDebug.ExportedProperty(category = "webview") 1182 public int getContentWidth() { 1183 return mProvider.getContentWidth(); 1184 } 1185 1186 /** 1187 * Pauses all layout, parsing, and JavaScript timers for all WebViews. This 1188 * is a global requests, not restricted to just this WebView. This can be 1189 * useful if the application has been paused. 1190 */ 1191 public void pauseTimers() { 1192 checkThread(); 1193 mProvider.pauseTimers(); 1194 } 1195 1196 /** 1197 * Resumes all layout, parsing, and JavaScript timers for all WebViews. 1198 * This will resume dispatching all timers. 1199 */ 1200 public void resumeTimers() { 1201 checkThread(); 1202 mProvider.resumeTimers(); 1203 } 1204 1205 /** 1206 * Pauses any extra processing associated with this WebView and its 1207 * associated DOM, plugins, JavaScript etc. For example, if this WebView is 1208 * taken offscreen, this could be called to reduce unnecessary CPU or 1209 * network traffic. When this WebView is again "active", call onResume(). 1210 * Note that this differs from pauseTimers(), which affects all WebViews. 1211 */ 1212 public void onPause() { 1213 checkThread(); 1214 mProvider.onPause(); 1215 } 1216 1217 /** 1218 * Resumes a WebView after a previous call to onPause(). 1219 */ 1220 public void onResume() { 1221 checkThread(); 1222 mProvider.onResume(); 1223 } 1224 1225 /** 1226 * Gets whether this WebView is paused, meaning onPause() was called. 1227 * Calling onResume() sets the paused state back to false. 1228 * 1229 * @hide 1230 */ 1231 public boolean isPaused() { 1232 return mProvider.isPaused(); 1233 } 1234 1235 /** 1236 * Informs this WebView that memory is low so that it can free any available 1237 * memory. 1238 */ 1239 public void freeMemory() { 1240 checkThread(); 1241 mProvider.freeMemory(); 1242 } 1243 1244 /** 1245 * Clears the resource cache. Note that the cache is per-application, so 1246 * this will clear the cache for all WebViews used. 1247 * 1248 * @param includeDiskFiles if false, only the RAM cache is cleared 1249 */ 1250 public void clearCache(boolean includeDiskFiles) { 1251 checkThread(); 1252 mProvider.clearCache(includeDiskFiles); 1253 } 1254 1255 /** 1256 * Makes sure that clearing the form data removes the adapter from the 1257 * currently focused textfield if there is one. 1258 */ 1259 public void clearFormData() { 1260 checkThread(); 1261 mProvider.clearFormData(); 1262 } 1263 1264 /** 1265 * Tells this WebView to clear its internal back/forward list. 1266 */ 1267 public void clearHistory() { 1268 checkThread(); 1269 mProvider.clearHistory(); 1270 } 1271 1272 /** 1273 * Clears the SSL preferences table stored in response to proceeding with 1274 * SSL certificate errors. 1275 */ 1276 public void clearSslPreferences() { 1277 checkThread(); 1278 mProvider.clearSslPreferences(); 1279 } 1280 1281 /** 1282 * Gets the WebBackForwardList for this WebView. This contains the 1283 * back/forward list for use in querying each item in the history stack. 1284 * This is a copy of the private WebBackForwardList so it contains only a 1285 * snapshot of the current state. Multiple calls to this method may return 1286 * different objects. The object returned from this method will not be 1287 * updated to reflect any new state. 1288 */ 1289 public WebBackForwardList copyBackForwardList() { 1290 checkThread(); 1291 return mProvider.copyBackForwardList(); 1292 1293 } 1294 1295 /** 1296 * Registers the listener to be notified as find-on-page operations 1297 * progress. This will replace the current listener. 1298 * 1299 * @param listener an implementation of {@link FindListener} 1300 */ 1301 public void setFindListener(FindListener listener) { 1302 checkThread(); 1303 mProvider.setFindListener(listener); 1304 } 1305 1306 /** 1307 * Highlights and scrolls to the next match found by {@link #findAll} or 1308 * {@link #findAllAsync}, wrapping around page boundaries as necessary. 1309 * Notifies any registered {@link FindListener}. If neither 1310 * {@link #findAll} nor {@link #findAllAsync(String)} has been called yet, 1311 * or if {@link #clearMatches} has been called since the last find 1312 * operation, this function does nothing. 1313 * 1314 * @param forward the direction to search 1315 * @see #setFindListener 1316 */ 1317 public void findNext(boolean forward) { 1318 checkThread(); 1319 mProvider.findNext(forward); 1320 } 1321 1322 /** 1323 * Finds all instances of find on the page and highlights them. 1324 * Notifies any registered {@link FindListener}. 1325 * 1326 * @param find the string to find 1327 * @return the number of occurances of the String "find" that were found 1328 * @deprecated {@link #findAllAsync} is preferred. 1329 * @see #setFindListener 1330 */ 1331 @Deprecated 1332 public int findAll(String find) { 1333 checkThread(); 1334 StrictMode.noteSlowCall("findAll blocks UI: prefer findAllAsync"); 1335 return mProvider.findAll(find); 1336 } 1337 1338 /** 1339 * Finds all instances of find on the page and highlights them, 1340 * asynchronously. Notifies any registered {@link FindListener}. 1341 * Successive calls to this or {@link #findAll} will cancel any 1342 * pending searches. 1343 * 1344 * @param find the string to find. 1345 * @see #setFindListener 1346 */ 1347 public void findAllAsync(String find) { 1348 checkThread(); 1349 mProvider.findAllAsync(find); 1350 } 1351 1352 /** 1353 * Starts an ActionMode for finding text in this WebView. Only works if this 1354 * WebView is attached to the view system. 1355 * 1356 * @param text if non-null, will be the initial text to search for. 1357 * Otherwise, the last String searched for in this WebView will 1358 * be used to start. 1359 * @param showIme if true, show the IME, assuming the user will begin typing. 1360 * If false and text is non-null, perform a find all. 1361 * @return true if the find dialog is shown, false otherwise 1362 */ 1363 public boolean showFindDialog(String text, boolean showIme) { 1364 checkThread(); 1365 return mProvider.showFindDialog(text, showIme); 1366 } 1367 1368 /** 1369 * Gets the first substring consisting of the address of a physical 1370 * location. Currently, only addresses in the United States are detected, 1371 * and consist of: 1372 * <ul> 1373 * <li>a house number</li> 1374 * <li>a street name</li> 1375 * <li>a street type (Road, Circle, etc), either spelled out or 1376 * abbreviated</li> 1377 * <li>a city name</li> 1378 * <li>a state or territory, either spelled out or two-letter abbr</li> 1379 * <li>an optional 5 digit or 9 digit zip code</li> 1380 * </ul> 1381 * All names must be correctly capitalized, and the zip code, if present, 1382 * must be valid for the state. The street type must be a standard USPS 1383 * spelling or abbreviation. The state or territory must also be spelled 1384 * or abbreviated using USPS standards. The house number may not exceed 1385 * five digits. 1386 * 1387 * @param addr the string to search for addresses 1388 * @return the address, or if no address is found, null 1389 */ 1390 public static String findAddress(String addr) { 1391 checkThread(); 1392 return getFactory().getStatics().findAddress(addr); 1393 } 1394 1395 /** 1396 * Clears the highlighting surrounding text matches created by 1397 * {@link #findAll} or {@link #findAllAsync}. 1398 */ 1399 public void clearMatches() { 1400 checkThread(); 1401 mProvider.clearMatches(); 1402 } 1403 1404 /** 1405 * Queries the document to see if it contains any image references. The 1406 * message object will be dispatched with arg1 being set to 1 if images 1407 * were found and 0 if the document does not reference any images. 1408 * 1409 * @param response the message that will be dispatched with the result 1410 */ 1411 public void documentHasImages(Message response) { 1412 checkThread(); 1413 mProvider.documentHasImages(response); 1414 } 1415 1416 /** 1417 * Sets the WebViewClient that will receive various notifications and 1418 * requests. This will replace the current handler. 1419 * 1420 * @param client an implementation of WebViewClient 1421 */ 1422 public void setWebViewClient(WebViewClient client) { 1423 checkThread(); 1424 mProvider.setWebViewClient(client); 1425 } 1426 1427 /** 1428 * Registers the interface to be used when content can not be handled by 1429 * the rendering engine, and should be downloaded instead. This will replace 1430 * the current handler. 1431 * 1432 * @param listener an implementation of DownloadListener 1433 */ 1434 public void setDownloadListener(DownloadListener listener) { 1435 checkThread(); 1436 mProvider.setDownloadListener(listener); 1437 } 1438 1439 /** 1440 * Sets the chrome handler. This is an implementation of WebChromeClient for 1441 * use in handling JavaScript dialogs, favicons, titles, and the progress. 1442 * This will replace the current handler. 1443 * 1444 * @param client an implementation of WebChromeClient 1445 */ 1446 public void setWebChromeClient(WebChromeClient client) { 1447 checkThread(); 1448 mProvider.setWebChromeClient(client); 1449 } 1450 1451 /** 1452 * Sets the Picture listener. This is an interface used to receive 1453 * notifications of a new Picture. 1454 * 1455 * @param listener an implementation of WebView.PictureListener 1456 * @deprecated This method is now obsolete. 1457 */ 1458 @Deprecated 1459 public void setPictureListener(PictureListener listener) { 1460 checkThread(); 1461 mProvider.setPictureListener(listener); 1462 } 1463 1464 /** 1465 * Injects the supplied Java object into this WebView. The object is 1466 * injected into the JavaScript context of the main frame, using the 1467 * supplied name. This allows the Java object's public methods to be 1468 * accessed from JavaScript. Note that that injected objects will not 1469 * appear in JavaScript until the page is next (re)loaded. For example: 1470 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 1471 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 1472 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 1473 * <p> 1474 * <strong>IMPORTANT:</strong> 1475 * <ul> 1476 * <li> This method can be used to allow JavaScript to control the host 1477 * application. This is a powerful feature, but also presents a security 1478 * risk, particularly as JavaScript could use reflection to access an 1479 * injected object's public fields. Use of this method in a WebView 1480 * containing untrusted content could allow an attacker to manipulate the 1481 * host application in unintended ways, executing Java code with the 1482 * permissions of the host application. Use extreme care when using this 1483 * method in a WebView which could contain untrusted content.</li> 1484 * <li> JavaScript interacts with Java object on a private, background 1485 * thread of this WebView. Care is therefore required to maintain thread 1486 * safety.</li> 1487 * </ul> 1488 * 1489 * @param object the Java object to inject into this WebView's JavaScript 1490 * context. Null values are ignored. 1491 * @param name the name used to expose the object in JavaScript 1492 */ 1493 public void addJavascriptInterface(Object object, String name) { 1494 checkThread(); 1495 mProvider.addJavascriptInterface(object, name); 1496 } 1497 1498 /** 1499 * Removes a previously injected Java object from this WebView. Note that 1500 * the removal will not be reflected in JavaScript until the page is next 1501 * (re)loaded. See {@link #addJavascriptInterface}. 1502 * 1503 * @param name the name used to expose the object in JavaScript 1504 */ 1505 public void removeJavascriptInterface(String name) { 1506 checkThread(); 1507 mProvider.removeJavascriptInterface(name); 1508 } 1509 1510 /** 1511 * Gets the WebSettings object used to control the settings for this 1512 * WebView. 1513 * 1514 * @return a WebSettings object that can be used to control this WebView's 1515 * settings 1516 */ 1517 public WebSettings getSettings() { 1518 checkThread(); 1519 return mProvider.getSettings(); 1520 } 1521 1522 /** 1523 * Gets the list of currently loaded plugins. 1524 * 1525 * @return the list of currently loaded plugins 1526 * @deprecated This was used for Gears, which has been deprecated. 1527 * @hide 1528 */ 1529 @Deprecated 1530 public static synchronized PluginList getPluginList() { 1531 checkThread(); 1532 return new PluginList(); 1533 } 1534 1535 /** 1536 * @deprecated This was used for Gears, which has been deprecated. 1537 * @hide 1538 */ 1539 @Deprecated 1540 public void refreshPlugins(boolean reloadOpenPages) { 1541 checkThread(); 1542 } 1543 1544 /** 1545 * Puts this WebView into text selection mode. Do not rely on this 1546 * functionality; it will be deprecated in the future. 1547 * 1548 * @deprecated This method is now obsolete. 1549 */ 1550 @Deprecated 1551 public void emulateShiftHeld() { 1552 checkThread(); 1553 mProvider.emulateShiftHeld(); 1554 } 1555 1556 /** 1557 * @deprecated WebView no longer needs to implement 1558 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1559 */ 1560 @Override 1561 // Cannot add @hide as this can always be accessed via the interface. 1562 @Deprecated 1563 public void onChildViewAdded(View parent, View child) {} 1564 1565 /** 1566 * @deprecated WebView no longer needs to implement 1567 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1568 */ 1569 @Override 1570 // Cannot add @hide as this can always be accessed via the interface. 1571 @Deprecated 1572 public void onChildViewRemoved(View p, View child) {} 1573 1574 /** 1575 * @deprecated WebView should not have implemented 1576 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 1577 */ 1578 @Override 1579 // Cannot add @hide as this can always be accessed via the interface. 1580 @Deprecated 1581 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 1582 } 1583 1584 public void setMapTrackballToArrowKeys(boolean setMap) { 1585 checkThread(); 1586 mProvider.setMapTrackballToArrowKeys(setMap); 1587 } 1588 1589 1590 public void flingScroll(int vx, int vy) { 1591 checkThread(); 1592 mProvider.flingScroll(vx, vy); 1593 } 1594 1595 /** 1596 * Gets the zoom controls for this WebView, as a separate View. The caller 1597 * is responsible for inserting this View into the layout hierarchy. 1598 * <p/> 1599 * API level {@link android.os.Build.VERSION_CODES#CUPCAKE} introduced 1600 * built-in zoom mechanisms for the WebView, as opposed to these separate 1601 * zoom controls. The built-in mechanisms are preferred and can be enabled 1602 * using {@link WebSettings#setBuiltInZoomControls}. 1603 * 1604 * @deprecated the built-in zoom mechanisms are preferred 1605 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} 1606 */ 1607 @Deprecated 1608 public View getZoomControls() { 1609 checkThread(); 1610 return mProvider.getZoomControls(); 1611 } 1612 1613 /** 1614 * Gets whether this WebView can be zoomed in. 1615 * 1616 * @return true if this WebView can be zoomed in 1617 */ 1618 public boolean canZoomIn() { 1619 checkThread(); 1620 return mProvider.canZoomIn(); 1621 } 1622 1623 /** 1624 * Gets whether this WebView can be zoomed out. 1625 * 1626 * @return true if this WebView can be zoomed out 1627 */ 1628 public boolean canZoomOut() { 1629 checkThread(); 1630 return mProvider.canZoomOut(); 1631 } 1632 1633 /** 1634 * Performs zoom in in this WebView. 1635 * 1636 * @return true if zoom in succeeds, false if no zoom changes 1637 */ 1638 public boolean zoomIn() { 1639 checkThread(); 1640 return mProvider.zoomIn(); 1641 } 1642 1643 /** 1644 * Performs zoom out in this WebView. 1645 * 1646 * @return true if zoom out succeeds, false if no zoom changes 1647 */ 1648 public boolean zoomOut() { 1649 checkThread(); 1650 return mProvider.zoomOut(); 1651 } 1652 1653 /** 1654 * @deprecated This method is now obsolete. 1655 */ 1656 @Deprecated 1657 public void debugDump() { 1658 checkThread(); 1659 mProvider.debugDump(); 1660 } 1661 1662 /** 1663 * See {@link ViewDebug.HierarchyHandler#dumpViewHierarchyWithProperties(BufferedWriter, int)} 1664 * @hide 1665 */ 1666 @Override 1667 public void dumpViewHierarchyWithProperties(BufferedWriter out, int level) { 1668 mProvider.dumpViewHierarchyWithProperties(out, level); 1669 } 1670 1671 /** 1672 * See {@link ViewDebug.HierarchyHandler#findHierarchyView(String, int)} 1673 * @hide 1674 */ 1675 @Override 1676 public View findHierarchyView(String className, int hashCode) { 1677 return mProvider.findHierarchyView(className, hashCode); 1678 } 1679 1680 //------------------------------------------------------------------------- 1681 // Interface for WebView providers 1682 //------------------------------------------------------------------------- 1683 1684 /** 1685 * Gets the WebViewProvider. Used by providers to obtain the underlying 1686 * implementation, e.g. when the appliction responds to 1687 * WebViewClient.onCreateWindow() request. 1688 * 1689 * @hide WebViewProvider is not public API. 1690 */ 1691 public WebViewProvider getWebViewProvider() { 1692 return mProvider; 1693 } 1694 1695 /** 1696 * Callback interface, allows the provider implementation to access non-public methods 1697 * and fields, and make super-class calls in this WebView instance. 1698 * @hide Only for use by WebViewProvider implementations 1699 */ 1700 public class PrivateAccess { 1701 // ---- Access to super-class methods ---- 1702 public int super_getScrollBarStyle() { 1703 return WebView.super.getScrollBarStyle(); 1704 } 1705 1706 public void super_scrollTo(int scrollX, int scrollY) { 1707 WebView.super.scrollTo(scrollX, scrollY); 1708 } 1709 1710 public void super_computeScroll() { 1711 WebView.super.computeScroll(); 1712 } 1713 1714 public boolean super_performAccessibilityAction(int action, Bundle arguments) { 1715 return WebView.super.performAccessibilityAction(action, arguments); 1716 } 1717 1718 public boolean super_performLongClick() { 1719 return WebView.super.performLongClick(); 1720 } 1721 1722 public boolean super_setFrame(int left, int top, int right, int bottom) { 1723 return WebView.super.setFrame(left, top, right, bottom); 1724 } 1725 1726 public boolean super_dispatchKeyEvent(KeyEvent event) { 1727 return WebView.super.dispatchKeyEvent(event); 1728 } 1729 1730 public boolean super_onGenericMotionEvent(MotionEvent event) { 1731 return WebView.super.onGenericMotionEvent(event); 1732 } 1733 1734 public boolean super_requestFocus(int direction, Rect previouslyFocusedRect) { 1735 return WebView.super.requestFocus(direction, previouslyFocusedRect); 1736 } 1737 1738 public void super_setLayoutParams(ViewGroup.LayoutParams params) { 1739 WebView.super.setLayoutParams(params); 1740 } 1741 1742 // ---- Access to non-public methods ---- 1743 public void overScrollBy(int deltaX, int deltaY, 1744 int scrollX, int scrollY, 1745 int scrollRangeX, int scrollRangeY, 1746 int maxOverScrollX, int maxOverScrollY, 1747 boolean isTouchEvent) { 1748 WebView.this.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, 1749 maxOverScrollX, maxOverScrollY, isTouchEvent); 1750 } 1751 1752 public void awakenScrollBars(int duration) { 1753 WebView.this.awakenScrollBars(duration); 1754 } 1755 1756 public void awakenScrollBars(int duration, boolean invalidate) { 1757 WebView.this.awakenScrollBars(duration, invalidate); 1758 } 1759 1760 public float getVerticalScrollFactor() { 1761 return WebView.this.getVerticalScrollFactor(); 1762 } 1763 1764 public float getHorizontalScrollFactor() { 1765 return WebView.this.getHorizontalScrollFactor(); 1766 } 1767 1768 public void setMeasuredDimension(int measuredWidth, int measuredHeight) { 1769 WebView.this.setMeasuredDimension(measuredWidth, measuredHeight); 1770 } 1771 1772 public void onScrollChanged(int l, int t, int oldl, int oldt) { 1773 WebView.this.onScrollChanged(l, t, oldl, oldt); 1774 } 1775 1776 public int getHorizontalScrollbarHeight() { 1777 return WebView.this.getHorizontalScrollbarHeight(); 1778 } 1779 1780 // ---- Access to (non-public) fields ---- 1781 /** Raw setter for the scroll X value, without invoking onScrollChanged handlers etc. */ 1782 public void setScrollXRaw(int scrollX) { 1783 WebView.this.mScrollX = scrollX; 1784 } 1785 1786 /** Raw setter for the scroll Y value, without invoking onScrollChanged handlers etc. */ 1787 public void setScrollYRaw(int scrollY) { 1788 WebView.this.mScrollY = scrollY; 1789 } 1790 1791 } 1792 1793 //------------------------------------------------------------------------- 1794 // Private internal stuff 1795 //------------------------------------------------------------------------- 1796 1797 private WebViewProvider mProvider; 1798 1799 private void ensureProviderCreated() { 1800 checkThread(); 1801 if (mProvider == null) { 1802 // As this can get called during the base class constructor chain, pass the minimum 1803 // number of dependencies here; the rest are deferred to init(). 1804 mProvider = getFactory().createWebView(this, new PrivateAccess()); 1805 } 1806 } 1807 1808 private static synchronized WebViewFactoryProvider getFactory() { 1809 // For now the main purpose of this function (and the factory abstration) is to keep 1810 // us honest and minimize usage of WebViewClassic internals when binding the proxy. 1811 checkThread(); 1812 return WebViewFactory.getProvider(); 1813 } 1814 1815 private static void checkThread() { 1816 if (Looper.myLooper() != Looper.getMainLooper()) { 1817 Throwable throwable = new Throwable( 1818 "Warning: A WebView method was called on thread '" + 1819 Thread.currentThread().getName() + "'. " + 1820 "All WebView methods must be called on the UI thread. " + 1821 "Future versions of WebView may not support use on other threads."); 1822 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 1823 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 1824 } 1825 } 1826 1827 //------------------------------------------------------------------------- 1828 // Override View methods 1829 //------------------------------------------------------------------------- 1830 1831 // TODO: Add a test that enumerates all methods in ViewDelegte & ScrollDelegate, and ensures 1832 // there's a corresponding override (or better, caller) for each of them in here. 1833 1834 @Override 1835 protected void onAttachedToWindow() { 1836 super.onAttachedToWindow(); 1837 mProvider.getViewDelegate().onAttachedToWindow(); 1838 } 1839 1840 @Override 1841 protected void onDetachedFromWindow() { 1842 mProvider.getViewDelegate().onDetachedFromWindow(); 1843 super.onDetachedFromWindow(); 1844 } 1845 1846 @Override 1847 public void setLayoutParams(ViewGroup.LayoutParams params) { 1848 mProvider.getViewDelegate().setLayoutParams(params); 1849 } 1850 1851 @Override 1852 public void setOverScrollMode(int mode) { 1853 super.setOverScrollMode(mode); 1854 // This method may called in the constructor chain, before the WebView provider is 1855 // created. (Fortunately, this is the only method we override that can get called by 1856 // any of the base class constructors). 1857 ensureProviderCreated(); 1858 mProvider.getViewDelegate().setOverScrollMode(mode); 1859 } 1860 1861 @Override 1862 public void setScrollBarStyle(int style) { 1863 mProvider.getViewDelegate().setScrollBarStyle(style); 1864 super.setScrollBarStyle(style); 1865 } 1866 1867 @Override 1868 protected int computeHorizontalScrollRange() { 1869 return mProvider.getScrollDelegate().computeHorizontalScrollRange(); 1870 } 1871 1872 @Override 1873 protected int computeHorizontalScrollOffset() { 1874 return mProvider.getScrollDelegate().computeHorizontalScrollOffset(); 1875 } 1876 1877 @Override 1878 protected int computeVerticalScrollRange() { 1879 return mProvider.getScrollDelegate().computeVerticalScrollRange(); 1880 } 1881 1882 @Override 1883 protected int computeVerticalScrollOffset() { 1884 return mProvider.getScrollDelegate().computeVerticalScrollOffset(); 1885 } 1886 1887 @Override 1888 protected int computeVerticalScrollExtent() { 1889 return mProvider.getScrollDelegate().computeVerticalScrollExtent(); 1890 } 1891 1892 @Override 1893 public void computeScroll() { 1894 mProvider.getScrollDelegate().computeScroll(); 1895 } 1896 1897 @Override 1898 public boolean onHoverEvent(MotionEvent event) { 1899 return mProvider.getViewDelegate().onHoverEvent(event); 1900 } 1901 1902 @Override 1903 public boolean onTouchEvent(MotionEvent event) { 1904 return mProvider.getViewDelegate().onTouchEvent(event); 1905 } 1906 1907 @Override 1908 public boolean onGenericMotionEvent(MotionEvent event) { 1909 return mProvider.getViewDelegate().onGenericMotionEvent(event); 1910 } 1911 1912 @Override 1913 public boolean onTrackballEvent(MotionEvent event) { 1914 return mProvider.getViewDelegate().onTrackballEvent(event); 1915 } 1916 1917 @Override 1918 public boolean onKeyDown(int keyCode, KeyEvent event) { 1919 return mProvider.getViewDelegate().onKeyDown(keyCode, event); 1920 } 1921 1922 @Override 1923 public boolean onKeyUp(int keyCode, KeyEvent event) { 1924 return mProvider.getViewDelegate().onKeyUp(keyCode, event); 1925 } 1926 1927 @Override 1928 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 1929 return mProvider.getViewDelegate().onKeyMultiple(keyCode, repeatCount, event); 1930 } 1931 1932 /* 1933 TODO: These are not currently implemented in WebViewClassic, but it seems inconsistent not 1934 to be delegating them too. 1935 1936 @Override 1937 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 1938 return mProvider.getViewDelegate().onKeyPreIme(keyCode, event); 1939 } 1940 @Override 1941 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 1942 return mProvider.getViewDelegate().onKeyLongPress(keyCode, event); 1943 } 1944 @Override 1945 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 1946 return mProvider.getViewDelegate().onKeyShortcut(keyCode, event); 1947 } 1948 */ 1949 1950 @Deprecated 1951 @Override 1952 public boolean shouldDelayChildPressedState() { 1953 return mProvider.getViewDelegate().shouldDelayChildPressedState(); 1954 } 1955 1956 @Override 1957 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1958 super.onInitializeAccessibilityNodeInfo(info); 1959 info.setClassName(WebView.class.getName()); 1960 mProvider.getViewDelegate().onInitializeAccessibilityNodeInfo(info); 1961 } 1962 1963 @Override 1964 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1965 super.onInitializeAccessibilityEvent(event); 1966 event.setClassName(WebView.class.getName()); 1967 mProvider.getViewDelegate().onInitializeAccessibilityEvent(event); 1968 } 1969 1970 @Override 1971 public boolean performAccessibilityAction(int action, Bundle arguments) { 1972 return mProvider.getViewDelegate().performAccessibilityAction(action, arguments); 1973 } 1974 1975 /** @hide */ 1976 @Override 1977 protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, 1978 int l, int t, int r, int b) { 1979 mProvider.getViewDelegate().onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b); 1980 } 1981 1982 @Override 1983 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) { 1984 mProvider.getViewDelegate().onOverScrolled(scrollX, scrollY, clampedX, clampedY); 1985 } 1986 1987 @Override 1988 protected void onWindowVisibilityChanged(int visibility) { 1989 super.onWindowVisibilityChanged(visibility); 1990 mProvider.getViewDelegate().onWindowVisibilityChanged(visibility); 1991 } 1992 1993 @Override 1994 protected void onDraw(Canvas canvas) { 1995 mProvider.getViewDelegate().onDraw(canvas); 1996 } 1997 1998 @Override 1999 public boolean performLongClick() { 2000 return mProvider.getViewDelegate().performLongClick(); 2001 } 2002 2003 @Override 2004 protected void onConfigurationChanged(Configuration newConfig) { 2005 mProvider.getViewDelegate().onConfigurationChanged(newConfig); 2006 } 2007 2008 @Override 2009 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 2010 return mProvider.getViewDelegate().onCreateInputConnection(outAttrs); 2011 } 2012 2013 @Override 2014 protected void onVisibilityChanged(View changedView, int visibility) { 2015 super.onVisibilityChanged(changedView, visibility); 2016 mProvider.getViewDelegate().onVisibilityChanged(changedView, visibility); 2017 } 2018 2019 @Override 2020 public void onWindowFocusChanged(boolean hasWindowFocus) { 2021 mProvider.getViewDelegate().onWindowFocusChanged(hasWindowFocus); 2022 super.onWindowFocusChanged(hasWindowFocus); 2023 } 2024 2025 @Override 2026 protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { 2027 mProvider.getViewDelegate().onFocusChanged(focused, direction, previouslyFocusedRect); 2028 super.onFocusChanged(focused, direction, previouslyFocusedRect); 2029 } 2030 2031 /** @hide */ 2032 @Override 2033 protected boolean setFrame(int left, int top, int right, int bottom) { 2034 return mProvider.getViewDelegate().setFrame(left, top, right, bottom); 2035 } 2036 2037 @Override 2038 protected void onSizeChanged(int w, int h, int ow, int oh) { 2039 super.onSizeChanged(w, h, ow, oh); 2040 mProvider.getViewDelegate().onSizeChanged(w, h, ow, oh); 2041 } 2042 2043 @Override 2044 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 2045 super.onScrollChanged(l, t, oldl, oldt); 2046 mProvider.getViewDelegate().onScrollChanged(l, t, oldl, oldt); 2047 } 2048 2049 @Override 2050 public boolean dispatchKeyEvent(KeyEvent event) { 2051 return mProvider.getViewDelegate().dispatchKeyEvent(event); 2052 } 2053 2054 @Override 2055 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 2056 return mProvider.getViewDelegate().requestFocus(direction, previouslyFocusedRect); 2057 } 2058 2059 @Deprecated 2060 @Override 2061 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2062 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 2063 mProvider.getViewDelegate().onMeasure(widthMeasureSpec, heightMeasureSpec); 2064 } 2065 2066 @Override 2067 public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) { 2068 return mProvider.getViewDelegate().requestChildRectangleOnScreen(child, rect, immediate); 2069 } 2070 2071 @Override 2072 public void setBackgroundColor(int color) { 2073 mProvider.getViewDelegate().setBackgroundColor(color); 2074 } 2075 2076 @Override 2077 public void setLayerType(int layerType, Paint paint) { 2078 super.setLayerType(layerType, paint); 2079 mProvider.getViewDelegate().setLayerType(layerType, paint); 2080 } 2081} 2082