{"id":1640,"date":"2016-07-22T16:39:00","date_gmt":"2016-07-22T08:39:00","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1640"},"modified":"2016-07-24T21:05:44","modified_gmt":"2016-07-24T13:05:44","slug":"android-webview-%e7%9b%b8%e5%85%b3%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1640","title":{"rendered":"Android WebView \u76f8\u5173\u77e5\u8bc6"},"content":{"rendered":"

\u4e00\u3001WebView\u57fa\u7840\u4f7f\u7528<\/h2>\n

WebView\u662f\u5b89\u5353\u4e2d\u7528\u6765\u663e\u793ahtml\u6587\u672c\u5185\u5bb9\u7684\u7684\u63a7\u4ef6\uff0c\u5bf9html5\u4e5f\u6709\u5f88\u597d\u7684\u652f\u6301\uff0cios\u7684\u63a7\u4ef6UIWebView\u5dee\u4e0d\u591a\u3002<\/p>\n

\u4f7f\u7528WebView\u5e76\u4e0d\u9700\u8981\u5f00\u901a\u7f51\u7edc\u6743\u9650<\/span><\/p>\n

\u7f51\u4e0a\u6709\u6587\u7ae0\u8bf4webview\u9700\u8981\u5f00\u901ainternet\u6743\u9650\uff0c\u5426\u5219\u4f1a\u51faWeb page not available\u9519\u8bef\uff0c\u8fd9\u662f\u4e0d\u5bf9\u7684\uff0c\u51fa\u73b0Web page not available\u5e76\u4e0d\u662f\u56e0\u4e3a\u4f7f\u7528\u4e86webview\uff0c\u800c\u662fwebview\u8bbf\u95ee\u4e86\u7f51\u7edc\uff0c\u5982\u679cwebview\u53ea\u662f\u52a0\u8f7d\u672c\u5730html\uff08\u6bd4\u5982assets\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\uff09\uff0c\u6216\u8005\u53ea\u662f\u52a0\u8f7d\u5e26\u6709html\u6587\u672c\u7684\u5b57\u7b26\u4e32\uff0c\u5373\u4f7f\u6ca1\u6709internet\u6743\u9650\uff0c\u4e5f\u4e0d\u4f1a\u62a5\u9519\u3002<\/p>\n

\u5982\u4f55\u8c03\u7528webview<\/span>
\nxml\u4e2d<\/p>\n

[java]<WebView
\n android:id="@+id\/blog_detail_webview"
\n android:layout_width="fill_parent"
\n android:layout_height="wrap_content"
\n android:background="#FFFFFF"\/>[\/java]<\/p>\n

activity\u4e2d<\/p>\n

[java]mWebView = (WebView)findViewById(R.id.blog_detail_webview);
\nmWebView.getSettings().setJavaScriptEnabled(false);
\nmWebView.getSettings().setSupportZoom(false);
\nmWebView.getSettings().setBuiltInZoomControls(false);
\nmWebView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);
\nmWebView.getSettings().setDefaultFontSize(18);[\/java]<\/p>\n

\u57fa\u672c\u8bbe\u7f6e<\/p>\n

\u4e0a\u9762\u7684java\u4ee3\u7801\u90e8\u5206\u76f8\u4fe1\u5927\u5bb6\u90fd\u61c2\uff0c\u53ef\u4ee5\u770b\u5230WebView \u548c\u5176\u4ed6\u63a7\u4ef6\u4e0d\u540c\u7684\u5730\u65b9\u5728\u4e8e\u5176\u5c5e\u6027\u8bbe\u7f6e\u662f\u8c03\u7528mWebView.getSettings()\u6765\u5b8c\u6210\u7684\uff0c\u4e0d\u77e5\u9053\u8c37\u6b4c\u8fd9\u6837\u8bbe\u8ba1\u7684\u7528\u610f\uff0c\u5176\u4e2d\uff1a<\/p>\n

[java]mWebView.getSettings().setJavaScriptEnabled(false);[\/java]<\/p>\n

\u8868\u793a\u4e0d\u652f\u6301js\uff0c\u5982\u679c\u60f3\u8ba9java\u548cjs\u4ea4\u4e92\u6216\u8005\u672c\u8eab\u5e0c\u671bjs\u5b8c\u6210\u4e00\u5b9a\u7684\u529f\u80fd\u8bf7\u628afalse\u6539\u4e3atrue\u3002<\/p>\n

[java]mWebView.getSettings().setSupportZoom(false);[\/java]<\/p>\n

\u8bbe\u7f6e\u662f\u5426\u652f\u6301\u7f29\u653e\uff0c\u6211\u8fd9\u91cc\u4e3afalse\uff0c\u9ed8\u8ba4\u4e3atrue\u3002<\/p>\n

[java]mWebView.getSettings().setBuiltInZoomControls(false);[\/java]<\/p>\n

\u8bbe\u7f6e\u662f\u5426\u663e\u793a\u7f29\u653e\u5de5\u5177\uff0c\u9ed8\u8ba4\u4e3afalse\u3002<\/p>\n

[java]mWebView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);[\/java]<\/p>\n

\u4e00\u822c\u5f88\u5c11\u4f1a\u7528\u5230\u8fd9\u4e2a\uff0c\u7528WebView\u7ec4\u4ef6\u663e\u793a\u666e\u901a\u7f51\u9875\u65f6\u4e00\u822c\u4f1a\u51fa\u73b0\u6a2a\u5411\u6eda\u52a8\u6761\uff0c\u8fd9\u6837\u4f1a\u5bfc\u81f4\u9875\u9762\u67e5\u770b\u8d77\u6765\u975e\u5e38\u4e0d\u65b9\u4fbf\u3002LayoutAlgorithm\u662f\u4e00\u4e2a\u679a\u4e3e\uff0c\u7528\u6765\u63a7\u5236html\u7684\u5e03\u5c40\uff0c\u603b\u5171\u6709\u4e09\u79cd\u7c7b\u578b\uff1a
\nNORMAL\uff1a\u6b63\u5e38\u663e\u793a\uff0c\u6ca1\u6709\u6e32\u67d3\u53d8\u5316\u3002
\nSINGLE_COLUMN\uff1a\u628a\u6240\u6709\u5185\u5bb9\u653e\u5230WebView\u7ec4\u4ef6\u7b49\u5bbd\u7684\u4e00\u5217\u4e2d\u3002
\nNARROW_COLUMNS\uff1a\u53ef\u80fd\u7684\u8bdd\uff0c\u4f7f\u6240\u6709\u5217\u7684\u5bbd\u5ea6\u4e0d\u8d85\u8fc7\u5c4f\u5e55\u5bbd\u5ea6\u3002<\/p>\n

[java]
\nmWebView.getSettings().setDefaultFontSize(18);[\/java]<\/p>\n

\u8bbe\u7f6e\u9ed8\u8ba4\u7684\u5b57\u4f53\u5927\u5c0f\uff0c\u9ed8\u8ba4\u4e3a16\uff0c\u6709\u6548\u503c\u533a\u95f4\u57281-72\u4e4b\u95f4\u3002<\/p>\n

\u52a0\u8f7d\u5185\u5bb9<\/span><\/p>\n

\uff081\uff09\u52a0\u8f7dassets\u76ee\u5f55\u4e0b\u7684\u672c\u5730\u7f51\u9875<\/p>\n

\u4e00\u822c\u6211\u4eec\u90fd\u662f\u628ahtml\u6587\u4ef6\u653e\u5728assets\u76ee\u5f55\u4e0b\uff0c WebView\u8c03\u7528assets\u76ee\u5f55\u4e0b\u7684\u672c\u5730\u7f51\u9875\u548c\u56fe\u7247\u7b49\u8d44\u6e90\u975e\u5e38\u65b9\u4fbf\uff0c\u4f7f\u7528\u5f62\u5982<\/p>\n

[java]mWebView.loadUrl("file:\/\/\/android_asset\/html\/test1.html");[\/java]<\/p>\n

\u7684\u8c03\u7528\u65b9\u6cd5\u5373\u53ef\u3002<\/p>\n

\uff082\uff09\u52a0\u8f7d\u8fdc\u7a0b\u7f51\u9875<\/p>\n

[java]mWebView.loadUrl("http:\/\/www.google.com");[\/java]<\/p>\n

\uff083\uff09\u4f7f\u7528 LoadData \u6216\u8005 loadDataWithBaseURL\u65b9\u6cd5\u52a0\u8f7d\u5185\u5bb9<\/p>\n

\u6709\u65f6\u5019\u6211\u4eec\u7684webview\u53ef\u80fd\u53ea\u662fhtml\u7247\u6bb5\uff0c\u800c\u4e0d\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u7f51\u9875\uff0c\u4e8b\u5b9e\u4e0a\u7edd\u5927\u591a\u6570\u65f6\u5019\u90fd\u662f\u5982\u6b64\uff0c\u5b8c\u6574\u7684\u7f51\u9875\u65e0\u9700\u505a\u6210\u5e94\u7528\uff0c\u800c\u76f4\u63a5\u5728\u6d4f\u89c8\u5668\u8bbf\u95ee\u3002<\/p>\n

\u8fd9\u79cd\u60c5\u51b5\u6211\u4eec\u4f7f\u7528 LoadData \u6216\u8005 loadDataWithBaseURL\u65b9\u6cd5\uff0c\u540e\u8005\u7528\u7684\u6700\u591a\uff1a<\/p>\n

[java]
\nvoid loadDataWithBaseURL (String baseUrl, String data, String mimeType, String encoding, String historyUrl)<\/p>\n

loadDataWithBaseURL()\u6bd4loadData()\u591a\u4e24\u4e2a\u53c2\u6570\uff0c\u53ef\u4ee5\u6307\u5b9aHTML\u4ee3\u7801\u7247\u6bb5\u4e2d\u76f8\u5173\u8d44\u6e90\u7684\u76f8\u5bf9\u6839\u8def\u5f84\uff0c\u4e5f\u53ef\u4ee5\u6307\u5b9a\u5386\u53f2Url\uff0c\u5176\u4f59\u4e09\u4e2a\u53c2\u6570\u76f8\u540c\u3002[\/java]<\/p>\n

\u8fd9\u91cc\u4e3b\u8981\u6ce8\u610f\u53c2\u6570baseUrl\uff0cbaseUrl\u6307\u5b9a\u4e86\u4f60\u7684data\u53c2\u6570\u4e2d\u6570\u636e\u662f\u4ee5\u4ec0\u4e48\u5730\u5740\u4e3a\u57fa\u51c6\u7684\uff0c\u56e0\u4e3adata\u4e2d\u7684\u6570\u636e\u53ef\u80fd\u4f1a\u6709\u8d85\u94fe\u63a5\u6216\u8005\u662fimage\u5143\u7d20\uff0c\u800c\u5f88\u591a\u7f51\u7ad9\u7684\u5730\u5740\u90fd\u662f\u7528\u7684\u76f8\u5bf9\u8def\u5f84\uff0c\u5982\u679c\u6ca1\u6709baseUrl\uff0cwebview\u5c06\u8bbf\u95ee\u4e0d\u5230\u8fd9\u4e9b\u8d44\u6e90\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/span><\/p>\n

[java]
\nString body ="\u793a\u4f8b\uff1a\u8fd9\u91cc\u6709\u4e2aimg\u6807\u7b7e\uff0c\u5730\u5740\u662f\u76f8\u5bf9\u8def\u5f84<img src=’\/uploads\/allimg\/130923\/1FP02V7-0.png’ \/>";
\nmWebView.loadDataWithBaseURL("http:\/\/www.jcodecraeer.com", body, "text\/html", "utf-8",null);[\/java]<\/p>\n

\u5982\u679cbaseUrl\u6ca1\u6709\u6307\u5b9a\u4e3ahttp:\/\/www.jcodecraeer.com\uff0c\u90a3\u4e48\u8fd9\u5f20\u56fe\u7247\u5c06\u663e\u793a\u4e0d\u51fa\u6765\u3002<\/p>\n

\u4e0a\u9762\u7684\u4f8b\u5b50\u5176\u5b9e\u6f14\u793a\u4e86loadDataWithBaseURL\u7684\u7528\u6cd5\uff0c\u6211\u4eec\u76f4\u63a5\u52a0\u8f7d\u4e00\u4e2a\u5b57\u7b26\u4e32\u91cc\u9762\u7684html\u5185\u5bb9\uff0c\u800c\u6709\u4e9b\u65f6\u5019\u8fd9\u4e9b\u5185\u5bb9\u662f\u4eceassets\u76ee\u5f55\u4e0b\u7684\u672c\u5730\u7f51\u9875\u6587\u4ef6\u4e2d\u8bfb\u53d6\uff0c\u4e0b\u9762\u6211\u4eec\u5c06html\/test1.html\u4e2d\u7684\u5185\u5bb9\u901a\u8fc7LoadData\u6765\u52a0\u8f7d\uff1a<\/p>\n

[java]<\/p>\n

String data = "";
\ntry {
\n \/\/ \u8bfb\u53d6assets\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u9700\u8981\u7528\u5230AssetManager\u5bf9\u8c61\u7684Open\u65b9\u6cd5\u6253\u5f00\u6587\u4ef6
\n InputStream is = getAssets().open("html\/test2.html");
\n \/\/ loadData()\u65b9\u6cd5\u9700\u8981\u7684\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u636e\u6240\u4ee5\u6211\u4eec\u9700\u8981\u628a\u6587\u4ef6\u8f6c\u6210\u5b57\u7b26\u4e32
\n ByteArrayBuffer baf = new ByteArrayBuffer(500);
\n int count = 0;
\n while ((count = is.read()) != -1) {
\n baf.append(count);
\n }
\n data = EncodingUtils.getString(baf.toByteArray(), "utf-8");
\n} catch (IOException e) {
\n e.printStackTrace();
\n}[\/java]<\/p>\n

\/\/ \u4e0b\u9762\u4e24\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5\u52a0\u8f7d\u6210\u529f
\nmWebView.loadData(data, “text\/html”, “utf-8”);
\n\/\/ wv.loadDataWithBaseURL(“”, data, “text\/html”, “utf-8”, “”);
\n\u8fd9\u79cd\u901a\u8fc7\u8bfb\u53d6\u6587\u4ef6\u518d\u7528loadData\u52a0\u8f7d\u5176\u5b9e\u548cmWebView.loadUrl(“file:\/\/\/android_asset\/html\/test1.html”)\u662f\u4e00\u81f4\u7684\uff0c\u53ea\u4e0d\u8fc7loadData\u65b9\u5f0f\u56e0\u4e3a\u6ca1\u6709\u6307\u5b9a\u5730\u5740\u7684\u57fa\u51c6url\uff0chtml\/test1.html\u6587\u4ef6\u4e2d\u4e00\u4e9b\u8d44\u6e90\u6587\u4ef6\u6216\u8005\u94fe\u63a5\u5730\u5740\u4f1a\u5931\u6548\u3002<\/p>\n

loadDataWithBaseURL\u548cloadData\u4e24\u4e2a\u65b9\u6cd5\u52a0\u8f7d\u7684HTML\u4ee3\u7801\u7247\u6bb5\u7684\u4e0d\u540c\u70b9\u5728\u4e8e\uff0cloadData()\u4e2d\u7684html data\u4e2d\u4e0d\u80fd\u5305\u542b’#’, ‘%’, ‘\\’, ‘?’\u56db\u4e2d\u7279\u6b8a\u5b57\u7b26\uff0c\u5728\u5e73\u65f6\u6d4b\u8bd5\u65f6\uff0c\u4f60\u7684\u6570\u636e\u65f6\uff0c\u4f60\u7684\u6570\u636e\u91cc\u542b\u6709\u8fd9\u4e9b\u5b57\u7b26\uff0c\u4f46\u4e0d\u4f1a\u51fa\u95ee\u9898\uff0c\u5f53\u51fa\u95ee\u9898\u65f6\uff0c\u4f60\u53ef\u4ee5\u66ff\u6362\u4e0b\u3002
\n%\uff0c\u4f1a\u62a5\u627e\u4e0d\u5230\u9875\u9762\u9519\u8bef\uff0c\u9875\u9762\u5168\u662f\u4e71\u7801\u3002\u4e71\u7801\u6837\u5f0f\u89c1\u7b26\u4ef6\u3002<\/p>\n

#\uff0c\u4f1a\u8ba9\u4f60\u7684goBack\u5931\u6548\uff0c\u4f46canGoBAck\u662f\u53ef\u4ee5\u4f7f\u7528\u7684\u3002\u4e8e\u662f\u5c31\u4f1a\u4ea7\u751f\u8fd4\u56de\u6309\u94ae\u751f\u6548\uff0c\u4f46\u4e0d\u80fd\u8fd4\u56de\u7684\u60c5\u51b5\u3002<\/p>\n

WebView\u5185\u5bb9\u7684\u5904\u7406<\/span><\/p>\n

android \u4e2dwebView\u63a7\u4ef6 padding\u4e0d\u8d77\u4f5c\u7528
\n\u5728\u4e00\u4e2a\u5e03\u5c40\u6587\u4ef6\u4e2d\u6709\u4e00\u4e2aWebView\uff0c\u60f3\u4f7f\u7528padding\u5c5e\u6027\u8ba9\u5de6\u53f3\u5411\u5185\u7559\u51fa\u4e00\u4e9b\u7a7a\u767d\uff0c\u4f46\u662fpadding\u5c5e\u6027\u4e0d\u8d77\u5de6\u53f3\uff0c\u5185\u5bb9\u7167\u6837\u8d34\u8fb9\u663e\u793a\uff0c\u53cd\u800c\u79fb\u52a8\u4e86\u53f3\u8fb9\u6eda\u52a8\u6761\u7684\u4f4d\u7f6e\u3002android\u7684bug\uff0c\u7528\u4e00\u4e2a\u5916\u56f4\u7684layout\u5305\u542bwebview\uff0c\u53ef\u4ee5\u6709\u6240\u6539\u8fdb\uff0c\u4f46\u4e0d\u80fd\u5b8c\u5168\u89e3\u51b3\u3002\u5176\u5b9e\u6b63\u786e\u7684\u505a\u6cd5\u662f\u5728webView\u7684\u52a0\u8f7d\u7684css\u4e2d\u589e\u52a0padding,\u6ca1\u5fc5\u8981\u4e3a\u4e86padding\u800c\u66f4\u6539xml\u5e03\u5c40\u6587\u4ef6\u3002<\/p>\n

\u91cd\u5199shouldOverrideUrlLoading\u65f6\u6307\u5b9aurl<\/span><\/p>\n

\u6307\u5b9a\u53ea\u6709url\u91cc\u5305\u542beoe.cn\u7684\u65f6\u5019\u624d\u5728webview\u91cc\u6253\u5f00\uff0c\u5426\u5219\u8fd8\u662f\u542f\u52a8\u6d4f\u89c8\u5668\u6253\u5f00.<\/p>\n

[java]
\n@Override
\npublic boolean shouldOverrideUrlLoading(WebView view, String url) {
\n LogUtil.i(this, "url=" url);
\n if ( url.contains("eoe.cn") == true){
\n view.loadUrl(url);
\n return true;
\n }else{
\n Intent in = new Intent (Intent.ACTION_VIEW , Uri.parse(url));
\n startActivity(in);
\n return true;
\n }
\n}
\n[\/java]<\/p>\n

android:scrollbarStyle\u63a7\u5236\u6eda\u52a8\u6761\u4f4d\u7f6e<\/span><\/p>\n

WebView\u6709\u4e00\u4e2a\u8bbe\u7f6e\u6eda\u52a8\u6761\u4f4d\u7f6e\u7684\u5c5e\u6027\uff1aandroid:scrollbarStyle \u53ef\u4ee5\u662finsideOverlay\u53ef\u4ee5\u662foutsideOverlay\uff0c\u4e24\u4e2a\u7684\u533a\u522b\u662fSCROLLBARS_INSIDE_OVERLAY\u7684\u6837\u5f0f\u662f\u6eda\u52a8\u6761\u5728\u6574\u4e2apage\u91cc\uff0c\u7c7b\u4f3ccss\u4e2d\u7684padding\uff0c\u770b\u4ee3\u7801\u4e0b\u7684\u8fd9\u4e2a\u56fe\u5427\uff0c\u5f88\u6e05\u6670.<\/p>\n

[java]mWebView.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
\nmWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);[\/java]<\/p>\n

\u4e8c\u3001WebView\u548cJavaScrip\u4ea4\u4e92<\/h2>\n

\u5206\u4e24\u79cd\u60c5\u51b5
\n1\u3001js\u4e2d\u8c03\u7528android\u4e2d\u4ee3\u7801
\n2\u3001android\u4e2d\u8c03\u7528js\u4ee3\u7801<\/p>\n

\u7b2c\u4e00\u79cd\u60c5\u51b5js\u8c03\u7528android\u4ee3\u7801\u5173\u952e\u6b65\u9aa4:<\/h3>\n

Android\u7a0b\u5e8f:
\n\u7b2c\u4e00\u6b65\u8bbe\u7f6ewebview\u7684javascript\u4ee3\u7801\u53ef\u7528
\nmWebView.getSettings().setJavaScriptEnabled(true);<\/p>\n

\u7b2c\u4e8c\u6b65 \u5b9e\u73b0\u4ea4\u4e92\u63a5\u53e3<\/p>\n

[java]interface MyJavaScriptInterface {
\n void nativeMethod();
\n}
\nMyJavaScriptInterface myJavaScriptInterface = new MyJavaScriptInterface() {
\n @Override
\n public void nativeMethod() {
\n Toast.makeText(WebViewActivity.this,"\u5bf9\u8bdd\u6846",Toast.LENGTH_SHORT).show();
\n }<\/p>\n

};
\n[\/java]<\/p>\n

\u7b2c\u4e09\u6b65 \u6dfb\u52a0\u4ea4\u4e92\u63a5\u53e3\u5b9e\u4f8b\u5230webview\uff08\u5173\u952e\uff09<\/p>\n

[java]\/**
\n* WebView.addJavascriptInterface(Object,String)\u65b9\u6cd5
\n* Object \u4ea4\u4e92\u63a5\u53e3\u5bf9\u8c61
\n* String \u4ea4\u4e92\u63a5\u53e3\u540d\u79f0
\n*\/
\nmWebView.addJavascriptInterface(myJavaScriptInterface, "MyJavaScriptInterface");[\/java]<\/p>\n

html\u9875\u9762\u4ee3\u7801\u5b9e\u4f8b \uff1a<\/p>\n

[java]<html>
\n<head>
\n <meta http-equiv="Content-Type" content="text\/html; charset=UTF-8"\/>
\n <title>\u8868\u5355<\/title>
\n <script>
\n \/\/window:\u6d4f\u89c8\u5668\u7a97\u53e3\u5bf9\u8c61
\n\t\t\/\/MyJavaScriptInterface\uff1ajs\u4e0e\u539f\u751fandroid\u5e94\u7528\u4ea4\u4e92\u7684\u63a5\u53e3\u540d
\n\t\t\/\/showToast: js\u4e0e\u539f\u751fandroid\u5e94\u7528\u4ea4\u4e92\u7684\u63a5\u53e3\u7684\u65b9\u6cd5\u540d
\n\t\tfunction toNativeFunction()
\n\t {
\n\t\t\twindow.MyJavaScriptInterface.nativeMethod();
\n\t }<\/p>\n

<\/script>
\n <\/head><\/p>\n

<body>
\n <button onclick="toNativeFunction()">\u6267\u884c\u8df3\u8f6c<\/button>
\n <\/body>
\n<\/html>[\/java]<\/p>\n

\u7b2c\u4e8c\u79cd\u60c5\u51b5Android\u8c03\u7528js\u4ee3\u7801<\/h3>\n

mWebView.loadUrl(“javascript:testByNative()”);
\nhtml\u9875\u9762\u5b9e\u73b0javascript\u65b9\u6cd5testByNative<\/p>\n

[java] <script>
\n\t function testByNative(){
\n\t\twindow.location.href = "https:\/\/ai.zhousir.top"; \/\/\u8df3\u8f6c\u5230\u6307\u5b9aurl
\n\t }<\/p>\n

<\/script>[\/java]<\/p>\n

\u4e09\u3001WebView\u9875\u9762\u52a0\u8f7d\u6548\u679c<\/h2>\n

[java] public void setWebVieClient(){
\n mWebView.setWebViewClient(new WebViewClient(){
\n \/**
\n * \u8bf7\u6c42\u7684url\u5d4c\u5165webview\u663e\u793a
\n *\/
\n @Override
\n public boolean shouldOverrideUrlLoading(WebView webview, String url) {
\n webview.loadUrl(url);
\n return true;
\n }<\/p>\n

\/**
\n * \u52a0\u8f7dweb\u9875\u9762\u8c03\u7528
\n * @param view
\n * @param url
\n * @param favicon
\n *\/
\n @Override
\n public void onPageStarted(WebView view, String url, Bitmap favicon) {
\n super.onPageStarted(view, url, favicon);
\n mLoadTxt.setText("\u6b63\u5728\u52a0\u8f7d\u4e2d…..");
\n }<\/p>\n

\/**
\n * web\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u8c03\u7528
\n * @param view
\n * @param url
\n *\/
\n @Override
\n public void onPageFinished(WebView view, String url) {
\n super.onPageFinished(view, url);
\n mLoadTxt.setText("\u52a0\u8f7d\u5b8c\u6210");
\n }<\/p>\n

});<\/p>\n

mWebView.setWebChromeClient(new WebChromeClient(){
\n \/**
\n * web\u9875\u9762\u52a0\u8f7d\u8fdb\u5ea6\u8f6c\u53d8\u8c03\u7528
\n * @param view
\n * @param newProgress
\n *\/
\n @Override
\n public void onProgressChanged(WebView view, int newProgress) {
\n super.onProgressChanged(view, newProgress);
\n Logs.e("onProgressChanged :"+newProgress);
\n mLoadingSeekBar.setProgress(newProgress);
\n }
\n });<\/p>\n

}[\/java]<\/p>\n

[java]@Override
\n\/**
\n*\u5d4c\u5165\u7f51\u9875\u56de\u9000\u64cd\u4f5c
\n*\/
\npublic boolean onKeyDown(int keyCode, KeyEvent event) {
\n if(keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {
\n mWebView.goBack();\/\/ \u8fd4\u56de\u524d\u4e00\u4e2a\u9875\u9762
\n return true;
\n }
\n return super.onKeyDown(keyCode, event);
\n}[\/java]<\/p>\n

\u56db\u3001WebView\u7f13\u5b58\u76f8\u5173<\/h2>\n

\u5f53\u6211\u4eec\u52a0\u8f7dHtml\u65f6\u5019\uff0c\u4f1a\u5728\u6211\u4eecdata\/\u5e94\u7528package\u4e0b\u751f\u6210database\u4e0ecache\u4e24\u4e2a\u6587\u4ef6\u5939:
\n\u6211\u4eec\u8bf7\u6c42\u7684Url\u8bb0\u5f55\u662f\u4fdd\u5b58\u5728webviewCache.db\u91cc\uff0c\u800curl\u7684\u5185\u5bb9\u662f\u4fdd\u5b58\u5728webviewCache\u6587\u4ef6\u5939\u4e0b.
\nWebView\u4e2d\u5b58\u5728\u7740\u4e24\u79cd\u7f13\u5b58\uff1a\u7f51\u9875\u6570\u636e\u7f13\u5b58\uff08\u5b58\u50a8\u6253\u5f00\u8fc7\u7684\u9875\u9762\u53ca\u8d44\u6e90\uff09\u3001H5\u7f13\u5b58\uff08\u5373AppCache\uff09\u3002<\/p>\n

\u4e00\u3001\u7f51\u9875\u7f13\u5b58<\/span><\/p>\n

1\u3001\u7f13\u5b58\u6784\u6210
\n\/data\/data\/package_name\/cache\/
\n\/data\/data\/package_name\/database\/webview.db
\n\/data\/data\/package_name\/database\/webviewCache.db<\/p>\n

\u7efc\u5408\u53ef\u4ee5\u5f97\u77e5 webview \u4f1a\u5c06\u6211\u4eec\u6d4f\u89c8\u8fc7\u7684\u7f51\u9875url\u5df2\u7ecf\u7f51\u9875\u6587\u4ef6(css\u3001\u56fe\u7247\u3001js\u7b49)\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u8868\u4e2d<\/p>\n

\u7f13\u5b58\u6a21\u5f0f(5\u79cd)
\nLOAD_CACHE_ONLY: \u4e0d\u4f7f\u7528\u7f51\u7edc\uff0c\u53ea\u8bfb\u53d6\u672c\u5730\u7f13\u5b58\u6570\u636e
\nLOAD_DEFAULT: \u6839\u636ecache-control\u51b3\u5b9a\u662f\u5426\u4ece\u7f51\u7edc\u4e0a\u53d6\u6570\u636e\u3002
\nLOAD_CACHE_NORMAL: API level 17\u4e2d\u5df2\u7ecf\u5e9f\u5f03, \u4eceAPI level 11\u5f00\u59cb\u4f5c\u7528\u540cLOAD_DEFAULT\u6a21\u5f0f
\nLOAD_NO_CACHE: \u4e0d\u4f7f\u7528\u7f13\u5b58\uff0c\u53ea\u4ece\u7f51\u7edc\u83b7\u53d6\u6570\u636e.
\nLOAD_CACHE_ELSE_NETWORK\uff0c\u53ea\u8981\u672c\u5730\u6709\uff0c\u65e0\u8bba\u662f\u5426\u8fc7\u671f\uff0c\u6216\u8005no-cache\uff0c\u90fd\u4f7f\u7528\u7f13\u5b58\u4e2d\u7684\u6570\u636e\u3002
\n\u5982\uff1awww.taobao.com\u7684cache-control\u4e3ano-cache\uff0c\u5728\u6a21\u5f0fLOAD_DEFAULT\u4e0b\uff0c\u65e0\u8bba\u5982\u4f55\u90fd\u4f1a\u4ece\u7f51\u7edc\u4e0a\u53d6\u6570\u636e\uff0c\u5982\u679c\u6ca1\u6709\u7f51\u7edc\uff0c\u5c31\u4f1a\u51fa\u73b0\u9519\u8bef\u9875\u9762\uff1b\u5728LOAD_CACHE_ELSE_NETWORK\u6a21\u5f0f\u4e0b\uff0c\u65e0\u8bba\u662f\u5426\u6709\u7f51\u7edc\uff0c\u53ea\u8981\u672c\u5730\u6709\u7f13\u5b58\uff0c\u90fd\u4f7f\u7528\u7f13\u5b58\u3002\u672c\u5730\u6ca1\u6709\u7f13\u5b58\u65f6\u624d\u4ece\u7f51\u7edc\u4e0a\u83b7\u53d6\u3002
\nwww.360.com.cn\u7684cache-control\u4e3amax-age=60\uff0c\u5728\u4e24\u79cd\u6a21\u5f0f\u4e0b\u90fd\u4f7f\u7528\u672c\u5730\u7f13\u5b58\u6570\u636e\u3002<\/p>\n

\u603b\u7ed3\uff1a\u6839\u636e\u4ee5\u4e0a\u4e24\u79cd\u6a21\u5f0f\uff0c\u5efa\u8bae\u7f13\u5b58\u7b56\u7565\u4e3a\uff0c\u5224\u65ad\u662f\u5426\u6709\u7f51\u7edc\uff0c\u6709\u7684\u8bdd\uff0c\u4f7f\u7528LOAD_DEFAULT\uff0c\u65e0\u7f51\u7edc\u65f6\uff0c\u4f7f\u7528LOAD_CACHE_ELSE_NETWORK\u3002<\/p>\n

[java] mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT); \/\/ \u8bbe\u7f6e \u7f13\u5b58\u6a21\u5f0f
\n\t\t\/\/ \u5f00\u542f DOM storage API \u529f\u80fd
\n\t\tmWebView.getSettings().setDomStorageEnabled(true);
\n\t\t\/\/ \u5f00\u542f database storage API \u529f\u80fd
\n\t\tmWebView.getSettings().setDatabaseEnabled(true);
\n\t\tString cacheDirPath = getFilesDir().getAbsolutePath()+ APP_CACAHE_DIRNAME;
\n\t\t\/\/ String cacheDirPath = getCacheDir().getAbsolutePath()+Constant.APP_DB_DIRNAME;
\n\t\tLog.i(TAG, "cacheDirPath=" + cacheDirPath);
\n\t\t\/\/ \u8bbe\u7f6e\u6570\u636e\u5e93\u7f13\u5b58\u8def\u5f84
\n\t\tmWebView.getSettings().setDatabasePath(cacheDirPath);
\n\t\t\/\/ \u8bbe\u7f6e Application Caches \u7f13\u5b58\u76ee\u5f55
\n\t\tmWebView.getSettings().setAppCachePath(cacheDirPath);
\n\t\t\/\/ \u5f00\u542f Application Caches \u529f\u80fd
\n\t\tmWebView.getSettings().setAppCacheEnabled(true);[\/java]<\/p>\n

\u6e05\u9664WebView\u7f13\u5b58<\/span><\/p>\n

[java]\tpublic void clearWebViewCache() {<\/p>\n

\t\t\/\/ \u6e05\u7406Webview\u7f13\u5b58\u6570\u636e\u5e93
\n\t\ttry {
\n\t\t\tdeleteDatabase("webview.db");
\n\t\t\tdeleteDatabase("webviewCache.db");
\n\t\t} catch (Exception e) {
\n\t\t\te.printStackTrace();
\n\t\t}<\/p>\n

\t\t\/\/ WebView \u7f13\u5b58\u6587\u4ef6
\n\t\tFile appCacheDir = new File(getFilesDir().getAbsolutePath()
\n\t\t\t\t+ APP_CACAHE_DIRNAME);
\n\t\tLog.e(TAG, "appCacheDir path=" + appCacheDir.getAbsolutePath());<\/p>\n

\t\tFile webviewCacheDir = new File(getCacheDir().getAbsolutePath()
\n\t\t\t\t+ "\/webviewCache");
\n\t\tLog.e(TAG, "webviewCacheDir path=" + webviewCacheDir.getAbsolutePath());<\/p>\n

\t\t\/\/ \u5220\u9664webview \u7f13\u5b58\u76ee\u5f55
\n\t\tif (webviewCacheDir.exists()) {
\n\t\t\tdeleteFile(webviewCacheDir);
\n\t\t}
\n\t\t\/\/ \u5220\u9664webview \u7f13\u5b58 \u7f13\u5b58\u76ee\u5f55
\n\t\tif (appCacheDir.exists()) {
\n\t\t\tdeleteFile(appCacheDir);
\n\t\t}
\n\t}<\/p>\n

\t\/**
\n\t * \u9012\u5f52\u5220\u9664 \u6587\u4ef6\/\u6587\u4ef6\u5939
\n\t *
\n\t * @param file
\n\t *\/
\n\tpublic void deleteFile(File file) {<\/p>\n

\t\tLog.i(TAG, "delete file path=" + file.getAbsolutePath());<\/p>\n

\t\tif (file.exists()) {
\n\t\t\tif (file.isFile()) {
\n\t\t\t\tfile.delete();
\n\t\t\t} else if (file.isDirectory()) {
\n\t\t\t\tFile files[] = file.listFiles();
\n\t\t\t\tfor (int i = 0; i < files.length; i++) {
\n\t\t\t\t\tdeleteFile(files[i]);
\n\t\t\t\t}
\n\t\t\t}
\n\t\t\tfile.delete();
\n\t\t} else {
\n\t\t\tLog.e(TAG, "delete file no exists " + file.getAbsolutePath());
\n\t\t}
\n\t}
\n[\/java]<\/p>\n

\u4e94\u3001\u901a\u8fc7WebView\u81ea\u5e26\u7684\u7f13\u5b58\u529f\u80fd\u6765\u5b9e\u73b0\u79bb\u7ebf\u9605\u8bfb<\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001WebView\u57fa\u7840\u4f7f\u7528 WebView\u662f\u5b89\u5353\u4e2d\u7528\u6765\u663e\u793ahtml\u6587\u672c\u5185\u5bb9\u7684\u7684\u63a7\u4ef6\uff0c\u5bf9html5\u4e5f\u6709\u5f88\u597d\u7684\u652f\u6301 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1640"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1640"}],"version-history":[{"count":13,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1640\/revisions"}],"predecessor-version":[{"id":1660,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1640\/revisions\/1660"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}