{"id":750,"date":"2009-09-25T13:55:07","date_gmt":"2009-09-25T05:55:07","guid":{"rendered":"http:\/\/www.impjq.net\/blog\/2009\/09\/25\/android-browser-zoom-inout-%e5%88%86%e6%9e%90\/"},"modified":"2018-12-07T23:21:05","modified_gmt":"2018-12-07T15:21:05","slug":"android-browser-zoom-inout-%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/pjq.me\/?p=750","title":{"rendered":"Android Browser zoom In\/Out \u5206\u6790"},"content":{"rendered":"

\u5f53\u6211\u4eec\u5728\u7528browser\u6d4f\u89c8\u7f51\u9875\u7684\u65f6\u5019\uff0c\u4e0a\u4e0b\u62d6\u52a8\u9875\u9762\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e00\u4e2a\u653e\u5927\u7f29\u5c0f\u7684\u6309\u952e\u4e86\u3002
\n\u73b0\u5728\u8981\u5728browser\u4e0a\u505amulti-touch\uff0c\u53ef\u4ee5\u7528\u4e24\u4e2a\u624b\u6307\u5bf9\u9875\u9762\u8fdb\u884c\u653e\u5927\u7f29\u5c0f\u64cd\u4f5c\uff0c\u73b0\u5728\u65e2\u7136\u5df2\u7ecf\u5b58\u5728\u4e86\u73b0\u5728\u7684\u653e\u5927\u7f29\u5c0f\u529f\u80fd\uff0c\u6211\u53ea\u8981\u80fd\u591f
\n\u627e\u5230\u5b83\u76f8\u5e94\u7684\u64cd\u4f5c\u5c31\u884c\u4e86\u3002
\n\u4e3b\u8981\u7684\u64cd\u4f5c\u90fd\u662f\u5728framework\u4e0b\u9762:WebView.java.
\n\u5728\u7c7bWebView\u7684\u8bf4\u660e\u91cc\u5c31\u6709\u4e00\u6bb5\uff1a
\nTo enable the built-in zoom, set
\n * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)}
\n\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u9009\u62e9\u5f00\u542f\u8fd8\u662f\u5173\u95edzoom\u529f\u80fd\u3002<\/p>\n

\u5728\u67e5\u627e\u7684\u8fc7\u7a0b\u4e2d\u627e\u5230\u4e86\uff1a
\n<\/p>\n

\n    \/**\n     * Perform zoom in in the webview\n     * @return TRUE if zoom in succeeds. FALSE if no zoom changes.\n     *\/\n    public boolean zoomIn() {\n        \/\/ TODO: alternatively we can disallow this during draw history mode\n        switchOutDrawHistory();\n        return zoomWithPreview(mActualScale * 1.25f);\n    }\n\n    \/**\n     * Perform zoom out in the webview\n     * @return TRUE if zoom out succeeds. FALSE if no zoom changes.\n     *\/\n    public boolean zoomOut() {\n        \/\/ TODO: alternatively we can disallow this during draw history mode\n        switchOutDrawHistory();\n        return zoomWithPreview(mActualScale * 0.8f);\n    }\n<\/pre>\n
\u540e\u6765\u5bf9browser\u8fdb\u884c\u8c03\u8bd5\uff0c\u5728\u8fd9\u91cc\u8bbe\u4e86\u65ad\u70b9\uff0c\u8fd9\u91cc\u5c31\u662fzoom in \u548czoom out\u7684\u5904\u7406\u51fd\u6570\u4e86\u3002
\n\u627e\u5230\u4e86\u8fd9\u4e2a\u6211\u5c31\u8981\u5bf9browser\u8fdb\u884c\u4e00\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\u4e86\uff1a
\n\u5728BrowserActivity.java\u91cc\u6709\u4e00\u4e2aonKeyDown\u51fd\u6570\uff0c\u88abOverride,\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u7528\u6765\u63a5\u6536\u6309\u952e\u4e8b\u4ef6\uff0c\u6211\u5c31\u7528\u6309\u4e0b0\u548c1\u80fd\u5bf9\u5e94zoom in\u548czoom out.
\n\u5728\u8fd9\u4e2a\u51fd\u6570\u91cc\u6211\u52a0\u4e0a\u8fd9\u4e48\u4e00\u6bb5\uff1a<\/p>\n
\n        Log.v(LOGTAG, \"onKey,keyCode:\"+keyCode);\n        final WebView webView = getTopWindow();\n        switch (keyCode) {\n            case KeyEvent.KEYCODE_0:\n                Log.v(LOGTAG, \"KEYCODE_0,zoomIn\");\n                webView.zoomIn();\n                return true;\n                \/\/break;\n\n            case KeyEvent.KEYCODE_1:\n                Log.v(LOGTAG, \"KEYCODE_1,zoomOut\");\n                webView.zoomOut();\n                return true;\n                \/\/break;\n\n            default:\n                break;\n        }\n<\/pre>\n
\u8fd9\u6837\u5c31\u53ef\u4ee5\u5bf9\u6309\u952e0\u548c1\u8fdb\u884c\u62e6\u622a\u4e86\uff0c\u7136\u540e\u8fdb\u884czoomIn\u548czoom out\u64cd\u4f5c\u4e86\u3002
\n\u7f16\u8bd1\uff0c\u6253\u5305\uff0c\u6d4b\u8bd5\uff0c\u679c\u7136\u548c\u6211\u60f3\u7684\u4e00\u6837\uff0c\u6309\u4e0b0\uff0c1\u540e\u5206\u522b\u4f1a\u8fdb\u884czoom in \u548czoom out\u64cd\u4f5c\u4e86\u3002
\n\u6d4b\u8bd5\u5230\u8fd9\u91cc\u4ee5\u540emulti-touch\u4e5f\u6309\u8fd9\u79cd\u65b9\u5f0f\u5904\u7406\u5c31\u884c\u4e86\u3002<\/p>\n
\u5728\u663e\u793azoom in\/out\u7684\u540c\u65f6\uff0cbrowser\u4e0a\u8fd8\u4f1a\u663e\u793a\uff0c\u4e00\u4e2a\u201c1X\u201d\u548c\u201cX\u201d\u5927\u6982\u8fd9\u6837\u7684\u4e24\u4e2a\u6309\u94ae\uff0c\u8fd9\u4e24\u4e2a\u6309\u952e\u53c8\u662f\u5728\u54ea\u91cc\u8fdb\u884c\u5904\u7406\u7684\u5462\uff1f
\n\u7ee7\u7eed\u8c03\u8bd5\uff0c\u8fd0\u6c14\u5f88\u597d\uff0c\u6211\u4e4b\u524d\u5728zoomWithPreview();\u6253\u4e86\u65ad\u70b9\uff0c\u6309\u4e0b\u201c1X\u201d\u540e\uff0c\u5c31\u8dd1\u5230\u8fd9\u4e2a\u51fd\u6570\u4e86\uff0c\u4ecedebug stack\u4e2d\u5f88\u5bb9\u6613\u5c31\u627e\u5230\u4e86\u524d\u9762\u8dd1\u8fc7\u7684\u4e00\u4e9b\u51fd\u6570\u4e86\uff1a
\n\u6700\u4e3b\u8981\u7684\u5c31\u662f\u8fd9\u4e2a\u4e86\uff1a<\/p>\n
\n private void initZoomController(Context context) {\n        \/\/ Create the buttons controller\n        mZoomButtonsController = new ZoomButtonsController(this);\n        mZoomButtonsController.setOnZoomListener(mZoomListener);\n\n        \/\/ Create the accessory buttons\n        LayoutInflater inflater =\n                (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);\n        ViewGroup container = mZoomButtonsController.getContainer();\n        inflater.inflate(com.android.internal.R.layout.zoom_browser_accessory_buttons, container);\n        mZoomOverviewButton =\n                (ImageView) container.findViewById(com.android.internal.R.id.zoom_page_overview);\n        mZoomOverviewButton.setOnClickListener(\n            new View.OnClickListener() {\n                public void onClick(View v) {\n                    mZoomButtonsController.setVisible(false);\n                    zoomScrollOut();\n                    if (mLogEvent) {\n                        Checkin.updateStats(mContext.getContentResolver(),\n                                Checkin.Stats.Tag.BROWSER_ZOOM_OVERVIEW, 1, 0.0);\n                    }\n                }\n            });\n        mZoomFitPageButton =\n                (ImageView) container.findViewById(com.android.internal.R.id.zoom_fit_page);\n        mZoomFitPageButton.setOnClickListener(\n            new View.OnClickListener() {\n                public void onClick(View v) {\n                    zoomWithPreview(1f);\n                    updateZoomButtonsEnabled();\n                }\n            });\n    }\n<\/pre>\n
\u8fd9\u91cc\u9762\u5206\u522b\u5bf9”1X”,”X”\u8bbe\u7f6e\u4e86OnClickListener,\u5177\u4f53\u600e\u4e48\u64cd\u4f5c\u6211\u8fd8\u6ca1\u770b\u3002
\n\u627e\u5230\u8fd9\u91cc\uff0c\u5c31\u7b97\u5c06Browser\u7684zoom\u64cd\u4f5c\u5177\u4f53\u8def\u7ebf\u627e\u5168\u4e86\uff0c\u81f3\u4e8e\u66f4\u8be6\u7ec6\u7684\u64cd\u4f5c\u8fd8\u9700\u8981\u8fdb\u4e00\u6b65\u5206\u6790\u3002<\/p>\n
\"\"<\/div>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u6211\u4eec\u5728\u7528browser\u6d4f\u89c8\u7f51\u9875\u7684\u65f6\u5019\uff0c\u4e0a\u4e0b\u62d6\u52a8\u9875\u9762\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e00\u4e2a\u653e\u5927\u7f29\u5c0f\u7684\u6309\u952e\u4e86\u3002 \u73b0\u5728\u8981\u5728browser\u4e0a\u505amulti-touch\uff0c\u53ef\u4ee5\u7528\u4e24\u4e2a\u624b\u6307\u5bf9\u9875\u9762\u8fdb\u884c\u653e\u5927\u7f29\u5c0f\u64cd\u4f5c\uff0c\u73b0\u5728\u65e2\u7136\u5df2\u7ecf\u5b58\u5728\u4e86\u73b0\u5728\u7684\u653e\u5927\u7f29\u5c0f\u529f\u80fd\uff0c\u6211\u53ea\u8981\u80fd\u591f \u627e\u5230\u5b83\u76f8\u5e94\u7684\u64cd\u4f5c\u5c31\u884c\u4e86\u3002 \u4e3b\u8981\u7684\u64cd\u4f5c\u90fd\u662f\u5728framework\u4e0b\u9762:WebView.java. \u5728\u7c7bWebView\u7684\u8bf4\u660e\u91cc\u5c31\u6709\u4e00\u6bb5\uff1a To enable the built-in zoom, set * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} \u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u9009\u62e9\u5f00\u542f\u8fd8\u662f\u5173\u95edzoom\u529f\u80fd\u3002 \u5728\u67e5\u627e\u7684\u8fc7\u7a0b\u4e2d\u627e\u5230\u4e86\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-750","post","type-post","status-publish","format-standard","hentry","category-android"],"yoast_head":"\nAndroid Browser zoom In\/Out \u5206\u6790 - Jianqing's Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pjq.me\/?p=750\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Android Browser zoom In\/Out \u5206\u6790 - Jianqing's Blog\" \/>\n<meta property=\"og:description\" content=\"\u5f53\u6211\u4eec\u5728\u7528browser\u6d4f\u89c8\u7f51\u9875\u7684\u65f6\u5019\uff0c\u4e0a\u4e0b\u62d6\u52a8\u9875\u9762\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e00\u4e2a\u653e\u5927\u7f29\u5c0f\u7684\u6309\u952e\u4e86\u3002 \u73b0\u5728\u8981\u5728browser\u4e0a\u505amulti-touch\uff0c\u53ef\u4ee5\u7528\u4e24\u4e2a\u624b\u6307\u5bf9\u9875\u9762\u8fdb\u884c\u653e\u5927\u7f29\u5c0f\u64cd\u4f5c\uff0c\u73b0\u5728\u65e2\u7136\u5df2\u7ecf\u5b58\u5728\u4e86\u73b0\u5728\u7684\u653e\u5927\u7f29\u5c0f\u529f\u80fd\uff0c\u6211\u53ea\u8981\u80fd\u591f \u627e\u5230\u5b83\u76f8\u5e94\u7684\u64cd\u4f5c\u5c31\u884c\u4e86\u3002 \u4e3b\u8981\u7684\u64cd\u4f5c\u90fd\u662f\u5728framework\u4e0b\u9762:WebView.java. \u5728\u7c7bWebView\u7684\u8bf4\u660e\u91cc\u5c31\u6709\u4e00\u6bb5\uff1a To enable the built-in zoom, set * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} \u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u9009\u62e9\u5f00\u542f\u8fd8\u662f\u5173\u95edzoom\u529f\u80fd\u3002 \u5728\u67e5\u627e\u7684\u8fc7\u7a0b\u4e2d\u627e\u5230\u4e86\uff1a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pjq.me\/?p=750\" \/>\n<meta property=\"og:site_name\" content=\"Jianqing's Blog\" \/>\n<meta property=\"article:published_time\" content=\"2009-09-25T05:55:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-12-07T15:21:05+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/img.zemanta.com\/pixy.gif?x-id=30b7359f-d8d9-8404-8dbe-5d1924d8709e\" \/>\n<meta name=\"author\" content=\"pengjianqing\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"pengjianqing\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/pjq.me\/?p=750#article\",\"isPartOf\":{\"@id\":\"https:\/\/pjq.me\/?p=750\"},\"author\":{\"name\":\"pengjianqing\",\"@id\":\"https:\/\/pjq.me\/#\/schema\/person\/0eb1e72d1e69fbbd9b5c0bfd8e2aae60\"},\"headline\":\"Android Browser zoom In\/Out \u5206\u6790\",\"datePublished\":\"2009-09-25T05:55:07+00:00\",\"dateModified\":\"2018-12-07T15:21:05+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/pjq.me\/?p=750\"},\"wordCount\":63,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/pjq.me\/#\/schema\/person\/0eb1e72d1e69fbbd9b5c0bfd8e2aae60\"},\"image\":{\"@id\":\"https:\/\/pjq.me\/?p=750#primaryimage\"},\"thumbnailUrl\":\"http:\/\/img.zemanta.com\/pixy.gif?x-id=30b7359f-d8d9-8404-8dbe-5d1924d8709e\",\"articleSection\":[\"Android\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/pjq.me\/?p=750#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/pjq.me\/?p=750\",\"url\":\"https:\/\/pjq.me\/?p=750\",\"name\":\"Android Browser zoom In\/Out \u5206\u6790 - 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