{"id":505,"date":"2009-07-27T15:11:20","date_gmt":"2009-07-27T07:11:20","guid":{"rendered":"http:\/\/www.impjq.net\/blog\/?p=505"},"modified":"2009-07-27T15:11:20","modified_gmt":"2009-07-27T07:11:20","slug":"flickr-2","status":"publish","type":"post","link":"https:\/\/pjq.me\/?p=505","title":{"rendered":"Android Browser Introduction:CallbackProxy.java\u5206\u6790"},"content":{"rendered":"

\u6587\u4ef6\u5728:frameworks\\base\\core\\java\\android\\webkit
\nCallbackProxy:
\n\u8fd9\u662f\u4e00\u4e2a\u7ee7\u627f\u81eaHandle\u7684\u7c7b,\u7528\u6765\u5b9e\u73b0UI\u548cWebViewCore\u4e4b\u95f4\u4ea4\u6362\u7684\u6865\u6881.
\n\u5b83\u91cc\u9762\u5b9a\u4e49\u4e86\u5f88\u591a\u51fd\u6570,\u8fd9\u4e9b\u51fd\u6570\u91cc\u9762\u57fa\u672c\u4e0a\u90fd\u53ea\u662f\u5b8c\u6210\u4e86\u4e00\u4e2asendmessage\u7684\u4f5c\u7528.\u5b83\u5c06message\u53d1\u9001\u7ed9\u81ea\u8eab\u7684HandleMessage().\u7136\u540e\u6309\u7167\u7c7b\u578b\u518d\u8fdb\u53bb\u5206\u53d1.
\n\u5b83\u5b9a\u4e49\u4e86\u4e00\u4e9b\u4e8b\u4ef6ID:<\/p>\n

\n    \/\/ Message Ids\n    private static final int PAGE_STARTED         = 100;\n    private static final int RECEIVED_ICON        = 101;\n    private static final int RECEIVED_TITLE       = 102;\n    private static final int OVERRIDE_URL         = 103;\n    private static final int AUTH_REQUEST         = 104;\n    private static final int SSL_ERROR            = 105;\n    private static final int PROGRESS             = 106;\n    private static final int UPDATE_VISITED       = 107;\n    private static final int LOAD_RESOURCE        = 108;\n    private static final int CREATE_WINDOW        = 109;\n    private static final int CLOSE_WINDOW         = 110;\n    private static final int SAVE_PASSWORD        = 111;\n    private static final int JS_ALERT             = 112;\n    private static final int JS_CONFIRM           = 113;\n    private static final int JS_PROMPT            = 114;\n    private static final int JS_UNLOAD            = 115;\n    private static final int ASYNC_KEYEVENTS      = 116;\n    private static final int TOO_MANY_REDIRECTS   = 117;\n    private static final int DOWNLOAD_FILE        = 118;\n    private static final int REPORT_ERROR         = 119;\n    private static final int RESEND_POST_DATA     = 120;\n    private static final int PAGE_FINISHED        = 121;\n    private static final int REQUEST_FOCUS        = 122;\n    private static final int SCALE_CHANGED        = 123;\n    private static final int RECEIVED_CERTIFICATE = 124;\n    private static final int SWITCH_OUT_HISTORY   = 125;\n<\/pre>\n
\u8fd9\u91cc\u7684\u6bcf\u4e2aID\u90fd\u5728HandleMessage()\u91cc\u505a\u4e86\u76f8\u5e94\u7684\u5904\u7406.<\/p>\n
\u5148\u770b\u770b\u7b2c\u4e00\u4e2a\u5427:PAGE_STARTED
\n\u8fd9\u4e2a\u5e94\u8be5\u662f\u5f00\u59cbload page\u4e86,\u800c\u4e14\u8dd1\u5230\u8fd9\u4e2a\u5730\u65b9\u7684page\u4e00\u5b9a\u8981\u662f:iframes or framesets(\u8fd9\u4e24\u4e2a\u662f\u4ec0\u4e48?),\u5176\u5b83\u5f62\u5f0f\u7684\u9875\u9762\u4e0d\u4f1a\u8dd1\u8fd9\u4e2a.
\n\u5f88\u5947\u602aonPageStarted\u7684\u51fd\u6570\u5185\u5bb9\u4e3a\u7a7a.WebViewClient\u91cc\u7684\u51fd\u6570\u4e5f\u90fd\u662f\u7a7a\u4e86,\u67e5\u4e86\u4e00\u4e0b,\u539f\u6765\u5728BrowserActivity\u91cc\u9762Override\u4e86:<\/p>\n
\n    private final WebViewClient mWebViewClient = new WebViewClient()\n    private final WebChromeClient mWebChromeClient = new WebChromeClient()\n<\/pre>\n
\u77e5\u9053\u4e86\u8fd9\u4e2a,\u6211\u4eec\u5c31\u53ef\u4ee5\u60f3\u8c61\u4eceWebCore\u4f20\u4e0a\u6765\u67d0\u4e2a\u4e8b\u4ef6,\u901a\u8fc7\u67d0\u4e9b\u9014\u5f84\u8c03\u7528\u4e86CallbackProxy\u91cc\u5904\u7406\u51fd\u6570.
\n\u7136\u540e\u518d\u901a\u8fc7HandleMessage()\u6765\u5206\u53d1\u51fa\u53bb.\u5206\u53d1\u7684\u65f6\u5019,\u4e3b\u8981\u6709\u4e24\u4e2aclient:WebViewClien,WebChromeClient,\u8fd9\u4e24\u4e2aclient\u5206\u522b\u5b9a\u4e49\u4e86\u4e00\u4e9b\u5904\u7406\u51fd\u6570,\u5e76\u5728BrowserActivity\u91cc\u5b9e\u73b0\u4e86\u51fd\u6570\u4f53.
\n\u5206\u6790\u5230\u8fd9\u91cc\u6211\u4eec\u5c31\u80fd\u7406\u89e3\u4e86\u4e3a\u4ec0\u4e48\u8bf4CallbackProxy\u91cc\u6c9f\u901aWebCore\u548cUI Thread\u7684\u6865\u6881\u4e86.<\/p>\n
\u8bd5\u4e86\u4e00\u4e2a\u79bb\u7ebf\u53d1\u5e03Blog\u7684Firefox\u63d2\u4ef6\uff1aScribeFire<\/a>,\u539f\u6765\u53d1\u5e03\u535a\u5ba2\u662f\u8fd9\u4e48\u7b80\u5355\u7684\u4e8b\u60c5\uff0c\u4ee5\u524d\u90fd\u662f\u767b\u5f55\u5230\u540e\u53f0\u8fdb\u884c\u64cd\u4f5c\u7684\uff0c\u770b\u6765\u843d\u540e\u592a\u591a\u4e86\u3002<\/p>\n
————————————-\u534e\u4e3d\u7684\u5206\u5272\u7ebf——————————————-
\n\u539f\u6765mpd\u53ef\u4ee5\u64ad\u653eape,avi\u683c\u5f0f\u4e86\uff0c\u4e0d\u77e5\u9053\u8fd8\u6709\u5176\u5b83\u683c\u5f0f\u5417\uff1f
\n\u521b\u5efa\u6570\u636e\u5e93\uff1ampd –create-db
\n\u5c06\u6240\u6709\u6b4c\u66f2\u52a0\u5230\u64ad\u653e\u5217\u8868\u4e2d\u53bb\uff1ampc listall|mpc add
\n\u7136\u540e\u968f\u4fbf\u64ad\u653e\u4e86\uff0c\u8d34\u4e00\u4e2a\u6211\u5199\u7684\u64ad\u653e\u7684\u811a\u672c\uff1a<\/p>\n
\npjq@gentoo-pjq ~ $ cat \/usr\/local\/bin\/pp\n#########################################################################\n# Author: pengjianqing@gmail.com\n# Created Time: Wed 04 Feb 2009 06:41:20 PM CST\n# File Name: pp.sh\n# Description:\n#########################################################################\n#!\/bin\/bash\necho  -n Input the Music name:\nread  music\nlist=`mpc listall|cat -n|grep -i $music`\necho \"$list\"\n#mpc listall|cat -n|grep -i $music|cut -b-7|while read music\n#do\n#echo mpc play $music\n#mpc play $music&\n#done\n\necho -n Input the Music Number:\nread  music\nname=`echo \"$list\"|grep $music`\necho \"Now playing music:\"\nmpc play $music\n<\/pre>\n
\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n
\npjq@gentoo-pjq ~ $ pp\n<b>Input the Music name:\u6b27\u7f8e<\/b>\n  1521    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/01\u7231\u7684\u529b\u91cf(\u5e2d\u7433\u8fea\u7fc1).ape\n  1522    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/03\u56e0\u4e3a\u6211\u7231\u4f60(\u6c99\u91d1\u65af\u5e1d\u6587).ape\n  1523    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/04\u5e26\u8d70\u6211\u7684\u547c\u5438(\u67cf\u6797\u4e50\u961f).ape\n  1524    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/05\u5361\u8428\u5e03\u5170\u5361(\u8d1d\u7279\u5e0c\u91d1\u65af).ape\n  1525    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/07\u6b64\u60c5\u53ef\u5f85(\u7406\u67e5\u9a6c\u514b\u65af).ape\n  1526    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/08\u5954\u653e\u7684\u65cb\u5f8b(\u6b63\u76f4\u5144\u5f1f).ape\n  1527    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/09\u7231\u4f60\u5728\u5fc3\u53e3\u96be\u5f00(\u52b3\u8d5b\u5c14).ape\n  1528    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/10\u4ee5\u543b\u5c01\u7f04(\u6ce2\u6bd4\u7ef4\u987f).ape\n  1529    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/11\u5bc2\u9759\u4e4b\u58f0(\u897f\u8499\u52a0\u82ac\u514b\u5c14).ape\n  1530    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/12\u4e00\u5207\u90fd\u4e3a\u4f60(\u5e03\u6765\u6069\u4e9a\u5f53\u65af).ape\n  1531    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/13\u6628\u65e5\u91cd\u73b0(\u5361\u672c\u7279).ape\n  1532    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/14\u67e0\u6aac\u6811(\u611a\u4eba\u82b1\u56ed).ape\n  1533    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/15\u9e3d\u5b50(\u80e1\u5229\u5965\u4f0a\u683c\u83b1\u897f\u4e9a\u65af).ape\n  1534    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/16\u65af\u5361\u5e03\u7f57\u96c6\u5e02(\u838e\u62c9.\u5e03\u83b1\u66fc).ape\n  1535    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/17\u52a0\u5dde\u65c5\u9986(\u8001\u9e70\u4e50\u961f).ape\n  1536    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/18\u53bb\u5e74\u5723\u8bde(\u5a01\u731b\u4e50\u961f).ape\n  1537    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/19\u5df4\u6bd4\u4f26\u6cb3(\u6ce2\u5c3c\u59c6).ape\n  1538    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/20\u6211\u53d1\u8a93(\u56db\u5408\u4e3a\u4e00).ape\n  1539    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/21\u4f60\u7684\u7231\u6709\u591a\u6df1(\u6bd4\u5409\u65af).ape\n  1540    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/22\u4f60\u7684\u6bcf\u6b21\u547c\u5438(\u65af\u6c40).ape\n  1541    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/23\u751c\u871c\u7684\u4e00\u5929(\u739b\u4e3d\u4e9a.\u51ef\u4e3d&\u7537\u4eba\u7537\u5b69).ape\n  1542    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/24\u822a\u884c.ape\n  1543    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/25\u97a0\u4e00\u4e2a\u8eac(\u9ea6\u4e39\u5a1c).ape\n  1544    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/26\u8bf4\u6211\u7231\u4f60...\u5374\u8bf4\u8c0e\u8a00(\u8fc8\u514b\u5c14.\u9c8d\u987f).ape\n  1545    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/27\u65e0\u8bba\u5982\u4f55(\u7537\u5b69\u5730\u5e26).ape\n  1546    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/28\u5929\u4f7f(\u838e\u62c9.\u514b\u52b3\u514b\u5170).ape\n  1547    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/29\u82f1\u96c4(\u739b\u4e3d\u4e9a.\u51ef\u4e3d).ape\n  1548    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/30\u73ab\u7470\u4e4b\u543b(\u5e2d\u5c14).ape\n  1549    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/31\u5929\u957f\u5730\u4e45(\u4e39\u4f5b\u683c\u4f2f).ape\n  1550    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/32\u6211\u76f8\u4fe1\u6211\u80fd\u98de(\u963f.\u51ef\u5229).ape\n  1551    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/33\u522b\u8ba9\u6211\u62c5\u5fc3(\u6258\u5c3c.\u5e03\u83b1\u514b\u65af\u987f).ape\n  1552    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/34\u8ff7\u5931\u7684\u7231(\u7a7a\u6c14\u8865\u7ed9\u8005).ape\n  1553    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/35\u8bfa\u8a00\u6765\u4e4b\u4e0d\u6613(\u5361\u8bfa.\u5357\u6c40\u683c\u5c14).ape\n  1554    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/36\u65e0\u987b\u77e5\u9053\u592a\u591a(\u963f\u9686\u5185\u7ef4\u5c14\u4e0e\u7433\u8fbe\u7f57\u65af\u5766).ape\n  1555    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/37\u6539\u53d8\u4e16\u754c(\u827e\u529b\u514b.\u514b\u83b1\u666e\u987f).ape\n  1556    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/38\u6bcf\u5f53\u6211\u95ed\u4e0a\u53cc\u773c(\u5a03\u5a03\u8138).ape\n  1557    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/39\u5f53\u6211\u6700\u9700\u8981\u4f60\u7684\u65f6\u5019(\u5357\u8fea\u8303\u534e\u6885).ape\n  1558    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/40\u98ce\u4e4b\u5f69(\u51e1\u59ae\u838e.\u5a01\u5ec9\u59c6\u65af).ape\n  1559    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/41\u4f60\u4ecd\u662f\u552f\u4e00(\u4ed9\u59ae\u4e9a.\u5510\u6069).ape\n  1560    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/42\u597d\u7537\u4eba(\u7f57\u6bd4.\u5a01\u5ec9\u59c6\u65af).ape\n  1561    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/43\u6ca1\u6709\u4f60(\u739b\u4e3d\u4e9a\u51ef\u4e3d).ape\n  1562    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/44\u7231\u60c5\u5723\u624b(\u8428\u9edb).ape\n  1563    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/45\u6cea\u6d12\u5929\u5802(\u827e\u529b\u514b\u514b\u83b1\u666e\u987f).ape\n  1564    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/46\u60c5\u6df1\u4f3c\u6d77(\u79d1\u91cc\u592b\u7406\u67e5\u5fb7).ape\n  1565    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/47\u6709\u4f60\u76f8\u4f34(\u8d39\u4e1d.\u5e0c\u5c14).ape\n  1566    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/48\u4f60\u7684\u81f3\u7231(\u683c\u96f7\u4f5b\u52d2).ape\n  1567    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/49\u6211\u5c06\u6c38\u8fdc\u7231\u4f60(\u60e0\u7279\u5c3c\u4f11\u65af\u987f).ape\n  1568    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/50\u4e5f\u4f1a\u4f24\u5bb3\u6211\u7684\u5fc3(\u963f\u9686.\u5185\u7ef4\u5c14).ape\n  1569    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/51\u771f\u8bda\u7684.\u75af\u72c2\u7684.\u6df1\u523b\u7684(\u91ce\u4eba\u82b1\u56ed).ape\n  1570    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/52\u8ba9\u6211\u62e5\u62b1\u4f60.\u5b9d\u8d1d(\u7fe0\u897f.\u67e5\u666e\u8513).ape\n  1571    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/53\u65e0\u5fc3\u5462\u5583(\u5a01\u731b\u4e50\u961f).ape\n  1572    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/54\u8c22\u8c22(\u8482\u6735).ape\n  1573    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/55\u51b2\u7834\u7981\u5fcc(\u83f2\u5c14.\u67ef\u6797\u65af).ape\n  1574    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/56\u4eb2\u4eb2\u543e\u7231(\u897f\u57df\u7537\u5b69).ape\n  1575    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/57\u5929\u5802\u91cc\u7684\u53e6\u4e00\u5929(\u83f2\u5c14\u79d1\u6797\u65af).ape\n  1576    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/58\u65e0\u5c3d\u7684\u7231(\u83b1\u6602\u91cc\u5947\u6234\u5b89\u5a1c\u7f57\u65af).ape\n  1577    occident golden records\u6b27\u7f8e\u91d1\u5531\u76d8\/59\u5f53\u7537\u5973\u76f8\u7231\u65f6(\u8fc8\u514b\u9c8d\u987f).ape\n  1578    occident golden 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