{"id":164237,"date":"2024-05-08T14:50:23","date_gmt":"2024-05-08T06:50:23","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/164237.html"},"modified":"2024-05-08T14:50:27","modified_gmt":"2024-05-08T06:50:27","slug":"webview-%e4%b8%ad%e6%80%8e%e4%b9%88%e4%bd%bf%e7%94%a8-javascript","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/164237.html","title":{"rendered":"WebView \u4e2d\u600e\u4e48\u4f7f\u7528 JavaScript"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26231113\/4ae362f8-7a1a-4de8-a883-40709b18082e.webp\" alt=\"WebView \u4e2d\u600e\u4e48\u4f7f\u7528 JavaScript\" \/><\/p>\n<p><p><strong>\u901a\u8fc7WebView\u4e2d\u542f\u7528JavaScript\u652f\u6301\u3001\u8c03\u7528JavaScript\u65b9\u6cd5\u548cJavaScript\u4e0e\u539f\u751f\u5e94\u7528\u4ea4\u4e92<\/strong>\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u589e\u5f3a\u79fb\u52a8\u5e94\u7528\u7684\u529f\u80fd\u6027\u548c\u4e92\u52a8\u6027\u3002\u9996\u5148\uff0c\u5fc5\u987b\u786e\u4fddWebView\u7ec4\u4ef6\u5df2\u6b63\u786e\u914d\u7f6e\u4ee5\u542f\u7528JavaScript\u6267\u884c\u3002\u8fd9\u901a\u5e38\u901a\u8fc7WebView\u8bbe\u7f6e\u4e2d\u7684\u7279\u5b9aAPI\u8c03\u7528\u6765\u5b8c\u6210\u3002\u5176\u6b21\uff0c\u4e00\u65e6\u542f\u7528JavaScript\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7WebView\u7684<code>loadUrl<\/code>\u548c<code>evaluateJavascript<\/code>\u65b9\u6cd5\u8c03\u7528JavaScript\u51fd\u6570\u3002\u6700\u540e\uff0cJavaScript\u4e0e\u539f\u751f\u5e94\u7528\u7684\u4ea4\u4e92\u53ef\u901a\u8fc7JavaScriptInterface\u5b9e\u73b0\uff0c\u8fd9\u662f\u4e00\u79cd\u5c06\u539f\u751f\u4ee3\u7801\u66b4\u9732\u7ed9JavaScript\u73af\u5883\u7684\u673a\u5236\u3002<\/p>\n<\/p>\n<p><p>\u5c55\u5f00\u8be6\u7ec6\u63cf\u8ff0\uff0c<strong>\u542f\u7528JavaScript\u652f\u6301<\/strong>\u662f\u5b9e\u73b0WebView\u4e2d\u4f7f\u7528JavaScript\u7684\u7b2c\u4e00\u6b65\u3002\u5728Android\u4e2d\uff0c\u4f60\u9700\u8981\u901a\u8fc7WebView\u7684<code>getSettings<\/code>\u65b9\u6cd5\u8bbf\u95eeWebSettings\uff0c\u7136\u540e\u4f7f\u7528<code>setJavaScriptEnabled(true)<\/code>\u65b9\u6cd5\u6765\u542f\u7528JavaScript\u3002\u4f8b\u5982:<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">WebView myWebView = (WebView) findViewById(R.id.webview);<\/p>\n<p>WebSettings webSettings = myWebView.getSettings();<\/p>\n<p>webSettings.setJavaScriptEnabled(true);<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u542f\u7528JavaScript\u540e\uff0cWeb\u9875\u9762\u4e2d\u7684JavaScript\u4ee3\u7801\u5c31\u53ef\u4ee5\u5728WebView\u4e2d\u8fd0\u884c\u4e86\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u542f\u7528JAVASCRIPT<\/h3>\n<\/p>\n<p><h4>\u914d\u7f6eWebView\u8bbe\u7f6e<\/h4>\n<\/p>\n<p><p>\u8981\u5728WebView\u4e2d\u4f7f\u7528JavaScript\uff0c\u9996\u5148\u9700\u8981\u901a\u8fc7WebView\u7684\u8bbe\u7f6e\u542f\u7528JavaScript\u3002\u901a\u5e38\uff0c\u4f60\u53ef\u4ee5\u8c03\u7528WebView\u7684<code>getSettings()<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6WebSettings\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528<code>setJavaScriptEnabled(true)<\/code>\u6765\u542f\u7528JavaScript\u529f\u80fd\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u6839\u636e\u9700\u6c42\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u914d\u7f6e\u5176\u4ed6\u4e0eJavaScript\u76f8\u5173\u7684\u8bbe\u7f6e\uff0c\u4f8b\u5982DomStorageEnabled\u6216JavaScriptCanOpenWindowsAutomatically\u7b49\u3002<\/p>\n<\/p>\n<p><h4>\u5904\u7406\u5b89\u5168\u95ee\u9898<\/h4>\n<\/p>\n<p><p>\u542f\u7528JavaScript\u540e\uff0c\u9700\u8981\u5173\u6ce8\u5b89\u5168\u95ee\u9898\uff0c\u56e0\u4e3aJavaScript\u53ef\u4ee5\u88ab\u7528\u6765\u6267\u884c\u6076\u610f\u4ee3\u7801\u3002\u56e0\u6b64\uff0c\u5728\u4e00\u4e2a\u5b89\u5168\u7684\u73af\u5883\u4e0b\u8fd0\u884cJavaScript\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u4e3a\u4e86\u7f13\u89e3\u8fd9\u4e9b\u98ce\u9669\uff0c\u5efa\u8bae\u4e0d\u8981\u52a0\u8f7d\u672a\u77e5\u6765\u6e90\u7684\u5185\u5bb9\uff0c\u5e76\u5728WebViewClient\u7684<code>shouldOverrideUrlLoading<\/code>\u548c<code>onLoadResource<\/code>\u7b49\u65b9\u6cd5\u4e2d\u8fdb\u884c\u5185\u5bb9\u68c0\u67e5\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u8c03\u7528JAVASCRIPT\u65b9\u6cd5<\/h3>\n<\/p>\n<p><h4>\u901a\u8fc7loadUrl\u6267\u884cJavaScript\u4ee3\u7801<\/h4>\n<\/p>\n<p><p>\u5728Android\u4e2d\uff0cWebView\u63d0\u4f9b\u4e86\u4e00\u4e2a<code>loadUrl<\/code>\u65b9\u6cd5\uff0c\u5141\u8bb8\u4f60\u6267\u884cJavaScript\u4ee3\u7801\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f20\u9012\u4ee5&quot;javascript:&quot;\u5f00\u5934\u7684URI\u5230\u8fd9\u4e2a\u65b9\u6cd5\u6765\u8fd0\u884cJavaScript\u4ee3\u7801\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u8fd9\u6837\u8c03\u7528\u4e00\u4e2aJavaScript\u51fd\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">myWebView.loadUrl(&quot;javascript:myFunction()&quot;);<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>\u4f7f\u7528evaluateJavascript\u83b7\u53d6\u7ed3\u679c<\/h4>\n<\/p>\n<p><p>\u4eceAndroid 4.4 (API level 19)\u5f00\u59cb\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528<code>evaluateJavascript<\/code>\u6765\u4e0d\u4ec5\u6267\u884cJavaScript\u4ee3\u7801\uff0c\u8fd8\u53ef\u4ee5\u5f02\u6b65\u83b7\u53d6\u6267\u884c\u7ed3\u679c\u3002\u8fd9\u4e2a\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2aJavaScript\u8868\u8fbe\u5f0f\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u4f7f\u7528ValueCallback\u63a5\u53e3\u6765\u5904\u7406\u7ed3\u679c\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001JAVASCRIPT\u4e0e\u539f\u751f\u4ee3\u7801\u4ea4\u4e92<\/h3>\n<\/p>\n<p><h4>\u521b\u5efaJavaScriptInterface<\/h4>\n<\/p>\n<p><p>JavaScript\u4e0e\u539f\u751f\u4ee3\u7801\u7684\u4ea4\u4e92\u901a\u5e38\u662f\u901a\u8fc7\u6ce8\u5165Java\u5bf9\u8c61\u5230WebView\u7684JavaScript\u73af\u5883\u4e2d\u5b9e\u73b0\u7684\uff0c\u79f0\u4e4b\u4e3aJavaScriptInterface\u3002\u4e3a\u4e86\u628a\u4e00\u4e2aJava\u5bf9\u8c61\u6ce8\u518c\u4e3aJavaScriptInterface\uff0c\u4f60\u9700\u8981\u8c03\u7528WebView\u7684<code>addJavascriptInterface<\/code>\u65b9\u6cd5\uff0c\u5e76\u4e3a\u8fd9\u4e2a\u5bf9\u8c61\u6307\u5b9a\u4e00\u4e2a\u540d\u79f0\u3002<\/p>\n<\/p>\n<p><h4>\u5b89\u5168\u6027\u6ce8\u610f\u4e8b\u9879<\/h4>\n<\/p>\n<p><p>\u5728\u521b\u5efaJavaScript\u63a5\u53e3\u65f6\uff0c\u4f60\u9700\u8981\u6ce8\u610f\u6ce8\u5165\u7684\u5bf9\u8c61\u5728JavaScript\u73af\u5883\u4e2d\u7684\u5b89\u5168\u6027\u95ee\u9898\u3002\u786e\u4fdd\u53ea\u66b4\u9732\u51fa\u6709\u9650\u4e14\u9700\u8981\u7684\u65b9\u6cd5\u7ed9JavaScript\u73af\u5883\uff0c\u5e76\u4e14\u907f\u514d\u5728\u4f4e\u7248\u672c\u7684Android\u4e2d\u4f7f\u7528\u8fd9\u4e2a\u529f\u80fd\uff0c\u56e0\u4e3a\u5728Android 4.2\u4ee5\u4e0b\uff0c\u901a\u8fc7JavaScriptInterface\u66b4\u9732\u7684Java\u65b9\u6cd5\u53ef\u4ee5\u88abJavaScript\u73af\u5883\u4e2d\u7684\u4efb\u4f55\u4ee3\u7801\u89e6\u53d1\uff0c\u8fd9\u5e26\u6765\u4e86\u5b89\u5168\u9690\u60a3\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5904\u7406JAVASCRIPT\u5bf9\u8bdd\u6846<\/h3>\n<\/p>\n<p><h4>\u76d1\u542c\u548c\u5904\u7406Alert\u3001Confirm\u548cPrompt<\/h4>\n<\/p>\n<p><p>WebView\u4e2d\uff0cJavaScript\u4ee3\u7801\u53ef\u4ee5\u521b\u5efaalert\u3001confirm\u548cprompt\u5bf9\u8bdd\u6846\u3002\u8981\u5904\u7406\u8fd9\u4e9b\u5bf9\u8bdd\u6846\uff0c\u4f60\u9700\u8981\u8bbe\u7f6eWebView\u7684WebChromeClient\uff0c\u5e76\u91cd\u5199<code>onJsAlert<\/code>\u3001<code>onJsConfirm<\/code>\u548c<code>onJsPrompt<\/code>\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h4>\u81ea\u5b9a\u4e49\u5bf9\u8bdd\u6846\u754c\u9762<\/h4>\n<\/p>\n<p><p>\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u4f60\u53ef\u4ee5\u63d0\u4f9b\u81ea\u5df1\u7684\u5bf9\u8bdd\u6846\u7528\u6237\u754c\u9762\u6216\u8005\u4f7f\u7528\u9ed8\u8ba4\u7684\u5904\u7406\u65b9\u5f0f\u3002\u8fd9\u4e3a\u539f\u751f\u5e94\u7528\u4e0eWebView\u95f4\u7684\u4ea4\u4e92\u63d0\u4f9b\u4e86\u4e00\u5c42\u66f4\u52a0\u81ea\u7136\u7684\u754c\u9762\uff0c\u4ece\u800c\u53ef\u4ee5\u521b\u5efa\u66f4\u52a0\u6574\u5408\u7684\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u4f18\u5316JAVASCRIPT\u6027\u80fd<\/h3>\n<\/p>\n<p><h4>\u9884\u52a0\u8f7d\u548c\u7f13\u5b58\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u5bf9\u4e8e\u4f7f\u7528JavaScript\u7684WebView\u5e94\u7528\uff0c\u6027\u80fd\u4f18\u5316\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u5f0f\u6765\u63d0\u9ad8\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u548cJavaScript\u6267\u884c\u65f6\u95f4\uff0c\u4f8b\u5982\u4f7f\u7528\u9884\u52a0\u8f7d\u6280\u672f\u6216\u5728WebView\u8bbe\u7f6e\u4e2d\u542f\u7528\u7f13\u5b58\u3002<\/p>\n<\/p>\n<p><h4>\u76d1\u63a7JavaScript\u6027\u80fd<\/h4>\n<\/p>\n<p><p>\u53e6\u5916\uff0c\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5f00\u53d1\u8005\u5de5\u5177\u5982Chrome DevTools\u6765\u76d1\u63a7JavaScript\u5728WebView\u4e2d\u7684\u6267\u884c\u6027\u80fd\uff0c\u5e76\u6839\u636e\u6027\u80fd\u5206\u6790\u7ed3\u679c\u505a\u51fa\u9002\u5f53\u7684\u4f18\u5316\u3002<\/p>\n<\/p>\n<p><p>\u7efc\u4e0a\uff0c\u901a\u8fc7WebView\u4e2d\u7684JavaScript\u652f\u6301\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u4e30\u5bcc\u7684Web\u4e0e\u539f\u751f\u5e94\u7528\u4e4b\u95f4\u7684\u4ea4\u4e92\u3002\u4ece\u542f\u7528JavaScript\u548c\u6267\u884c\u4ee3\u7801\uff0c\u5230\u4e0e\u539f\u751f\u4ee3\u7801\u7684\u63a5\u53e3\u4ea4\u4e92\uff0c\u518d\u5230JavaScript\u5bf9\u8bdd\u6846\u7684\u5904\u7406\u4ee5\u53ca\u6027\u80fd\u4f18\u5316\uff0c\u6bcf\u4e00\u6b65\u90fd\u5bf9\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u81f3\u5173\u91cd\u8981\u3002\u5728\u5b9e\u65bd\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5b89\u5168\u6027\u548c\u6027\u80fd\u59cb\u7ec8\u662f\u6838\u5fc3\u8003\u91cf\uff0c\u786e\u4fdd\u5e94\u7528\u65e2\u9ad8\u6548\u53c8\u5b89\u5168\u5bf9\u7528\u6237\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. 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