{"id":14020,"date":"2023-11-27T11:07:03","date_gmt":"2023-11-27T03:07:03","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=14020"},"modified":"2023-11-27T11:07:03","modified_gmt":"2023-11-27T03:07:03","slug":"javascript-%e5%ae%89%e5%8d%93app%e5%bc%80%e5%8f%91%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/14020\/","title":{"rendered":"javascript \u5b89\u5353app\u5f00\u53d1\u6ce8\u610f\u4e8b\u9879\u4ecb\u7ecd"},"content":{"rendered":"<p>JavaScript \u662f\u4e00\u79cd\u5728\u7f51\u9875\u6d4f\u89c8\u5668\u4e2d\u6267\u884c\u7684\u9ad8\u7ea7\u7f16\u7a0b\u8bed\u8a00\uff0c\u4e3b\u8981\u7528\u4e8e\u6539\u5584\u7f51\u9875\u7684\u7528\u6237\u4f53\u9a8c\uff0c\u4f8b\u5982\u8868\u5355\u9a8c\u8bc1\u3001\u52a8\u6001\u6548\u679c\u548c\u4ea4\u4e92\u529f\u80fd\u7b49\u3002\u56e0\u6b64\uff0c\u5728\u79fb\u52a8\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 JavaScript \u8fdb\u884c\u5b89\u5353\u5e94\u7528\u7a0b\u5e8f\u7684\u5f00\u53d1\u3002\u4e0b\u9762\u662f\u8be6\u7ec6\u4ecb\u7ecd\uff1a<\/p>\n<p>\u5728\u5b89\u5353\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528 JavaScript \u4e3b\u8981\u7ecf\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p>1. \u5f15\u5165 WebView<\/p>\n<p>Webview \u662f android \u4e2d\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u63a7\u4ef6\uff0c\u5728\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u6e32\u67d3 HTML\u3001CSS \u548c JavaScript\u3002<\/p>\n<p>&#8220;`java<\/p>\n<p>WebView webView = findViewById(R.id.web_view);<\/p>\n<p>webView.setWebViewClient(new WebViewClient());<\/p>\n<p>WebSettings settings = webView.getSettings();<\/p>\n<p>settings.setJavaScriptEnabled(true); \/\/ \u542f\u7528 Javascript<\/p>\n<p>&#8220;`<\/p>\n<p>2. \u5728 Asset \u4e2d\u63d0\u4f9b HTML\u3001CSS \u548c JavaScript \u4ee3\u7801 ;<\/p>\n<p>\u5c06\u60a8\u7684 HTML\u3001CSS \u548c JavaScript \u6587\u4ef6\u5b58\u50a8\u5728 Android \u5e94\u7528\u7684 asset \u6587\u4ef6\u5939\u4e2d\u3002\u8fd9\u6837\uff0c\u65e0\u8bba\u4f55\u65f6\u9700\u8981<\/p>\n<p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.cdn.yimenapp.com\/ag\/8\/sucai\/31.jpg\" \/><\/figure>\n<\/p>\n<p>\u4f7f\u7528\u8fd9\u4e9b\u6587\u4ef6\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7\u8def\u5f84 asset\/xxx.html \u6765\u8bbf\u95ee\u5b83\u4eec\u3002\u8fd9\u4e9b\u6587\u4ef6\u53ef\u4ee5\u5305\u542b\u7528\u4e8e\u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u7528\u6237\u754c\u9762\u4ee5\u53ca\u4efb\u4f55\u5176\u4ed6\u5fc5\u8981\u7684 JavaScript \u4ee3\u7801\u3002<\/p>\n<p>3. \u4f7f\u7528 WebView \u52a0\u8f7d HTML \u6587\u4ef6<\/p>\n<p>\u4f7f\u7528\u7f51\u9875\u89c6\u56fe\u52a0\u8f7d HTML \u6587\u4ef6\uff0c\u5f88\u597d\u5730\u5c06\u4f60\u7684 UI \u548c\u6b64\u65f6\u5c06\u4f7f\u7528\u7684\u4ee3\u7801\u8054\u7cfb\u8d77\u6765\u3002<\/p>\n<p>&#8220;`java<\/p>\n<p>WebView webView = findViewById(R.id.web_view);<\/p>\n<p>webView.loadUrl(&#8220;file:\/\/\/android_asset\/index.html&#8221;);<\/p>\n<p>&#8220;`<\/p>\n<p>4. \u5728 JavaScript \u4e2d\u8c03\u7528\u5b89\u5353\u4ee3\u7801<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 JavaScriptInterface \u5728 JavaScript \u4ee3\u7801\u4e2d\u8c03\u7528\u5b89\u5353\u4ee3\u7801\u3002\u4f8b\u5982\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>webView.addJavascriptInterface(new WebAppInterface(this), &#8220;Android&#8221;);<\/p>\n<p>&#8220;`<\/p>\n<p>\u8fd9\u91cc\u7684 WebAppInterface \u662f\u4e00\u4e2a Java \u7c7b\u3002\u7136\u540e\uff0c\u4f7f\u7528 @JavascriptInterface \u6ce8\u91ca\u6807\u8bb0\u4f60\u8981\u516c\u5f00\u7ed9 JavaScript \u7684\u4efb\u4f55\u65b9\u6cd5\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>public class WebAppInterface {<\/p>\n<p>    private Context mContext;<\/p>\n<p>    \/** Instantiate the int<a href=\"https:\/\/www.anzhuoe.com\/\">\u5b89\u5353app\u5f00\u53d1\u5de5\u5177<\/a>erface and set the context *\/<\/p>\n<p>    WebAppInterface(Context c) {<\/p>\n<p>        mContext = c;<\/p>\n<p>    }<\/p>\n<p>    \/** Show a toast from the web page *\/<\/p>\n<p>    @JavascriptInterface<\/p>\n<p>    public void showToast(String toast) {<\/p>\n<p>        Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>\u8fd9\u6837\uff0c\u5728\u6211\u7684 JavaScript \u4ee3\u7801\u4e2d\u6211\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6765\u89e6\u53d1 showToast \u65b9\u6cd5\uff1a<\/p>\n<p>&#8220;`javascript<\/p>\n<p>Android.showToast(&#8216;Hello World!&#8217;);<\/p>\n<p>&#8220;`<\/p>\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u4f7f\u7528 JavaScript \u8fdb\u884c\u5b89\u5353\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u53ef<a 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