{"id":99,"date":"2014-02-03T05:20:59","date_gmt":"2014-02-02T21:20:59","guid":{"rendered":"http:\/\/www.lixiaodong.com\/?p=99"},"modified":"2016-05-27T16:44:44","modified_gmt":"2016-05-27T08:44:44","slug":"android%e7%9a%84webview%e4%b8%adjava%e5%92%8cjavascript%e5%ae%9e%e7%8e%b0%e4%ba%a4%e4%ba%92%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.lixiaodong.com\/?p=99","title":{"rendered":"android\u7684webview\u4e2djava\u8c03\u7528javascript\u51fd\u6570\u8fd4\u56de\u503c\u7684\u95ee\u9898"},"content":{"rendered":"

\u5728android\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528webview\u5c06\u6211\u4eec\u81ea\u5df1\u6216\u4ed6\u4eba\u7684web\u5e94\u7528\u5d4c\u5165\u5230\u6211\u4eec\u5f00\u53d1\u7684android\u5e94\u7528\u4e2d\u3002
\n\u901a\u5e38\u6211\u4eec\u5728\u5d4c\u5165html\u7f51\u9875\u7684\u540c\u65f6\u5f80\u5f80\u4f1a\u7528\u5230javascript\u3002\u6211\u4eec\u9700\u8981java\u548cjavascript\u8fdb\u884c\u51fd\u6570\u4e92\u76f8\u8c03\u7528\u3002\u5b89\u5353\u5b98\u7f51<\/a>\u4e0a\u5df2\u7ecf\u4ecb\u7ecd\u4e86\u4e8c\u8005\u4e4b\u95f4\u57fa\u672c\u7684\u8c03\u7528\u65b9\u6cd5\u3002\u4e0b\u9762\u8bb2\u4e00\u4e0bjava\u5982\u4f55\u8c03\u7528javascript\u6709\u8fd4\u56de\u503c\u7684\u51fd\u6570\uff0c\u5e76\u5f97\u5230\u8fd4\u56de\u503c\u3002<\/p>\n

1. \u9996\u5148\u7528ADT\u65b0\u5efa\u4e00\u4e2aandroid\u5de5\u7a0b\u3002
\n2. \u4fee\u6539layout\u5e03\u5c40\u6587\u4ef6activity_main.xml\u3002\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n

\r\n<LinearLayout xmlns:android="http:\/\/schemas.android.com\/apk\/res\/android"\r\n    xmlns:tools="http:\/\/schemas.android.com\/tools"\r\n    android:layout_width="fill_parent"\r\n    android:layout_height="fill_parent"\r\n    tools:context=".MainActivity" \r\n    android:orientation="vertical">\r\n\t<WebView\r\n    \tandroid:id="@+id\/webview"\r\n    \tandroid:layout_width="fill_parent"\r\n    \tandroid:layout_height="200dp"\/>\r\n\t<LinearLayout\r\n\t    android:layout_width="fill_parent"\r\n\t    android:layout_height="35dp"\r\n\t    android:orientation="horizontal">\r\n\t \t<EditText \r\n\t \t    android:id="@+id\/edit1"\r\n\t \t    android:layout_width="50dp"\r\n\t \t    android:layout_height="fill_parent"\/>\r\n\t \t<TextView android:text="+"\r\n\t \t    android:layout_width="30dp"\r\n\t \t    android:layout_height="fill_parent"\/>\r\n\t \t<EditText \r\n\t \t    android:id="@+id\/edit2"\r\n\t \t    android:layout_width="50dp"\r\n\t \t    android:layout_height="fill_parent"\/>\r\n\t \t<TextView android:text="="\r\n\t \t    android:layout_width="30dp"\r\n\t \t    android:layout_height="fill_parent"\/>\r\n\t \t<TextView \r\n\t \t    android:id="@+id\/sum"\r\n\t \t    android:layout_width="50dp"\r\n\t \t    android:layout_height="fill_parent"\/>\r\n\t<\/LinearLayout>\r\n\t<LinearLayout\r\n\t    android:layout_width="fill_parent"\r\n\t    android:layout_height="50dp"\r\n\t    android:orientation="horizontal">\r\n\t\t<Button \r\n\t\t    android:layout_width="fill_parent"\r\n\t\t    android:layout_height="fill_parent"\r\n\t\t    android:onClick="clickSumBtn"\r\n\t\t    android:text="sum calculation"\/>\r\n\t<\/LinearLayout>\r\n<\/LinearLayout>\r\n\r\n<\/pre>\n
2. \u4fee\u6539MainActivity\u7c7b\u3002<\/p>\n
\r\n\r\nimport android.os.Bundle;\r\nimport android.app.Activity;\r\nimport android.view.Menu;\r\nimport android.view.View;\r\nimport android.webkit.JsResult;\r\nimport android.webkit.WebChromeClient;\r\nimport android.webkit.WebSettings;\r\nimport android.webkit.WebView;\r\nimport android.widget.EditText;\r\nimport android.widget.TextView;\r\n\r\npublic class MainActivity extends Activity {\r\n\r\n\tprivate WebView myWebView;\r\n\t\r\n\t@Override\r\n\tprotected void onCreate(Bundle savedInstanceState) {\r\n\t\tsuper.onCreate(savedInstanceState);\r\n\t\tsetContentView(R.layout.activity_main);\r\n\t\tmyWebView = (WebView) findViewById(R.id.webview);\r\n\t\t\/\/\u5f00\u542fjs\r\n\t\tWebSettings webSettings = myWebView.getSettings();\r\n\t\twebSettings.setJavaScriptEnabled(true);\r\n\r\n\t\tmyWebView.setWebChromeClient(new MyWebChromeClient());\r\n\t\tmyWebView.loadUrl("file:\/\/\/android_asset\/hello.htm");\r\n\t\t\r\n\t}\r\n\t\r\n\tpublic void clickSumBtn(View view){\r\n\t\tEditText editText1 = (EditText)findViewById(R.id.edit1);\r\n\t\tEditText editText2 = (EditText)findViewById(R.id.edit2);\r\n\t\tString str1 = editText1.getText().toString();\r\n\t\tString str2 = editText2.getText().toString();\r\n\t\tString str = "javascript:alert(sum(" + str1 + "," + str2+ "))";\r\n\t\tmyWebView.loadUrl(str);\r\n\t}\r\n\t\r\n\t@Override\r\n\tpublic boolean onCreateOptionsMenu(Menu menu) {\r\n\t\t\/\/ Inflate the menu; this adds items to the action bar if it is present.\r\n\t\tgetMenuInflater().inflate(R.menu.main, menu);\r\n\t\treturn true;\r\n\t}\r\n\t\r\n\tfinal class MyWebChromeClient extends WebChromeClient {\r\n\r\n\t\t@Override\r\n\t    public boolean onJsAlert(WebView view, String url, String message, JsResult result) {\r\n\t        TextView sum = (TextView)findViewById(R.id.sum);\r\n\t        sum.setText(message);\r\n\t        result.confirm();\r\n\t        return true;\r\n\t        \r\n\t    }\r\n\t}\r\n\r\n}\r\n<\/pre>\n
3. \u5728assets\u76ee\u5f55\u4e0b\u65b0\u5efa\u6587\u4ef6hello.htm\u3002\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
\r\n<html>\r\n\t<head>\r\n\t\t<script type="text\/javascript">\r\n\t\t\tfunction sum(v1, v2){\r\n\t\t\t\treturn v1+v2;\r\n\t\t\t}\r\n\t\t<\/script>\r\n\t<\/head>\r\n\t<body>\r\n\t\thello, world!\r\n\t<\/body>\r\n<\/html>\r\n\r\n<\/pre>\n
4. \u8fd0\u884c
\n\u8f93\u51652\u4e2a\u6570\u540e\u70b9\u51fb\u4e0b\u9762\u7684\u6309\u94ae\uff0c\u7ed3\u679c\u5982\u4e0b\u56fe\u3002
\n\"QQ\u56fe\u724720140202234351\"<\/a><\/p>\n
\u8bf4\u660e\uff1a<\/p>\n
   \u6211\u4eec\u5728\u5b89\u5353\u5e03\u5c40layout\u6587\u4ef6\u91cc\u5b9a\u4e49\u4e86\u4e00\u4e2a\u52a0\u6cd5\u8fd0\u7b97\u7684\u754c\u9762\u3002\u6211\u4eec\u8f93\u51652\u4e2a\u6570\u540e\uff0cjava\u8c03\u7528javascript\u6c42\u548c\u51fd\u6570\u8ba1\u7b97\u4e24\u6570\u4e4b\u548c\uff0c\u6700\u540e\u9700\u8981\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9java\u3002
\n   \u8fd9\u91cc\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5185\u90e8\u7c7bMyWebChromeClient\uff0c\u5b83\u7ee7\u627f\u4e86WebChromeClient\u3002\u6211\u4eec\u8986\u76d6\u4e86onJsAlert\u65b9\u6cd5\u3002\u6211\u4eec\u901a\u8fc7\u8c03\u7528myWebView.loadUrl(“javascript:alert(js\u51fd\u6570(\u53c2\u6570))”);\u7684\u65b9\u5f0f\uff0c\u5728onJsAlert\u65b9\u6cd5\u91cc\u6355\u83b7\u5230\u4e86js\u51fd\u6570\u7684\u8fd4\u56de\u503c\u3002
\n\u8fd9\u79cd\u65b9\u6cd5\u7684\u7f3a\u70b9\u662f\u4f1a\u5f71\u54cd\u5230\u6b63\u5e38\u60c5\u51b5\u4e0b\u4f7f\u7528alert\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728android\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528webview\u5c06\u6211\u4eec\u81ea\u5df1\u6216\u4ed6\u4eba\u7684web\u5e94\u7528\u5d4c\u5165\u5230 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[25,42,34,33,35],"class_list":["post-99","post","type-post","status-publish","format-standard","hentry","category-android","tag-android-2","tag-java","tag-javascript","tag-webview","tag-35"],"_links":{"self":[{"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=\/wp\/v2\/posts\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=99"}],"version-history":[{"count":14,"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=\/wp\/v2\/posts\/99\/revisions"}],"predecessor-version":[{"id":210,"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=\/wp\/v2\/posts\/99\/revisions\/210"}],"wp:attachment":[{"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lixiaodong.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}