Android与JS之间跨平台异步调用 为什么突然要搞这个问题呢?
在开发浏览器的时候遇到这个狗血的问题,花了将近1天的时间才想到这个解决方案,Android与JavaScirpt互调。
因为接口是抓取的别人的,所以出现了JS跨域问题,Android闪亮登场搞定了。
GIF动画演示
WebView相关设置WebSettings mWebSettings = getSettings();mWebSettings.setDefaultTextEncodingName("UTF-8");//设置默认的显示编码mWebSettings.setJavaScriptEnabled(true);//调用JS方法.安卓版本大于17,加上注解 @JavascriptInterface
直接放大招->贴代码
AndroidaddJavascriptInterface(new Object() {@JavascriptInterfacepublic void toastMessage(final String url, final int type, final int dir) {L.e("url = " + url + " type = " + type + " dir = " + dir);APIWrapper.getInstance().getLenovoWord(url).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).subscribe(new RxSubscriber<ResponseBody>() {@Overridepublic void _onNext(ResponseBody responseBody) {try {String data = responseBody.string();L.e("data = " + data);loadUrl("javascript:ResCompleted(" + data + "," + type + "," + dir + ")");} catch (IOException e) {e.printStackTrace();}}@Overridepublic void _onError(String msg) {loadUrl("javascript:ResCompleted(" + msg + ")");}});}}, "Android");
Html
<html><meta name="viewport" content="width=device-width,height=device-height,inital-scale=1.0,maximum-scale=1.0,user-scalable=no;"><head><title>Js调用Android代码</title><style>#button-call{width: 100%;padding: 20px;font-size: 20px;}#div_bg{background: #cccccc;margin-top: 50px;}</style><script type="text/javascript">window.onload=function() {document.getElementById("button_call").onclick=function(){window.Android.toastMessage("http://api.sina.cn/sinago/list.json?channel=news_toutiao",1, 0);}}function ResCompleted(result,type,dir) {document.getElementById("div_bg").innerHTML="Android调用JS代码-成功!!!"+JSON.stringify(result);}</script></head><body><button id="button_call">Js调用Android代码</button><div id="div_bg"></div></body></html>
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