从android的webview访问JSON响应 [英] Access the JSON response from webview of android
问题描述
在Android上，我有一个 webView 。我正在加载 url 。首先，我得到一个 Facebook 的登录页面，在填写登录详细信息后，它在同一<$上给我一个 JSON响应 c $ c> webView 。
On Android, I have a webView. I'm loading a url on it. Firstly, I get a login page of Facebook and after filling login details it gives me a JSON Response on same webView.
我正在使用此代码加载 URL 但现在我不知道如何在字符串中获得 JSON响应我完成的内容 url 。
I'm using this code to load that URL but now I don't know how to get that JSON Response in a string what I got on finished of that url.
WebViewClient yourWebClient = new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
@Override
public void onPageFinished(WebView view, String url) {
wb.loadUrl("javascript:window.HTMLOUT.processHTML('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');");
}
};
wb = (WebView) findViewById(R.id.webview);
wb.getSettings().setJavaScriptEnabled(true);
wb.getSettings().setSupportZoom(true);
wb.getSettings().setBuiltInZoomControls(true);
wb.setWebViewClient(yourWebClient);
wb.loadUrl("http://pqrs.abcde.com/facebook");
JSON响应的格式为：
{"status":"success","msg":"You have successfully logged in."}
推荐答案
构建一个名为MyJavaScriptInterface的类。和WebView的MyJavaScriptInterface。
Build a class called MyJavaScriptInterface. And MyJavaScriptInterface to WebView.
WebViewClient yourWebClient = new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
@Override
public void onPageFinished(WebView view, String url) {
wb.loadUrl("javascript:HtmlViewer.showHTML" +
"('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
}
};
wb = (WebView) findViewById(R.id.webview);
wb.getSettings().setJavaScriptEnabled(true);
wb.getSettings().setSupportZoom(true);
wb.getSettings().setBuiltInZoomControls(true);
wb.setWebViewClient(yourWebClient);
wb.loadUrl("http://pqrs.abcde.com/facebook");
wb.addJavascriptInterface(new MyJavaScriptInterface(this), "HtmlViewer");
class MyJavaScriptInterface {
private Context ctx;
MyJavaScriptInterface(Context ctx) {
this.ctx = ctx;
}
@JavascriptInterface
public void showHTML(String html) {
System.out.println(html);
}
}
注意：从你需要删除wb.loadUrl中的窗口（javascript：...）;.
和public void showHTML之前的@JavascriptInterface。
Note: From you are required to remove window in wb.loadUrl("javascript:...");. And @JavascriptInterface before "public void showHTML".
您可以在html参数中从showHtml（..）获取内容。
You can get content from showHtml(..) in html parameter.
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