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我有一个代码在这里,我想从android的webview中检索一个元素,我似乎无法弄清楚什么是错的。这可能是一些愚蠢的错误,但我不明白为什么和错在哪里。谢谢。JavaScript不工作在WebView - Android
private void retrieveContentWebView(String address){
Log.d("Web Download"," Inside ");
Log.d("Web Download ","address : " + address);
WebView webView;
webView = new WebView(context);
webView.loadUrl(address);
webView.getSettings().setJavaScriptEnabled(true);
webView.addJavascriptInterface(this, "myjava");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.getSettings().setDomStorageEnabled(true);
webView.setWebViewClient(new WebViewClient() {
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
Log.d("Web Download"," Inside Page Started");
}
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
Log.d("Web Download"," Inside Page Finished");
view.loadUrl("javascript: {" +
"var titleTexts = document.getElementsByTagName('title')[0]" +
"myjava.onData(titleTexts.text);}");
}
});
}
//This method will be registered as a JavaScript interface
@JavascriptInterface
@SuppressWarnings("unused")
public void onData(final String value){
Log.d("Web Download"," Inside Handler");
final String getValue = value;
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
// Do something after 5s = 5000ms
Log.d("Web Download HTML :",getValue);
}
}, 5000);
}
getElementsByTagName('title')[0]'后面应该有分号吗?否则,将直接进入以'myjava'开头的下一行。 – Bobulous