android WebView中js的alert()失效

WebView的設置代碼

wv = (WebView) findViewById(R.id.webView1); wv.getSettings().setJavaScriptEnabled(true);//支持js wv.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);//允許js彈出窗口 wv.loadUrl("http://www.google.com"); wv.setWebViewClient(new WebViewClient()); 

還需要做如下設置，通過這樣的轉換為android內部的控件的

webView.setWebChromeClient(new WebChromeClient() { @Override public boolean onJsAlert(WebView view, String url, String message, final JsResult result) { AlertDialog.Builder b2 = new AlertDialog.Builder(this) .setTitle(R.string.title).setMessage(message) .setPositiveButton("ok", new AlertDialog.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { result.confirm(); // MyWebView.this.finish();  } });
 b2.setCancelable(false); b2.create(); b2.show(); return true; } }