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Androidのwebview内でJSのconfirmを出す

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  • confirm("トップページに戻りますか?")と記述してもwebview内でconfirm画面が出なかった(常にfalse)
  • WebChromeClientでonJsConfirmメソッドをオーバーライドする必要があるようだ。

  • onCreate内で

    • myWebView.setWebChromeClient(new MyWebChromeClient());
 final Context myApp = this;

    final class MyWebChromeClient extends WebChromeClient {
        @Override
        public boolean onJsConfirm(WebView view, String url, String message, final JsResult result) {
          new AlertDialog.Builder(myApp)
                    .setTitle("App Titler")
                    .setMessage(message)
                    .setPositiveButton(android.R.string.ok,
                            new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    result.confirm();
                                }
                            })
                    .setNegativeButton(android.R.string.cancel,
                            new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    result.cancel();
                                }
                            })
                    .create()
                    .show();

            return true;
        }
    }
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