Question

大家好我正在为我的网站创建一个网络视图应用问题是互联网不可用时webview显示网页不可用

但我想要的是显示消息＆amp;一个重新加载按钮，说“您需要连接到互联网才能使用此应用程序按下重新启动互联网后”。提前致谢。

Answer 1

只需在打开webView时检查网络连接。

我在这里为您提供相同的方法。

public boolean isConnectingToInternet() {
    ConnectivityManager cm = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);

    @SuppressWarnings("deprecation")
    NetworkInfo wifiNetwork = cm
            .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    if (wifiNetwork != null && wifiNetwork.isConnected()) {
        return true;
    }

    @SuppressWarnings("deprecation")
    NetworkInfo mobileNetwork = cm
            .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    if (mobileNetwork != null && mobileNetwork.isConnected()) {
        return true;
    }

    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
    if (activeNetwork != null && activeNetwork.isConnected()) {
        return true;
    }

    return false;

}

我在这里分享相同的方法。

public void showAlert(String msg) {

          ContextThemeWrapper themedContext;
          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
           themedContext = new ContextThemeWrapper(context,android.R.style.Theme_Holo_Light_Dialog_NoActionBar);
          } else {
           themedContext = new ContextThemeWrapper(
             context,
             android.R.style.Theme_Light_NoTitleBar);
          }

            AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                    themedContext);

            alertDialogBuilder.setTitle(context.getResources().getString(R.string.app_name));
            alertDialogBuilder.setCancelable(false);
            alertDialogBuilder.setMessage(msg).setPositiveButton("Reload",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                                //Call webview again.
                                dialog.cancel();

                        }
                    });
            AlertDialog alertDialog = alertDialogBuilder.create();
            alertDialog.show();

        }

调用此方法showAlert("You need to be connected to internet to use this app press reload after turning on internet")

如何在WebView Android中使用重新加载按钮添加自定义错误消息？

1 个答案: