Question

我正在创建一个简单的Android应用程序，它有一个webview，应该显示一个url。当我将网址设为google.com或facebook.com时，它会正确加载，但是当我提供我的网址（qbo.intuit.com）时，它不会加载并提供“未捕获的TypeError：无法读取属性'getItem'的null “错误。我在这里粘贴我的代码。我使用的是Compile sdk版本：API 22：Android 5.1（Lollipop），版本 - Android Studio 1.4，内部版本号：AI-141.2288178，Android SDK工具：24.4.0，jdk1.7.0_80。存在类似的问题，但它对我没有帮助。请帮助我是android的新手。 MainActivity.java

  public JsonResult Grid(string sidx, string sord, int page, int rows)
    {
        int pageIndex = Convert.ToInt32(page) - 1;
        int pageSize = rows;
        IEnumerable<Student> StudentData = db.Students.ToList();
        int totalRecords = StudentData.Count();
        var totalPages = (int)Math.Ceiling((float)totalRecords / (float)rows);
        if (sord.ToUpper() == "DESC")
        {
            StudentData = StudentData.OrderByDescending(s => s.Id);
            StudentData = StudentData.Skip(pageIndex * pageSize).Take(pageSize);
        }
        else
        {
            StudentData = StudentData.OrderBy(s => s.Id);
            StudentData = StudentData.Skip(pageIndex * pageSize).Take(pageSize);
        }
        var jsonData = new
        {
            total = totalPages,
            page,
            records = totalRecords,
            rows = StudentData
        };
        return Json(jsonData, JsonRequestBehavior.AllowGet);
    }



    [HttpPost]
    [ValidateAntiForgeryToken]
    public string Create([Bind(Exclude = "Id")] Student student)
    {
        string msg;
        try
        {
            if (ModelState.IsValid)
            {
                db.Students.Add(student);
                db.SaveChanges();
                msg = "Saved Successfully";
            }
            else
            {
                msg = "Validation data not successfull";
            }
        }
        catch (Exception ex)
        {
            msg = "Error occured:" + ex.Message;
        }
        return msg;
    }
    public string Edit(Student student)
      {
        string msg;
        try
        {
            if (ModelState.IsValid)
            {
                db.Entry(student).State = EntityState.Modified;
                db.SaveChanges();
                msg = "Saved Successfully";
            }
            else
            {
                msg = "Validation data not successfull";
            }
        }
        catch (Exception ex)
        {
            msg = "Error occured:" + ex.Message;
        }
        return msg;
    }


    //Deletes the product
    public string Delete(int Id)
    {
        Student student = db.Students.Find(Id);
        db.Students.Remove(student);
        db.SaveChanges();
        return "Deleted successfully";
    }

AndriodManifest.xml

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    String url= "https://qbo.intuit.com/";
    WebView view= (WebView) this.findViewById(R.id.webView);

     final WebViewClient client = new WebViewClient() {

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return false;
        }

    };

        WebSettings settings = view.getSettings();
        settings.setJavaScriptEnabled(true);
    view.setWebViewClient(client);
        view.loadUrl(url);


}

<?xml version="1.0" encoding="utf-8"?>

Answer 1

你需要做

WebSettings settings = webView.getSettings();
settings.setDomStorageEnabled(true);

查看详情 ERROR/Web Console: Uncaught TypeError: Cannot call method 'getItem' of null at http://m.youtube.com/:844

Android Webview：“未捕获的TypeError：无法读取null的属性'getItem'”

1 个答案: