Question

我在单个布局页面中有4个微调器，每个都有来自服务器的不同数据集。我曾使用Base-Adapter类（GETVIEW）方法来设置显示成员部分。

我的问题是：是否可以将单个Base-Adapter类用于多个微调控件？如何在GETVEW方法中设置不同的显示成员部分？

注意：我们正在使用WCF RESTful服务来获取在线数据。

在下面找到Base Adapter中的示例代码。

class EyeColorAdapter : BaseAdapter<MMS>
{
    List<MMS> items;
    Activity context;
    public EyeColorAdapter(Activity context, IEnumerable<MMS> items)
        : base()
    {
        this.context = context;
        this.items = items.ToList();
    }
    public override long GetItemId(int position)
    {
        return position;
    }
    public override MMS this[int position]
    {
        get { return items[position]; }
    }
    public override int Count
    {
        get { return items.Count; }
    }

    public override View GetView(int position, View convertView, ViewGroup parent)
    {
        View view = convertView;
        if (view == null)
        {
            view = context.LayoutInflater.Inflate(Android.Resource.Layout.SimpleListItem1, null);
        }
        // This is single spinner control display part. How to Check multiple spinner control condition here to set Display member part.
        view.FindViewById<TextView>(Android.Resource.Id.Text1).Text = items[position].WONO.ToString();
        view.FindViewById<TextView>(Android.Resource.Id.Text1).SetTextColor(Android.Graphics.Color.Black);
        return view;
    }
}

Activitiy Class：

  public class Activity1 : Activity
    {
        List<MMS> items1;
        protected override void OnCreate(Bundle bundle)
        {
            try
            {
                base.OnCreate(bundle);
                SetContentView(Resource.Layout.Main);
                var request = HttpWebRequest.Create("http://192.168.0.72/eFACiLiTYPhone/mobileservice/WinPhoneWCFService.svc/listingworkorder/x");
                request.ContentType = "application/json";
                request.Method = "GET";
                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
                {
                    using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                    {
                        var content = reader.ReadToEnd();
                        if (string.IsNullOrWhiteSpace(content))
                        {
                            Console.Out.WriteLine("Response contained empty body...");
                        }
                        else
                        {
                            Console.Out.WriteLine("Response Body: \r\n {0}", content);
                        }
                        List<MMS> myDeserializedObjList =
                            (List<MMS>)Newtonsoft.Json.JsonConvert.DeserializeObject(content, typeof(List<MMS>));
                        Spinner spinr = FindViewById<Spinner>(Resource.Id.spinner1);
                        spinr.Adapter = new EyeColorAdapter(this, myDeserializedObjList);
                    }
                }
                var request1 = HttpWebRequest.Create("http://192.168.0.72/eFACiLiTYPhone/mobileservice/WinPhoneWCFService.svc/listingworkorder/x");
                request1.ContentType = "application/json";
                request1.Method = "GET";
                using (HttpWebResponse response1 = request1.GetResponse() as HttpWebResponse)
                {
                    using (StreamReader reader1 = new StreamReader(response1.GetResponseStream()))
                    {
                        var content1 = reader1.ReadToEnd();
                        if (string.IsNullOrWhiteSpace(content1))
                        {
                            Console.Out.WriteLine("Response contained empty body...");
                        }
                        else
                        {
                            Console.Out.WriteLine("Response Body: \r\n {0}", content1);
                        }
                        List<MMS> myDeserializedObjList1 =
                            (List<MMS>)Newtonsoft.Json.JsonConvert.DeserializeObject(content1, typeof(List<MMS>));

                        Spinner spinr1 = FindViewById<Spinner>(Resource.Id.spinner2);
                        spinr1.Adapter = new EyeColorAdapter(this, myDeserializedObjList1);

                        items1 = myDeserializedObjList1;
                        int index = items1.IndexOf(items1.Where(x => x.WONO + "" == Convert.ToString("INDIA2085")).FirstOrDefault());
                        spinr1.SetSelection(index);
                    }
                }
            }
            catch (Exception ex)
            {
                Toast.MakeText(this, ex.InnerException.ToString(), ToastLength.Long);
            }
        }
    }
    public class MMS
    {
        public string WONO { get; set; }
        public string EquipmentNo { get; set; }
        public string Status { get; set; }
        public string JobDescription { get; set; }
        public object Raised { get; set; }
        public string Hier { get; set; }
    }

我是andriod开发的新手。如果我的理解是错误的，请指导我。

Answer 1

这可以完成，您可以使用单个适配器实现。

您的要求并不具体，因此我可以考虑两种情况：

〜您有4个显示不同数据的微调器，但使用相同的布局。

您需要的只是一个适配器类的4个不同实例。每实例当然会有一个不同的数组对象作为一个构造函数中的参数：

MyArrayAdapter adapter1 = new MyArrayAdapter(...., items1, .....);
....
....
MyArrayAdapter adapter4 = new MyArrayAdapter(...., items4, .....);

spinner1.setAdapter(adapter1);
....
....
spinner4.setAdapter(adapter4);

〜第二种可能性是拥有4个微调器小部件，每个小部件都有其独特的布局。

在这种情况下，您需要自定义getView（）方法。至给你一个想法，你将在你的构造函数中传递一个标志适配器。基于此标志，您将膨胀不同的视图：

if (flag == 1) {
    view = context.LayoutInflater.Inflate(R.layout.unique_layout_1, null);
} else if ( flag == 2) {
    view = context.LayoutInflater.Inflate(R.layout.unique_layout_1, null);
}
....
....

请注意，在任何一种情况下，您只需要一个适配器及其多个实例。希望这能为你解决问题。

用于多个旋转器的单个自定义适配器类

1 个答案: