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POCustom Arrayadapter with Custom Filter
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  1. POCustom Arrayadapter with Custom Filter
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    copied!<p>i will give you a short review about what i'm trying to do: I want to fill the DropDown of a AutoCompleteTextView with my own Objects. those objects contain 3 Strings. In the list_item_view should be 2 of the strings. This List should be filterable.</p> <p>Now a bit of code, what i've done 'til now:</p> <p>My CustomAdapter looks like this:</p> <pre><code>public class CustomerAdapter : ArrayAdapter&lt;CustomerSingle&gt;, IFilterable { private ws_test.Test ws=null; public static List&lt;CustomerSingle&gt; _contactList; private Activity _activity; private CustomerAdapterFilter filter = null; public CustomerAdapter(Activity activity, Context context,int resourceId)//List&lt;CustomerSingle&gt; assets) :base(context,resourceId)//,assets) { _activity = activity; ws=new ws_test.Test(); _contactList = new List&lt;CustomerSingle&gt;(); } public static List&lt;CustomerSingle&gt; getCustomerList() { return _contactList; } public void Add(CustomerSingle item) { _contactList.Add(item); } public override int Count { get { return _contactList.Count; } } public override long GetItemId(int position) { return _contactList[position].id; } public override View GetView(int position, View convertView, ViewGroup parent) { var view = convertView ?? _activity.LayoutInflater.Inflate(Resource.Layout.details, parent, false); var contactName = view.FindViewById&lt;TextView&gt;(Resource.Id.Name); var contactAddress = view.FindViewById&lt;TextView&gt;(Resource.Id.Address); contactName.Text = _contactList[position].name;// +"\n" + _contactList[position].address; contactAddress.Text = _contactList[position].address; return view; } public override Filter Filter { get { return new CustomerAdapterFilter(); } } public override void NotifyDataSetChanged() { base.NotifyDataSetChanged(); } public override void NotifyDataSetInvalidated() { base.NotifyDataSetInvalidated(); } } </code></pre> <p>The CustomerSingle looks like this:</p> <pre><code>public class CustomerSingle { public string no { get; set; } public string name { get; set; } public string address { get; set; } public int id { get; set; } public CustomerSingle(string no, string name, string address, int id) { this.address = address; this.name = name; this.no = no; this.id = id; } } </code></pre> <p>Ok, now i need an own Filter what im trying to do here: public class CustomerAdapterFilter:Filter {</p> <pre><code> protected object mLock = new object(); protected List&lt;CustomerSingle&gt; mOriginalValues = null; protected override FilterResults PerformFiltering(Java.Lang.ICharSequence prefix) { FilterResults results = new FilterResults(); if (mOriginalValues == null) { lock(mLock) { mOriginalValues = new List&lt;CustomerSingle&gt;(CustomerAdapter._contactList); } } if (prefix == null || prefix.Length() == 0) { lock (mLock) { List&lt;CustomerSingle&gt; list = new List&lt;CustomerSingle&gt;(mOriginalValues); IntPtr listptr = list. results.Values = list; results.Count = list.Count; } } else { String prefixString = prefix.ToString().ToLowerInvariant(); List&lt;CustomerSingle&gt; values = mOriginalValues; int count = values.Count; List&lt;CustomerSingle&gt; newValues = new List&lt;CustomerSingle&gt;(count); for (int i = 0; i &lt; count; i++) { CustomerSingle value = values.ElementAt(i); String valueText = value.ToString().ToLowerInvariant(); // First match against the whole, non-splitted value if (valueText.StartsWith(prefixString)) { newValues.Add(value); } else { String[] words = valueText.Split(' '); int wordCount = words.Length; for (int k = 0; k &lt; wordCount; k++) { if (words[k].StartsWith(prefixString)) { newValues.Add(value); break; } } } } results.Values = (Object) newValues; results.Count = newValues.Count; } return results; } protected override void PublishResults(Java.Lang.ICharSequence constraint, Filter.FilterResults results) { //noinspection unchecked var mObjects = results.Values; if (results.Count &gt; 0) { NotifyDataSetChanged(); } else { notifyDataSetInvalidated(); } } } </code></pre> <p>My problem is, i can't Convert from Java.Lang.Object to my CustomerSingle... Deos someone have an Idea?</p> <p>Thank you!</p> <p>Update: I changed to JavaList in the filter and did the extension to Java.Lang.Object at the CustomerSingle</p>
 

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