My guess is that you are reusing the ConvertView cells in:
public override View GetView(int position, View convertView,
ViewGroup parent)
You only need to subscribe to the events the first time you create each
"row".
When you scroll down/up and Android reuses the rows, then you need to work
out how to reprogram the event handlers
It might be useful for you to use Tag properties in this case - to store
the reference to the current object attached to the "row"
Stuart
On 7 June 2012 09:55, Marcus <m...@wise.no> wrote:
> Hi, new to Mono for Android. Have problem with Click event in Custom
> Adapter.
> I am using a custom adapter for a ListView where the layout states a button
> and a CheckBox on each row. Upon clicking the button, the text on the
> button will change. Button and CheckBox is connected to .Click event inside
> GetView.
>
> Problem is, when clicking one button or checkbox, several click events for
> several buttons/checkboxes on different rows(positions) will fire, one
> after
> the other. This will happen when clicking some, but not all
> buttons/checkboxes(position 0 always bugs).
> I have worked allot with custom adapters in Java(Android) and have never
> seen this problem before. A bug or my code is faulty? Any thoughts on
> solution??
> Using VS 2010 and Honeycomb project with latest updates for VS2010 and
> Monodroid.
>
>
> Custom Adapter:
>
> public class IconAdapter : BaseAdapter
> {
> Activity cont;
> SplitActivity outerClass;
> public IconAdapter(Activity cont, int textViewResourceId,
> SplitActivity outerClass)
> :base()
> {
> this.cont = cont;
> this.outerClass = outerClass;
> }
>
> public override int Count {
> get { return outerClass.items.Count; }
> }
>
> public override Java.Lang.Object GetItem (int position) {
> return null;
> }
>
> public override long GetItemId (int position) {
> return position;
> }
>
> public override View GetView(int position, View convertView,
> ViewGroup parent)
> {
> var item = outerClass.items[position];
> // var row = (convertView ??
> cont.LayoutInflater.Inflate(Resource.Layout.main3, parent, false)) as
> LinearLayout;
> View row = convertView;
> if (row == null)
> {
> LayoutInflater inflater =
> (LayoutInflater)cont.GetSystemService(Context.LayoutInflaterService);
> row =
> inflater.Inflate(Resource.Layout.main3, null, false);
> }
> CheckBox check =
> row.FindViewById<CheckBox>(Resource.Id.checkBox1);
> Button amount =
> row.FindViewById<Button>(Resource.Id.amountEdit);
>
> check.Text = " " + item.tagId;
> check.Checked = item.check;
> amount.Text = item.amount;
>
> check.Click += (sender, e) =>
> {
> Toast.MakeText(cont, "Checked" + position,
> ToastLength.Short).Show();
> };
>
> amount.Click += (sender, e) =>
> {
> outerClass.onNewAmount(position);
> };
> return (row);
> }
> }
>
>
> Layout for ListView:
>
> <?xml version="1.0" encoding="utf-8"?>
> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
> android:layout_width="match_parent"
> android:layout_height="match_parent">
>
> <CheckBox
> android:id="@+id/checkBox1"
> android:layout_weight="2"
> android:layout_width="0dp"
> android:layout_height="wrap_content"
> android:padding="20dp"
> android:textSize="30dp"
> android:text="CheckBox" />
> <Button
> android:id="@+id/amountEdit"
> android:layout_weight="1"
> android:layout_width="0dp"
> android:layout_height="wrap_content"
> android:padding="20dp"
> android:textSize="20sp"
> />
> </LinearLayout>
>
>
> Main Class:
>
> namespace TagApp
> {
> [Activity(Label = "My Activity")]
> public class SplitActivity : Activity
> {
> List<TagDetails> items;
> CheckBox checkAll;
> private Button storeBtn;
> ListView lv;
> IconAdapter iconadapt;
>
> protected override void OnCreate(Bundle bundle)
> {
> base.OnCreate(bundle);
> SetContentView(Resource.Layout.main4);
> items = new List<TagDetails>();
> lv = FindViewById<ListView>(Resource.Id.my_list);
> storeBtn = FindViewById<Button>(Resource.Id.storeBtn);
> checkAll = FindViewById<CheckBox>(Resource.Id.checkBoxAll);
> setupList();
> addToAdapter();
> }
>
> public void addToAdapter()
> {
> iconadapt = new IconAdapter(this, Resource.Layout.main3, this);
> lv.Adapter = iconadapt;
> }
>
> public void onNewAmount(int position)
> {
> int inInt = Convert.ToInt32(items[position].amount);
> inInt++;
> string sInt = "" + inInt;
> items[position].amount = sInt;
> iconadapt.NotifyDataSetChanged();
> }
>
> public class IconAdapter : BaseAdapter
> {
> ............
> }
>
> public void setupList()
> {
> items.Add(new TagDetails() {Id = 0, amount = "8", check =
> true});
> items.Add(new TagDetails() {Id = 0, tagId = "tag0",
> amount = "8", check =
> true});
> items.Add(new TagDetails() {Id = 1, tagId = "tag1",
> amount = "5", check =
> true});
> items.Add(new TagDetails() {Id = 2, tagId = "tag2",
> amount = "2", check =
> true});
> items.Add(new TagDetails() {Id = 3, tagId = "tag3",
> amount = "11", check
> = true});
> items.Add(new TagDetails() {Id = 4, tagId = "tag4",
> amount = "68", check
> = true});
> items.Add(new TagDetails() {Id = 5, tagId = "tag5",
> amount = "0", check =
> true});
> }
>
> class TagDetails
> {
> public int Id { get; set; }
> public string tagId { get; set; }
> public string amount { get; set; }
> public Boolean check { get; set; }
> }
> }
> }
>
>
> Main Class Layout:
>
> <?xml version="1.0" encoding="utf-8"?>
> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
> android:orientation="vertical"
> android:layout_width="match_parent"
> android:layout_height="match_parent">
>
> <LinearLayout
> style="@android:style/ButtonBar"
> android:gravity="center_horizontal"
> android:layout_height="wrap_content"
> android:layout_width="match_parent">
>
> <Button
> android:id="@+id/storeBtn"
> android:layout_width="match_parent"
> android:layout_height="wrap_content"
> android:text="STORE"
> android:layout_marginLeft="30dp"
> android:layout_marginBottom="5dp"
> android:layout_marginRight="30dp"
> android:background="#ffffff00"
> android:textColor="#ff000000"
> android:textSize="30sp"
> />
> </LinearLayout>
>
> <LinearLayout
> android:layout_height="wrap_content"
> android:layout_width="match_parent">
>
> <CheckBox
> android:id="@+id/checkBoxAll"
> android:layout_weight="2"
> android:layout_width="0dp"
> android:layout_height="wrap_content"
> android:padding="20dp"
> android:textSize="30dp"
> android:checked="true"
> android:text=" Select All" />
>
> <TextView
> android:id="@+id/descriptionText"
> android:layout_weight="1"
> android:layout_width="0dp"
> android:layout_height="wrap_content"
> android:textSize="30dp"
> android:text="Amount"
> />
> </LinearLayout>
>
> <LinearLayout
> android:layout_height="wrap_content"
> android:layout_width="match_parent">
>
> <ListView
> android:id="@+id/my_list"
> android:layout_width="match_parent"
> android:layout_height="match_parent">
> </ListView>
> </LinearLayout>
> </LinearLayout>
>
>
> --
> View this message in context:
> http://mono-for-android.1047100.n5.nabble.com/Click-event-in-Custom-Adapter-fire-multiple-positions-tp5710211.html
> Sent from the Mono for Android mailing list archive at Nabble.com.
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