Get data from list of EditTexts in a recycler view to a list? - android-recyclerview

Question

I am having an EditText in a TTextInputLayout as a Row_item for my recycler view, On the click of a button I am incrementing the count value in that recycler view and adding the edit text views in the app. After having as many views as I want, I am putting some data in those EditTexts and After all this I press save button and all the data from EditTexts should save in a list. I tried the textwatcher Property in xamarin.android but not able to perform that.
In my activity I also tried
var view = addChildRecyclerView.FindViewHolderForAdapterPosition(i);
var holder = view as fragmentRecyclerViewAdapterViewHolder;
if (holder != null)
{
holder.childname.FindViewById<TextInputLayout>(Resource.Id.enterChildNameTextView);
childlisttosend.Add(holder.childname.EditText.Text);
But sometimes I get holder as a null and some valus are missed to be put in the list.
I tried textchange property but it puts every single alphabet in the list, like
for index 1 it is "m"
for index 2 it is "ma"
for index 3 it is "man"
for index 4 it is "mani"
for index 5 it is "manis"
for index 6 it is "manish"
It is of no use. Please sugggest a solution.
adapter is
namespace assessment1_part2_v2.Fragment
{
public class addFamilyFragment : DialogFragment
{
public TextInputLayout fathername, mothername, address;
public MaterialButton addchild, savebutton;
public ArrayAdapter adapter;
public ListView listview;
public familyData familydata = new familyData();
public List<childData> childrenList = new List<childData>();
public editTextAdapter EditTextAdapter;
public event EventHandler<DataSenderClass> famaDataSender;
public RecyclerView enterChildRecyclerView;
public List<string> addChildDummyData = new List<string>();
public TextInputLayout enterChildEditTExt;
public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.Inflate(Resource.Layout.addfam_layout, container, false);
connectingViews(view);
buttonClicks();
return view;
}
public class DataSenderClass : EventArgs
{
public familyData data { get; set; }
}
private void buttonClicks()
{
addchild.Click += Addchild_Click;
savebutton.Click += Savebutton_Click;
}
private void Savebutton_Click(object sender, EventArgs e)
{
//father, mother and address
familydata.fathername = fathername.EditText.Text;
familydata.mothername = mothername.EditText.Text;
familydata.location = address.EditText.Text;
familydata.children = new List<childData>();
List<childData> list = new List<childData>();
List<string> dummyCheck = new List<string>();
for (int i = 0; i <= addChildDummyData.Count; i++)
{
var viewholder = enterChildRecyclerView.FindViewHolderForAdapterPosition(i);
var holder = viewholder as editTextAdapterViewHolder;
// holder.addChildEditTExt;
if(holder != null)
{
holder.addChildEditTExt.FindViewById<TextInputLayout>(Resource.Id.enterChildEditTExt);
dummyCheck.Add(holder.addChildEditTExt.EditText.Text);
}
}
var x = dummyCheck;
addChildDummyData.Clear();
famaDataSender?.Invoke(this, new DataSenderClass { data = familydata });
this.Dismiss();
}
private void Addchild_Click(object sender, EventArgs e)
{
if (addChildDummyData.Count == 0)
{
addChildDummyData.Add("");
EditTextAdapter = new editTextAdapter(addChildDummyData);
enterChildRecyclerView.SetLayoutManager(new LinearLayoutManager(Activity));
enterChildRecyclerView.SetAdapter(EditTextAdapter);
int x = enterChildRecyclerView.ChildCount;
}
else
{
addChildDummyData.Add("");
EditTextAdapter.NotifyItemInserted(addChildDummyData.Count - 1);
int x = enterChildRecyclerView.ChildCount;
}
}
private void connectingViews(View view)
{
fathername = view.FindViewById<TextInputLayout>(Resource.Id.enterFatherNameEditText);
mothername = view.FindViewById<TextInputLayout>(Resource.Id.enterMotherNameEditText);
address = view.FindViewById<TextInputLayout>(Resource.Id.enterAddressEditText);
addchild = view.FindViewById<MaterialButton>(Resource.Id.addChildButton);
savebutton = view.FindViewById<MaterialButton>(Resource.Id.saveButton);
enterChildRecyclerView = view.FindViewById<RecyclerView>(Resource.Id.enterChildRecyclerView);
//listview = (ListView)view.FindViewById(Resource.Id.enterChildRecyclerView);
}
}
} `

Answer 1

We couldn't see the code of editTextAdapter.
But you can refer to my code ,my RecyclerView has an Edittext in each item and we can get data from the input list.
I put TextWatcher in my RecyclerView.ViewHolder(PhotoViewHolder.cs).
PhotoViewHolder.cs
public class PhotoViewHolder: RecyclerView.ViewHolder
{
public ImageView Image { get; private set; }
public TextView Caption { get; private set; }
public CheckBox MyCheckBox { get; set; }
public bool IsChecked { get; set; }
public EditText MyEditText { get; set; }
public MyTextWatcher myTextWatcher;
public Button imAddBefore { get; private set; }
public Button imAddAfter { get; private set; }
public PhotoViewHolder(View itemView, Action<int> listener, MyTextWatcher myWatcher ) : base(itemView)
{
//Image = itemView.FindViewById<ImageView> (Resource.Id.imageView);
Caption = itemView.FindViewById<TextView>(Resource.Id.textView);
MyCheckBox = itemView.FindViewById<CheckBox>(Resource.Id.myCheckBox);
DeleteButton = itemView.FindViewById<Button>(Resource.Id.deleteBtn);
MyEditText = itemView.FindViewById<EditText>(Resource.Id.mEditText);
this.myTextWatcher = myWatcher;
// add TextWatcher here
MyEditText.AddTextChangedListener(myTextWatcher);
// other code
}
public class MyTextWatcher : Java.Lang.Object, ITextWatcher
{
int position;
public void AfterTextChanged(IEditable s)
{
}
public void BeforeTextChanged(ICharSequence s, int start, int count, int after)
{
}
public void OnTextChanged(ICharSequence s, int start, int before, int count)
{ //mInput is a field in my item model
PhotoAlbumAdapter.mPhotoAlbum[position].mInput = s.ToString();
}
public void updatePosition(int position)
{
this.position = position;
}
}
}
My RecyclerView.Adapter is PhotoAlbumAdapter.cs
PhotoAlbumAdapter.cs
public class PhotoAlbumAdapter: RecyclerView.Adapter
{
public event EventHandler<int> ItemClick;
public static List<Photo> mPhotoAlbum = new List<Photo>();
public static RecyclerView.Adapter adapter;
public PhotoAlbumAdapter(List<Photo> branchesList)
{
adapter = this;
mPhotoAlbum = branchesList;
}
public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
View itemView = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.PhotoCardView, parent, false);
PhotoViewHolder vh = new PhotoViewHolder(itemView, OnClick, new PhotoViewHolder.MyTextWatcher());
return vh;
}
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
PhotoViewHolder vh = holder as PhotoViewHolder;
Photo item= mPhotoAlbum[position];
vh.Caption.Text = item.Caption;
// here we call function `updatePosition` in our TextWatcher class
vh.myTextWatcher.updatePosition(vh.AdapterPosition);
vh.MyEditText.Text = item.mInput;
// other code
}
public override int ItemCount
{
get { return mPhotoAlbum.Count; }
}
// Raise an event when the item-click takes place:
void OnClick(int position)
{
if (ItemClick != null)
ItemClick(this, position);
}
}
In my activity, we can get the data from the recycleview like this:
List<Photo> items= new List<Photo>();
mAdapter = new PhotoAlbumAdapter(items);
mRecyclerView.SetAdapter(mAdapter);
The result is:
for (int i=0;i< items.Count;i++) {
Photo temp = items[i];
System.Diagnostics.Debug.WriteLine( "The "+i +" result is: "+" Caption= " + temp.Caption + "<---> input = " + temp.mInput);
}