从Listview的Edittext字段中获取所有值（超过10个edittext）

Question

I have a listview with multiple edittexts on each row. I would like to get the values from each Edittexts and its position so I can call them on mainactivity. I tried using hashmap and etc but I can't get any of them to work. I spent days trying to figure this out while looking through answers on stack overflow and have not solved it yet. I know I should implement textwatcher and save the changes on hashmap with position. so far, I can get the position of entire listview without a problem. Only thing I'm having trouble is not losing the content of the edittexts when I scroll up and down. Here is my code. Code runs without a problem!

package com.example.jung.evergreen;


public class InteractiveArrayAdapter extends ArrayAdapter {
private int editingPosition=0;
private final List<String> list;
String text[];
private final Activity context;
public ArrayList myItems = new ArrayList();
private HashMap<String, String> textValues = new HashMap<String, String>();

public InteractiveArrayAdapter(Activity context, List<String> list) {
    super(context, R.layout.item, list);
    this.context = context;
    this.list = list;
    text=new String[list.size()];
}

static class ViewHolder {
    protected TextView text;
    protected EditText editbox;

}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
    View view = null;
    int temp = position;
    ViewHolder holder = null;
    LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    if (convertView == null) {
        holder = new ViewHolder();
        convertView = mInflater
                .inflate(R.layout.item, parent, false);

        holder.text = (TextView) convertView.findViewById(R.id.textView3);
        holder.editbox = (EditText) convertView.findViewById(R.id.editText);
        holder.editbox.setTag(position);


        convertView.setTag(holder);
    }
    else
    {
        holder = (ViewHolder) convertView.getTag();
    }
    holder.text.setText(list.get(position));
    holder.editbox.setText(text[temp]);

    holder.editbox.removeTextChangedListener(watcher);





    holder.editbox.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (!hasFocus) {
                editingPosition = position;
                //   final int position = v.getId();
                //    final EditText Caption = (EditText) v;
                //    String val = Caption.getText().toString();  // you have the value here
                //    Log.e("Hellooooooooooo", val);

                //    if (val.compareTo("") != 0) {
                //       String accountName = "";
                //       if (Caption.getTag() != null) {
                //           accountName = Caption.getTag().toString();  // get the tag

                //       }
                //   }

            }
        }
    });

    holder.editbox.addTextChangedListener(watcher);

    return convertView;
}


private TextWatcher watcher = new TextWatcher() {
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        text[editingPosition] = s.toString();
        textValues.put(text[editingPosition], s.toString());
        Log.e("IT CHANGED", text[editingPosition] + " on " + editingPosition);
    }
public void beforeTextChanged(CharSequence s, int start, int count, int after) { }
public void afterTextChanged(Editable s) { }
};


}

Here is the image of it running

Answer 1

To keep things simple, you can identify each EditText with it's 'tag' attribute. A Listview in android will reuse views and by setting a tag to the EditText in each 'getView', you will be able to receive it's position in the TextWatcher.

First extend your own TextWatcher, so it can hold a reference to the view:

public static class CustomTextWatcher implements TextWatcher {

    private EditText mEditText;

    public MyTextWatcher(EditText editText) {
       mEditText = editText;
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        final int position = Integer.valueOf(mEditText.getTag().toString())
        text[position] = s.toString();

        ...
     }
}

Then implement it in your 'getView' like this:

@Override
public View getView(final int position, View convertView, ViewGroup parent) {

    ... 

    holder.text.setText(list.get(position));
    holder.editbox.setTag(position);

    holder.editbox.addTextChangedListener(new CustomTextWatcher(holder.editbox));

    ...

    return convertView;
}

Credits for the custom TextWatcher go to: How to get the View in TextWatcher method context?