Editor

StringArrayTypeInputAdapter.java

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.afwsamples.testdpc.common;

import android.support.v7.widget.RecyclerView;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageView;

import com.afwsamples.testdpc.R;

import java.util.ArrayList;
import java.util.List;

public class StringArrayTypeInputAdapter extends
        RecyclerView.Adapter<StringArrayTypeInputAdapter.ViewHolder> {
    private List<String> mStringList;

public StringArrayTypeInputAdapter() {
        mStringList = new ArrayList<>();
    }

@Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.string_array_row, parent, false);
        return new ViewHolder(view);
    }

@Override
    public void onBindViewHolder(final ViewHolder holder, final int position) {
        holder.stringValue.setText(mStringList.get(position));
        if (holder.textWatcher != null) {
            holder.stringValue.removeTextChangedListener(holder.textWatcher);
        }
        holder.textWatcher = createEditTextTextWatcher(holder);
        holder.stringValue.addTextChangedListener(holder.textWatcher);
        holder.delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int adapterPosition = holder.getAdapterPosition();
                // make sure the view is not removed yet.
                if (adapterPosition != -1) {
                    mStringList.remove(adapterPosition);
                    notifyItemRemoved(adapterPosition);
                }
            }
        });
    }

@Override
    public int getItemCount() {
        return mStringList.size();
    }

public List<String> getStringList() {
        return mStringList;
    }

public void setStringList(List<String> stringList) {
        mStringList = stringList;
        notifyDataSetChanged();
    }

public class ViewHolder extends RecyclerView.ViewHolder {
        public EditText stringValue;
        public ImageView delete;
        public TextWatcher textWatcher;

public ViewHolder(View view) {
            super(view);
            stringValue = (EditText) view.findViewById(R.id.string_input);
            delete = (ImageView) view.findViewById(R.id.delete_row);
        }
    }

private TextWatcher createEditTextTextWatcher(final ViewHolder viewHolder) {
        return new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

@Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

@Override
            public void afterTextChanged(Editable editable) {
                mStringList.set(viewHolder.getAdapterPosition(), editable.toString());
            }
        };
    }
}