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/*
* Copyright (C) 2014 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.example.android.supportv7.widget.adapter;
import android.content.Context;
import android.graphics.Color;
import android.support.v7.widget.RecyclerView;
import android.util.TypedValue;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Collections;
public class SimpleStringAdapter extends RecyclerView.Adapter<SimpleStringAdapter.ViewHolder> {
private int mBackground;
private ArrayList<String> mValues;
public static class ViewHolder extends RecyclerView.ViewHolder {
public String mBoundString;
public TextView mTextView;
public ViewHolder(TextView v) {
super(v);
mTextView = v;
}
@Override
public String toString() {
return super.toString() + " '" + mTextView.getText();
}
}
public String getValueAt(int position) {
return mValues.get(position);
}
public SimpleStringAdapter(Context context, String[] strings) {
TypedValue val = new TypedValue();
if (context.getTheme() != null) {
context.getTheme().resolveAttribute(
android.R.attr.selectableItemBackground, val, true);
}
mBackground = val.resourceId;
mValues = new ArrayList<String>();
Collections.addAll(mValues, strings);
}
public void swap(int pos1, int pos2) {
String tmp = mValues.get(pos1);
mValues.set(pos1, mValues.get(pos2));
mValues.set(pos2, tmp);
notifyItemRemoved(pos1);
notifyItemInserted(pos2);
}
@Override
public SimpleStringAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final ViewHolder h = new ViewHolder(new TextView(parent.getContext()));
h.mTextView.setMinimumHeight(128);
h.mTextView.setPadding(20, 0, 20, 0);
h.mTextView.setFocusable(true);
h.mTextView.setBackgroundResource(mBackground);
RecyclerView.LayoutParams lp = new RecyclerView.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
lp.leftMargin = 10;
lp.rightMargin = 5;
lp.topMargin = 20;
lp.bottomMargin = 15;
h.mTextView.setLayoutParams(lp);
return h;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.mBoundString = mValues.get(position);
holder.mTextView.setText(position + ":" + mValues.get(position));
holder.mTextView.setMinHeight((200 + mValues.get(position).length() * 10));
holder.mTextView.setBackgroundColor(getBackgroundColor(position));
}
private int getBackgroundColor(int position) {
switch (position % 4) {
case 0: return Color.BLACK;
case 1: return Color.RED;
case 2: return Color.DKGRAY;
case 3: return Color.BLUE;
}
return Color.TRANSPARENT;
}
@Override
public int getItemCount() {
return mValues.size();
}
}
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