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DataLayer / Wearable / src / com.example.android.wearable.datalayer / fragments /

DataFragment.java

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/*
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 * Copyright (C) 2015 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.wearable.datalayer.fragments;
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import android.app.Fragment;
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import android.content.Context;
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import android.os.Bundle;
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import android.support.annotation.Nullable;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ArrayAdapter;
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import android.widget.ListView;
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import android.widget.TextView;
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import com.example.android.wearable.datalayer.R;
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/**
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 * A fragment that shows a list of DataItems received from the phone
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 */
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public class DataFragment extends Fragment {
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    private DataItemAdapter mDataItemListAdapter;
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    private TextView mIntroText;
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    private boolean mInitialized;
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    @Nullable
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    @Override
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    public View onCreateView(LayoutInflater inflater, ViewGroup container,
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            Bundle savedInstanceState) {
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        View view = inflater.inflate(R.layout.data_fragment, container, false);
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        ListView dataItemList = (ListView) view.findViewById(R.id.dataItem_list);
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        mIntroText = (TextView) view.findViewById(R.id.intro);
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        mDataItemListAdapter = new DataItemAdapter(getActivity(),
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                android.R.layout.simple_list_item_1);
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        dataItemList.setAdapter(mDataItemListAdapter);
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        mInitialized = true;
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        return view;
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    }
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    public void appendItem(String title, String text) {
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        if (!mInitialized) {
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            return;
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        }
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        mIntroText.setVisibility(View.INVISIBLE);
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        mDataItemListAdapter.add(new Event(title, text));
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    }
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    private static class DataItemAdapter extends ArrayAdapter<Event> {
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        private final Context mContext;
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        public DataItemAdapter(Context context, int unusedResource) {
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            super(context, unusedResource);
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            mContext = context;
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        }
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        @Override
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        public View getView(int position, View convertView, ViewGroup parent) {
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            ViewHolder holder;
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            if (convertView == null) {
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                holder = new ViewHolder();
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                LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(
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                        Context.LAYOUT_INFLATER_SERVICE);
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                convertView = inflater.inflate(android.R.layout.two_line_list_item, null);
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                convertView.setTag(holder);
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                holder.text1 = (TextView) convertView.findViewById(android.R.id.text1);
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                holder.text2 = (TextView) convertView.findViewById(android.R.id.text2);
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            } else {
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                holder = (ViewHolder) convertView.getTag();
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            }
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            Event event = getItem(position);
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            holder.text1.setText(event.title);
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            holder.text2.setText(event.text);
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            return convertView;
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        }
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        private class ViewHolder {
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            TextView text1;
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            TextView text2;
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        }
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    }
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    private class Event {
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        String title;
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        String text;
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        public Event(String title, String text) {
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            this.title = title;
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            this.text = text;
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        }
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    }
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}
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