com.google.maps.android.utils.demo.MyItemReader.java Source code

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Here is the source code for com.google.maps.android.utils.demo.MyItemReader.java

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/*
 * Copyright 2013 Google Inc.
 *
 * 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.google.maps.android.utils.demo;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import com.google.maps.android.utils.demo.model.MyItem;

public class MyItemReader {

    /*
     * This matches only once in whole input,
     * so Scanner.next returns whole InputStream as a String.
     * http://stackoverflow.com/a/5445161/2183804
     */
    private static final String REGEX_INPUT_BOUNDARY_BEGINNING = "\\A";

    public List<MyItem> read(InputStream inputStream) throws JSONException {
        List<MyItem> items = new ArrayList<MyItem>();
        String json = new Scanner(inputStream).useDelimiter(REGEX_INPUT_BOUNDARY_BEGINNING).next();
        JSONArray array = new JSONArray(json);
        for (int i = 0; i < array.length(); i++) {
            JSONObject object = array.getJSONObject(i);
            double lat = object.getDouble("lat");
            double lng = object.getDouble("lng");
            items.add(new MyItem(lat, lng));
        }
        return items;
    }
}