Print the json representation of a List to the given writer. - Android File Input Output

Android examples for File Input Output:Json

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Description

Print the json representation of a List to the given writer.

Demo Code

/*/*  w w  w  .j a  v a2 s .  c o m*/
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Segment, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
import android.util.JsonReader;
import android.util.JsonToken;
import android.util.JsonWriter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import static com.segment.analytics.Utils.createMap;
import static com.segment.analytics.Utils.isNullOrEmpty;

public class Main{
    /** Print the json representation of a List to the given writer. */
    private static void listToWriter(List<?> list, JsonWriter writer)
            throws IOException {
        writer.beginArray();
        for (Object value : list) {
            write(value, writer);
        }
        writer.endArray();
    }
    private static void write(Object value, JsonWriter writer)
            throws IOException {
        if (value == null) {
            writer.nullValue();
        } else if (value instanceof Number) {
            writer.value((Number) value);
        } else if (value instanceof Boolean) {
            writer.value((Boolean) value);
        } else if (value instanceof List) {
            listToWriter((List) value, writer);
        } else if (value instanceof Map) {
            mapToWriter((Map) value, writer);
        } else {
            writer.value(String.valueOf(value));
        }
    }
    /** Print the json representation of a map to the given writer. */
    private static void mapToWriter(Map<?, ?> map, JsonWriter writer)
            throws IOException {
        writer.beginObject();
        for (Map.Entry<?, ?> entry : map.entrySet()) {
            Object key = entry.getKey();
            Object value = entry.getValue();
            writer.name(String.valueOf(key));
            write(value, writer);
        }
        writer.endObject();
    }
}

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