json String To List - Android File Input Output

Android examples for File Input Output:Json String

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Description

json String To List

Demo Code

/*//from   ww w  .j  a v  a  2s .c  o m
 * Copyright (C) 2013 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.
 */
import android.util.JsonReader;
import android.util.JsonWriter;
import android.util.Log;
import java.io.Closeable;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Main{
    private static final String TAG = JsonUtils.class.getSimpleName();
    private static final String INTEGER_CLASS_NAME = Integer.class
            .getSimpleName();
    private static final String STRING_CLASS_NAME = String.class
            .getSimpleName();
    public static List<Object> jsonStrToList(final String s) {
        final ArrayList<Object> list = new ArrayList<>();
        final JsonReader reader = new JsonReader(new StringReader(s));
        try {
            reader.beginArray();
            while (reader.hasNext()) {
                reader.beginObject();
                while (reader.hasNext()) {
                    final String name = reader.nextName();
                    if (name.equals(INTEGER_CLASS_NAME)) {
                        list.add(reader.nextInt());
                    } else if (name.equals(STRING_CLASS_NAME)) {
                        list.add(reader.nextString());
                    } else {
                        Log.w(TAG, "Invalid name: " + name);
                        reader.skipValue();
                    }
                }
                reader.endObject();
            }
            reader.endArray();
            return list;
        } catch (final IOException e) {
        } finally {
            close(reader);
        }
        return Collections.<Object> emptyList();
    }
    private static void close(final Closeable closeable) {
        try {
            if (closeable != null) {
                closeable.close();
            }
        } catch (final IOException e) {
            // Ignore
        }
    }
}

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