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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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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 net.micode.notes.tool;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.drawable.Drawable;
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import android.net.Uri;
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import android.text.Spannable;
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import android.text.SpannableStringBuilder;
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import android.text.style.ImageSpan;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 图片Span工具类，用于处理图片在Spannable中的序列化和反序列化
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*/
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public class ImageSpanUtils {
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/**
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* 将Spannable中的图片信息序列化为JSON字符串
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*
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* @param spannable 包含图片信息的Spannable对象
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* @param content 原始文本内容
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* @return 图片信息的JSON字符串表示
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*/
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public static String serializeImageInfo(Spannable spannable, String content) {
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JSONArray jsonArray = new JSONArray();
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// 获取所有图片Span
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ImageSpan[] imageSpans = spannable.getSpans(0, spannable.length(), ImageSpan.class);
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for (ImageSpan span : imageSpans) {
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JSONObject spanObj = new JSONObject();
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try {
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int start = spannable.getSpanStart(span);
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int end = spannable.getSpanEnd(span);
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// 获取图片URI（如果有的话）
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Drawable drawable = span.getDrawable();
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if (drawable != null) {
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// 这里我们假设图片信息已经在其他地方存储，只需记录位置和路径
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// 在实际实现中，你可能需要将图片保存到特定位置并记录路径
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spanObj.put("type", "image");
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spanObj.put("start", start);
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spanObj.put("end", end);
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// 注意：ImageSpan通常不直接存储URI，需要额外的机制来跟踪图片路径
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// 这里仅为示例，实际实现需要根据具体情况调整
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}
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} catch (JSONException e) {
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e.printStackTrace();
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}
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}
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return jsonArray.toString();
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}
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/**
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* 将JSON格式的图片信息反序列化并应用到文本上
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*
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* @param context 上下文
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* @param text 原始文本
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* @param imageJson 序列化的图片信息JSON字符串
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* @return 包含图片信息的SpannableStringBuilder
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*/
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public static SpannableStringBuilder deserializeImageInfo(Context context, String text, String imageJson) {
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SpannableStringBuilder spannable = new SpannableStringBuilder(text);
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if (imageJson == null || imageJson.isEmpty()) {
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return spannable;
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}
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try {
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// 这里需要根据实际的图片存储机制来实现
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// 因为图片通常需要特殊处理，这里暂时返回原始文本
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// 实际实现需要考虑如何存储和检索图片
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return spannable;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return spannable;
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}
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} |
