feat(activity): 添加 Zip 文件下载解压工具和趣味页面
- 新增 ZipDownloadUtils：支持大文件下载、进度回调、断点续传 - 新增 ZipExtractUtils：支持 Zip 文件解压、进度回调、自动创建目录 - 新增 ModelResourceManager：高层资源管理器，协调下载和解压流程 - 新增 FunActivity：趣味测试页面，包含 3 个按钮 - 按钮 1：下载 Zip 文件 - 按钮 2：解压 Zip 文件 - 按钮 3：读取 JSON 并保存到 ObjectBox 数据库 - 新增 activity_fun.xml：趣味页面布局 - 新增 ZipToolsUsageExample：工具使用示例文档 - 改进 ToastUtils：改为 Context 扩展方法 (toast/toastLong) - 暂时注释 HomeActivity 中 tvTime 的点击事件
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package com.sw.inbound.utils
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import android.content.Context
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import timber.log.Timber
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import java.io.File
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/**
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* 模型资源管理器
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* 负责从接口下载模型资源包（Zip），并解压到应用缓存目录
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* 替代原有的 assets 中写死的 data 文件夹和 .pt 文件
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*/
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object ModelResourceManager {
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/**
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* 资源下载和解压的回调接口
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*/
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interface ResourceCallback {
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/**
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* 下载进度回调
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* @param progress 进度百分比 (0-100)
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* @param message 进度信息
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*/
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fun onDownloadProgress(progress: Int, message: String)
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/**
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* 解压进度回调
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* @param progress 进度百分比 (0-100)
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* @param message 进度信息
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*/
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fun onExtractProgress(progress: Int, message: String)
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/**
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* 完成回调
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* @param resourceDir 资源所在目录
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*/
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fun onSuccess(resourceDir: File)
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/**
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* 失败回调
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* @param errorMessage 错误信息
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*/
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fun onFailure(errorMessage: String)
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}
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/**
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* 下载并解压模型资源
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* @param context 应用上下文
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* @param downloadUrl 资源包下载链接
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* @param callback 进度和结果回调
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*/
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fun downloadAndExtractResources(
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context: Context,
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downloadUrl: String,
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callback: ResourceCallback
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) {
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try {
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// 获取缓存目录
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val cacheDir = context.cacheDir
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val resourcesDir = File(cacheDir, "model_resources")
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val zipFile = File(cacheDir, "model_resources.zip")
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Timber.d("资源缓存目录: ${resourcesDir.absolutePath}")
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Timber.d("Zip 文件路径: ${zipFile.absolutePath}")
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// Step 1: 下载 Zip 文件
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Timber.d("开始下载资源包: $downloadUrl")
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ZipDownloadUtils.downloadZip(
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downloadUrl = downloadUrl,
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targetFile = zipFile,
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listener = object : ZipDownloadUtils.DownloadProgressListener {
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override fun onProgress(currentSize: Long, totalSize: Long, progress: Int) {
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val message = "下载中... ${formatFileSize(currentSize)}/${formatFileSize(totalSize)}"
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callback.onDownloadProgress(progress, message)
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}
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override fun onSuccess(file: File) {
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Timber.d("资源包下载完成")
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callback.onDownloadProgress(100, "下载完成")
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// Step 2: 解压 Zip 文件
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extractResources(resourcesDir, zipFile, callback)
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}
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override fun onFailure(exception: Exception) {
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val errorMsg = "资源包下载失败: ${exception.message}"
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Timber.e(exception, errorMsg)
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callback.onFailure(errorMsg)
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}
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}
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)
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} catch (e: Exception) {
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val errorMsg = "资源下载和解压过程异常: ${e.message}"
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Timber.e(e, errorMsg)
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callback.onFailure(errorMsg)
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}
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}
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/**
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* 解压资源包
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*/
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private fun extractResources(
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resourcesDir: File,
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zipFile: File,
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callback: ResourceCallback
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) {
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try {
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Timber.d("开始解压资源包")
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ZipExtractUtils.extractZip(
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zipFile = zipFile,
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targetDir = resourcesDir,
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listener = object : ZipExtractUtils.ExtractProgressListener {
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override fun onProgress(
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currentFile: String,
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currentIndex: Int,
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totalFiles: Int,
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progress: Int
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) {
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val message = "解压中... ($currentIndex/$totalFiles) $currentFile"
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callback.onExtractProgress(progress, message)
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}
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override fun onSuccess(targetDir: File) {
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Timber.d("资源包解压完成: ${targetDir.absolutePath}")
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callback.onExtractProgress(100, "解压完成")
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// 清理 Zip 文件
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zipFile.delete()
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Timber.d("临时 Zip 文件已删除")
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callback.onSuccess(targetDir)
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}
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override fun onFailure(exception: Exception) {
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val errorMsg = "资源包解压失败: ${exception.message}"
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Timber.e(exception, errorMsg)
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callback.onFailure(errorMsg)
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}
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}
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)
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} catch (e: Exception) {
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val errorMsg = "解压过程异常: ${e.message}"
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Timber.e(e, errorMsg)
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callback.onFailure(errorMsg)
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}
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}
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/**
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* 获取已缓存的资源目录
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* @param context 应用上下文
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* @return 资源目录，如果不存在则返回 null
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*/
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fun getCachedResourcesDir(context: Context): File? {
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val resourcesDir = File(context.cacheDir, "model_resources")
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return if (resourcesDir.exists() && resourcesDir.isDirectory) {
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resourcesDir
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} else {
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null
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}
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}
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/**
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* 清理缓存的资源
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* @param context 应用上下文
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* @return 是否清理成功
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*/
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fun clearCachedResources(context: Context): Boolean {
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return try {
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val resourcesDir = File(context.cacheDir, "model_resources")
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val zipFile = File(context.cacheDir, "model_resources.zip")
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val dirDeleted = resourcesDir.deleteRecursively()
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val zipDeleted = zipFile.delete()
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Timber.d("清理缓存资源: 目录=$dirDeleted, Zip=$zipDeleted")
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dirDeleted || zipDeleted
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} catch (e: Exception) {
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Timber.e(e, "清理缓存资源失败")
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false
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}
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}
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/**
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* 格式化文件大小为可读字符串
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*/
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private fun formatFileSize(bytes: Long): String {
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return when {
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bytes <= 0 -> "0 B"
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bytes < 1024 -> "$bytes B"
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bytes < 1024 * 1024 -> String.format("%.2f KB", bytes / 1024.0)
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bytes < 1024 * 1024 * 1024 -> String.format("%.2f MB", bytes / (1024.0 * 1024))
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else -> String.format("%.2f GB", bytes / (1024.0 * 1024 * 1024))
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}
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}
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}
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