38 lines
1.2 KiB
Dart
38 lines
1.2 KiB
Dart
import 'dart:io';
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import 'package:flutter/services.dart';
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import 'package:path_provider/path_provider.dart';
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class SCFileHelper{
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// 将资源文件拷贝到应用文档目录
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static Future<String> copyAssetToLocal(String assetPath) async {
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try {
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// 获取应用文档目录
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final Directory appDocDir = await getApplicationDocumentsDirectory();
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final String localFilePath = '${appDocDir.path}/${assetPath.split('/').last}';
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// 检查文件是否已存在
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if (await File(localFilePath).exists()) {
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print('文件已存在，直接使用: $localFilePath');
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return localFilePath;
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}
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// 从Assets加载字节数据
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final ByteData data = await rootBundle.load(assetPath);
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final List<int> bytes = data.buffer.asUint8List();
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// 将字节数据写入本地文件
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final File localFile = File(localFilePath);
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await localFile.writeAsBytes(bytes);
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print('文件拷贝成功: $localFilePath');
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return localFilePath;
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} catch (e) {
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print('拷贝文件时发生错误: $e');
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rethrow; // 重新抛出异常以便上层处理
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} finally {
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}
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}
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} |