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refactor(programs): 模板保存目录改为下载目录

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- getDownloadsDirectory() 优先，失败时回退到应用文档目录
- 更新 dartdoc 说明
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Developer
2026-06-04 15:35:52 +08:00
parent d91791edaf
commit 16fbb7d54b
1 changed files with 4 additions and 2 deletions
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6
lib/features/programs/services/excel_template_service.dart
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@@ -18,11 +18,13 @@ class ExcelTemplateService {
static const String sheetPrograms = 'Programs'; static const String sheetPrograms = 'Programs';
static const String sheetSteps = 'Steps'; static const String sheetSteps = 'Steps';
/// 生成模板并保存到应用文档目录，返回文件对象 /// 生成模板并保存到下载目录，返回文件对象
///
/// 优先使用系统下载目录；不支持时回退到应用文档目录。
Future<File> generateTemplate() async { Future<File> generateTemplate() async {
final excel = Excel.createExcel(); final excel = Excel.createExcel();
final bytes = _buildTemplateBytes(excel); final bytes = _buildTemplateBytes(excel);
final dir = await getApplicationDocumentsDirectory(); final dir = await getDownloadsDirectory() ?? await getApplicationDocumentsDirectory();
final file = File('${dir.path}/program_template.xlsx'); final file = File('${dir.path}/program_template.xlsx');
await file.writeAsBytes(bytes, flush: true); await file.writeAsBytes(bytes, flush: true);
return file; return file;