无法使用UIDocumentPickerViewController选择多个文件

Question

我正在尝试使用文件应用程序一次导入/选择多个文件UIDocumentPickerViewController.

尝试设置,allowsMultipleSelection = true但在呈现选择器时仍然没有" 选择 "选项.

代码段:

UIDocumentPickerViewController *dvc = [[UIDocumentPickerViewController alloc]initWithDocumentTypes:arrContents inMode:UIDocumentPickerModeImport];
dvc.delegate = self;
dvc.allowsMultipleSelection = true;
[self presentViewController:dvc animated:true completion:nil];

截图:

Answer 1

这是Apple需要修复的错误.您可以使用此解决方法.如果设置animated:为YES,则仅在您第一次显示文档选择器时才会起作用.

Objective-C的:

[self presentViewController:dvc animated:NO completion:^{
    if (@available(iOS 11.0, *)) {
        dvc.allowsMultipleSelection = YES;
    }
}];

斯威夫特4:

self.present(dvc, animated: false) {
    if #available(iOS 11.0, *) {
        dvc.allowsMultipleSelection = true;
    }
}