ios - UIActivityViewController - 保留从 URL 读取的附加文件的文件名

Question

iOS6 UIActivityViewController 是否有与此等效的代码（下面的代码）？问题是，我可以通过 url 共享数据并保留文件名吗？到目前为止，我能弄清楚如何做到这一点的唯一方法是将 PDF 转换为 NSData 并将数据添加为 activityItem。工作正常，但我丢失了附件 pdf 的名称。

[composer addAttachmentData:pdfData mimeType:@"application/pdf" fileName:@"myPDF.pdf"];

Answer 1

是的，我认为这是可能的，试试这个

NSString *str = [[NSBundle mainBundle] pathForResource:@"AppDistributionGuide" ofType:@"pdf"]; 
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[@"Test", [NSURL fileURLWithPath:str]] applicationActivities:nil];

Answer 2

请参考以下方法来实现。保留从 URL 读取的附加文件的文件名：

dispatch_async(dispatch_get_main_queue(), ^ {
    NSData *fileData;
    NSString *documentDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    NSString *filePath = [documentDir stringByAppendingPathComponent:@"filename.pdf"];

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.test.com/filename.pdf"]];
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
        if (error) {
            NSLog(@"Download Error:%@",error.description);
        }
        if (data) {
            fileData = data;
            [data writeToFile:filePath atomically:YES];
            NSLog(@"File is saved to %@",filePath);
        }
    }];
    if(fileData && filePath) {
            UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[[NSURL fileURLWithPath:filePath]] applicationActivities:nil];
            [self presentViewController:activityViewController animated:YES completion:nil];
    }
});