当用户在设备上没有电子邮件帐户时，在 IOS 上共享文档时出现问题

Posted 2023-02-23

【中文标题】当用户在设备上没有电子邮件帐户时，在 IOS 上共享文档时出现问题

【英文标题】：Problems sharing document on IOS when the user doesn't have an email account on the device

【发布时间】：2017-06-16 10:50:07

【问题描述】：

当我尝试使用 UIActivityViewController 通过电子邮件共享 pdf 文档时遇到问题。

当用户配置他的电子邮件共享工作正常时，它显示为附件的文档，但是当用户之前没有配置电子邮件帐户时，它会提示用户选择电子邮件提供商，如果我配置电子邮件帐户新电子邮件出现，但没有附加文件。如果我用配置的电子邮件重试，效果很好。

我在 ios 9 和 10 上对其进行了测试，它给了我同样的问题。

这是我在 Objective C 上的代码：

NSString *file = [NSString stringWithFormat:@"file://%@", items[0][@"source"]];

NSURLRequest *urlRequestToLoad = [NSURLRequest requestWithURL:[NSURL                                                                                                                                     URLWithString:file] cachePolicy:NSURLRequestUseProtocolCachePolicy 
timeoutInterval:60.0];

NSArray *sharingItems = @[items[0][@"filename"], [urlRequestToLoad URL]];

UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:sharingItems applicationActivities:nil];

[activityController setValue:@"Your email Subject" forKey:@"subject"];
[self.viewController presentViewController:activityController animated:YES completion:nil];

知道我做错了什么吗？

【问题讨论】：

我认为你所做的一切都很好，它只是这样工作。

您要共享本地文档吗？

本地文档。

【参考方案1】：

是！简单的解决方案:) 下载并附加文件。如果您之前在 webview 中加载 PDF，请在下面找到评论。

    -(void)print:(NSString*)subject withFileName:(NSString*)fileName webFileURL:(NSURL*)webURL

        if ([UIActivityViewController class]) 

            if (subject) 

                NSString *documentDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
                NSString *title = [fileName stringByReplacingOccurrencesOfString:@" " withString:@"_"];;
                title = [NSString stringWithFormat:@"%@.pdf",title];

                NSString * filePath = [documentDir stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@",title];

                // Showing spinner
                NSURLRequest *request = [NSURLRequest requestWithURL:webURL];
                [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) 
                    // Close the spinner
                    if (error) 
                        NSLog(@"Download Error:%@",error.description);
                    
                    if (data) 
                        [data writeToFile:filePath atomically:YES];
                        dispatch_async(dispatch_get_main_queue(), ^ 

                            /* Set this available field on the activity controller */
                            NSMutableArray *items = [NSMutableArray array];

                            if (data) 
                                [items addObject:[NSURL fileURLWithPath:filePath]];
                             

                            // Print webView
                            // 
                            //     [items addObject:[self.webViewInstance viewPrintFormatter]];
                            // 

                            if (webURL) 
                                [items addObject:[NSString stringWithFormat:@"%@ - %@",subject, [webURL absoluteString]];
                            

                            UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:items applicationActivities:nil];

                            [activityViewController setValue:subject forKey:@"subject"]; // Set the mail subject.

                             // If you are not handle it. It will crash in iPad 
                            if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) 
                                activityViewController.modalPresentationStyle = UIModalPresentationPopover;
                                UIPopoverPresentationController *popPC = activityViewController.popoverPresentationController;
                                popPC.sourceView = self.view;
                                popPC.sourceRect = kSharePopArea;
                                popPC.permittedArrowDirections = UIPopoverArrowDirectionAny;
                            
                            [self presentViewController:activityViewController animated:YES completion:nil];
                        );
                    
                ];
            
        
    

        NSString *content = @"write text here";

        NSError* lError;
        NSMutableArray *items = [NSMutableArray array];
        if ([NSData dataWithContentsOfURL:fileUrl options:NSDataReadingMappedAlways error:&lError]) // Local file
        
            [items addObject:fileUrl];
        

        if(content) 
             [items addObject:content];
        

         if(imagename && [UIImage imageNamed:@"imagename"]) 
             [items addObject:[UIImage imageNamed:@"imagename"]];
        


        UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:items applicationActivities:nil];

        // Add email subject.
        [activityViewController setValue:@"Your email Subject" forKey:@"subject"];


        // If you are not handle it. It will crash in iPad 
        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) 
            activityViewController.modalPresentationStyle = UIModalPresentationPopover;
            UIPopoverPresentationController *popPC = activityViewController.popoverPresentationController;
            popPC.sourceView = self.view;
            popPC.sourceRect = kSharePopArea;
            popPC.permittedArrowDirections = UIPopoverArrowDirectionAny;
        


        [self presentViewController:activityViewController animated:YES completion:nil];

【讨论】：

是本地文档，不需要下载。