从视图生成PDF以进行电子邮件发送

时间:2011-02-07 08:48:43

标签: objective-c pdf-generation

我是Objective C的新手,所以请帮帮我。

我有一个包含多个标签和文本视图的视图。我正在尝试为该页面/视图生成PDF文件并附加到电子邮件中。

首先,我尝试了这种方法,似乎文件未创建或未附加到电子邮件中。这是我的代码:

NSMutableData *pdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData(pdfData, self.view.bounds, nil);
UIGraphicsBeginPDFPage();

[self.view drawRect:self.view.bounds];

UIGraphicsEndPDFContext();

MFMailComposeViewController *mailComposer = [[[MFMailComposeViewController alloc] init] autorelease];
mailComposer.mailComposeDelegate = self;



[pdfData writeToFile:file atomically:YES];



[mailComposer addAttachmentData:pdfData mimeType:@"application/pdf" fileName:file];

[self presentModalViewController:mailComposer animated:YES];

由于这不起作用,我首先单独创建PDF,然后将其附加到电子邮件中,尝试了不同的方法。然后我看到PDF文件是在该目录下创建的,但它是空的!!!

以下是我修改后的代码:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *file = [documentsDirectory stringByAppendingFormat:@"/tempFile.pdf"];

UIGraphicsBeginPDFContextToFile(file, self.view.bounds, nil);
UIGraphicsBeginPDFPage();

[self.view drawRect:self.view.bounds];

UIGraphicsEndPDFContext();

MFMailComposeViewController *mailComposer = [[[MFMailComposeViewController alloc] init] autorelease];
mailComposer.mailComposeDelegate = self;



[pdfData writeToFile:file atomically:YES];



[mailComposer addAttachmentData:pdfData mimeType:@"application/pdf" fileName:file];


[self presentModalViewController:mailComposer animated:YES];
  • 您能否帮助我从视图中成功创建PDF,然后将其附加到电子邮件中?

我尝试了几种方法,但无法弄清楚我做错了什么。非常感谢!!!

1 个答案:

答案 0 :(得分:3)

NSMutableData *pdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData(pdfData, self.view.bounds, nil);
UIGraphicsBeginPDFPage();

[self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; 

UIGraphicsEndPDFContext();

MFMailComposeViewController *mailComposer = [[[MFMailComposeViewController alloc] init] autorelease];

mailComposer.mailComposeDelegate = self;

[mailComposer addAttachmentData:pdfData mimeType:@"pdf" fileName:@"file.pdf"];

[self presentModalViewController:mailComposer animated:YES];

注意: 不知道draw rect是否适用于views。对我来说它不起作用! 无需将数据写入文件。您可以在邮件组成

时直接执行此操作
[mailComposer addAttachmentData:pdfData mimeType:@"pdf" fileName:@"file.pdf"];

试试这个.mime类型只需要字符串pdf。还包括文件名file.pdf的扩展名。

快乐的编码:)