在iOS 5中的Objective-C中未將pdf添加到電子郵件中

Question

我正在嘗試將電子郵件添加為郵件的附件。 我是這樣的

-(IBAction)mailPDF:(id)sender{
    MFMailComposeViewController* controller = [[MFMailComposeViewController alloc] init];
    controller.mailComposeDelegate = self;
    NSLog(@"myData is %@",myData);
    [controller setSubject:@"Geselecteerde favorieten van Genk on Stage"];
    [controller setMessageBody:@"<p>Hallo muziekliefhebber <br /> In bijlage vind je jouw favorieten. Volg en praat met ons mee op facebook.com/genkonstage of @genkonstage!<br /> Veel plezier op Genk on stage! </p>" isHTML:YES];
    if (controller){
        [self presentModalViewController:controller animated:YES];
        [controller addAttachmentData:myData mimeType:@"application/pdf" fileName:@"favorite.pdf"];
    }else{
        NSLog(@"nothing to show");
    }
}

這就是我設置myData的方式

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"favorite.pdf"];
 myData = [NSData dataWithContentsOfFile: filePath];

當我查看日志myData （這是我的pdf）時，它不是空的。 同樣，當我在查找程序中瀏覽到simulator文件文件夾時，我看到我有一個PDF。

有人可以告訴我為什么我的PDF文件沒有添加到我的郵件中嗎？

謝謝！

編輯似乎上述代碼僅在IOS6中有效。 現在的問題是。 為什么它在IOS 5中不起作用

Answer 1

首先要顯示視圖控制器，然后再附加文件。 更改操作順序：

也就是說，在您的代碼行中：

[self presentModalViewController:controller animated:YES];

[controller addAttachmentData:myData mimeType:@"application/pdf" fileName:@"favorite.pdf"];

將它們修改為：

[controller addAttachmentData:myData mimeType:@"application/pdf" fileName:@"favorite.pdf"];

[self presentModalViewController:controller animated:YES];

希望它能解決問題:)

Answer 2

嘗試這個，

-(IBAction)mailPDF:(id)sender{
  MFMailComposeViewController* controller = [[MFMailComposeViewController alloc] init];
  controller.mailComposeDelegate = self;
  NSLog(@"myData is %@",myData);
  [controller setSubject:@"Geselecteerde favorieten van Genk on Stage"];
  [controller setMessageBody:@"<p>Hallo muziekliefhebber <br /> In bijlage vind je jouw favorieten. Volg en praat met ons mee op facebook.com/genkonstage of @genkonstage!<br /> Veel plezier op Genk on stage! </p>" isHTML:YES];

  if (controller)
     {
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
     NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"favorite.pdf"];
     NSData *myData = [NSData dataWithContentsOfFile:filePath];
     [controller addAttachmentData:myData mimeType:@"application/pdf" fileName:@"favorite.pdf"];
     [self presentModalViewController:controller animated:YES];
    }
 else{
    NSLog(@"nothing to show");
    }
}