App crashed using MFMailComposeViewController - ios7

Question

I get this crash on iOS 7,
Assertion failed: (result == KERN_SUCCESS), function + [XPCMachSendRight wrapSendRight:], file /SourceCache/XPCObjects/XPCObjects-46/XPCMachSendRight.m, line27.
Steps which lead to this crash are,
Opening MFMailComposeViewController
Press home button
App crashed.
Here is crash report,
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x393bf1fc 0x393ac000 + 78332
1 libsystem_pthread.dylib 0x39426a4f 0x39423000 + 14927
2 libsystem_c.dylib 0x39370083 0x39326000 + 303235
3 libsystem_c.dylib 0x39370035 0x39326000 + 303157
4 libsystem_c.dylib 0x3934fc67 0x39326000 + 171111
5 XPCObjects 0x375a7905 0x375a2000 + 22789
6 UIKit 0x317b41f9 0x3128d000 + 5403129
7 UIKit 0x31529d45 0x3128d000 + 2739525
8 QuartzCore 0x30f54af9 0x30f13000 + 269049
9 QuartzCore 0x30f1b077 0x30f13000 + 32887
10 QuartzCore 0x30f1ae1b 0x30f13000 + 32283
11 UIKit 0x31318deb 0x3128d000 + 572907
12 UIKit 0x31318d53 0x3128d000 + 572755
13 CoreFoundation 0x2eaddf6f 0x2ea3e000 + 655215
14 CoreFoundation 0x2eadb8fb 0x2ea3e000 + 645371
15 CoreFoundation 0x2eadbbb5 0x2ea3e000 + 646069
16 CoreFoundation 0x2ea4653d 0x2ea3e000 + 34109
17 CoreFoundation 0x2ea4631f 0x2ea3e000 + 33567
18 GraphicsServices 0x337762e7 0x3376f000 + 29415
19 UIKit 0x312fd1e1 0x3128d000 + 459233
20 MYAPP 0x0002d5c9 main (main.mm:18)
21 MYAPP 0x0002d524 start + 36
I found similar problem mentioned here: app get crashed while navigating to RootViewController from Message popup
Crash occurs rarely. I don't know what [XPCMachSendRight wrapSendRight:] this is and how to prevent it from crashing my app?

Answer 1

Before using MFMailComposeViewController class, you must always check to see if the current device is configured to send email at all using the canSendMail method. If the user’s device is not set up for the delivery of email, you can notify the user or simply disable the email dispatch features in your application. You should not attempt to use this interface if the canSendMail method returns NO.
Use this code....
if ([MFMailComposeViewController canSendMail])
{
MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
mailer.mailComposeDelegate = self;
[mailer setSubject:#"A Message from Bloomingkids"];
NSArray *toRecipients = [NSArray arrayWithObjects:#"support#bloomingkids.com", nil];
[mailer setToRecipients:toRecipients];
UIImage *myImage = [UIImage imageNamed:#"bloomingKidsLogo.png"];
NSData *imageData = UIImagePNGRepresentation(myImage);
[mailer addAttachmentData:imageData mimeType:#"image/png" fileName:#"Images"];
NSString *emailBody = #"Have you seen the Bloomingkids web site?";
[mailer setMessageBody:emailBody isHTML:NO];
[self presentViewController:mailer animated:YES completion:nil];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Failure"
message:#"Your device doesn't support the composer sheet"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles: nil];
[alert show];
}
Add any email account in your device first means setup an email account...