Two ways to send email to iOS

The iOS system framework provides two ways to send email: OpenURL and Mfmailcomposeviewcontroller. With these two methods, we can easily add to the application such as user feedback, such as the need to send mail functions.

1.openURL using OpenURL to invoke the system mailbox client is our primary means of implementing the E-mail functionality below IOS3.0. We can specify the contents of the message by setting the relevant parameters in the URL, but it is obvious that the process will cause the program to quit temporarily. Here is a small example of using OpenURL to send a message:

2. #pragma mark-Send mail using System mail client
4. -(void) Launchmailapp
6. {
8. nsmutablestring *mailurl = [[[Nsmutablestring alloc]init]autorelease];
10. //Add Recipients
12. Nsarray *torecipients = [Nsarray arraywithobject: @"[email protected]"];
14. [Mailurl appendformat:@"mailto:%@", [torecipients componentsjoinedbystring:@","]];
16. //Add cc
18. Nsarray *ccrecipients = [Nsarray arraywithobjects:@"[email protected]", @"[email protected]", nil];
20. [Mailurl appendformat:@"? cc=%@", [ccrecipients componentsjoinedbystring:@","]];
22. //Add encryption to send
24. Nsarray *bccrecipients = [Nsarray arraywithobjects:@"[email protected]", nil];
26. [Mailurl appendformat:@"&bcc=%@", [bccrecipients componentsjoinedbystring:@","]];
28. //Add Theme
30. [Mailurl appendstring:@"&subject=my Email"];
32. //Add message content
34. [Mailurl appendstring:@"&body=<b>email</b> body!"];
36. nsstring* email = [Mailurl stringbyaddingpercentescapesusingencoding:nsutf8stringencoding];
38. [[UIApplication Sharedapplication] OpenURL: [Nsurl Urlwithstring:email]];
40. }

2.MFMailComposeViewControllerMFMailComposeViewController is a new interface in IOS3.0, which is in Messageui.framework. By calling Mfmailcomposeviewcontroller, you can integrate the mail-sending window into our app and send mail without exiting the program. How to use Mfmailcomposeviewcontroller:

• 1. Introduction of messageui.framework in the project;
• 2. Import the MFMailComposeViewController.h header file into the file used;
• 3. Implement Mfmailcomposeviewcontrollerdelegate, handle mail sending events;
• 4. Use the "+ (BOOL) Cansendmail" method in Mfmailcomposeviewcontroller to check if the user has set up a mail account before calling out the mail sending window;
• 5. Initialize the Mfmailcomposeviewcontroller, construct the mail body

2. //
4. ViewController.h
6. Maildemo
8. //
10. Created by luoyl on 12-4-4.
12. Copyright (c) 2012 Http://luoyl.info. All rights reserved.
14. //
18. #import <UIKit/UIKit.h>
20. #import <MessageUI/MFMailComposeViewController.h>
24. @interface viewcontroller:uiviewcontroller<mfmailcomposeviewcontrollerdelegate>
28. @end

2. #pragma mark-Send messages within the app
4. Activate Mail feature
6. -(void) Sendmailinapp
8. {
10. Class Mailclass = (nsclassfromstring (@"Mfmailcomposeviewcontroller"));
12. if (!mailclass) {
14. [Self alertwithmessage:@] The current system version does not support in-app send mail functionality, you can use the Mailto method instead of "];
16. return;
18. }
20. if (![ Mailclass Cansendmail]) {
22. [Self alertwithmessage:@"user does not have a mail account set up"];
24. return;
26. }
28. [Self displaymailpicker];
30. }
34. Bring up the mail send window
36. -(void) Displaymailpicker
38. {
40. Mfmailcomposeviewcontroller *mailpicker = [[Mfmailcomposeviewcontroller alloc] init];
42. Mailpicker.mailcomposedelegate = self;
46. //Set Theme
48. [Mailpicker setsubject: @"email theme"];
50. //Add Recipients
52. Nsarray *torecipients = [Nsarray arraywithobject: @"[email protected]"];
54. [Mailpicker settorecipients:torecipients];
56. //Add cc
58. Nsarray *ccrecipients = [Nsarray arraywithobjects:@"[email protected]", @"[email protected]", nil];
60. [Mailpicker setccrecipients:ccrecipients];
62. //Add encryption to send
64. Nsarray *bccrecipients = [Nsarray arraywithobjects:@"[email protected]", nil];
66. [Mailpicker setbccrecipients:bccrecipients];
70. //Add a picture
72. UIImage *addpic = [UIImage imagenamed: @"[email protected]"];
74. NSData *imagedata = uiimagepngrepresentation (addpic); //PNG
76. //About mimetype:http://www.iana.org/assignments/media-types/index.html
78. [Mailpicker addattachmentdata:imagedata MimeType: @ "" FileName: @"Icon.png"];
82. //Add a PDF attachment
84. NSString *file = [self fullbundlepathfromrelativepath:@"high quality C + + Programming Guide. pdf"];
86. NSData *pdf = [NSData datawithcontentsoffile:file];
88. [Mailpicker addattachmentdata:pdf MimeType: @ "" FileName: @"High quality C + + Programming Guide. pdf"];
92. NSString *emailbody = @"<font color= ' red ' >eMail</font> text";
94. [Mailpicker setmessagebody:emailbody Ishtml:yes];
96. [Self presentmodalviewcontroller:mailpicker animated:yes];
98. [Mailpicker release];
100. }
104. #pragma mark-Achieve mfmailcomposeviewcontrollerdelegate
106. -(void) Mailcomposecontroller: (Mfmailcomposeviewcontroller *) controller didfinishwithresult: ( Mfmailcomposeresult) Result Error: (NSERROR *) Error
108. {
110. //close mail sending window
112. [Self dismissmodalviewcontrolleranimated:yes];
114. NSString *msg;
116. switch (result) {
118. Case mfmailcomposeresultcancelled:
120. msg = @"User cancels edit mail";
122. Break ;
124. Case mfmailcomposeresultsaved:
126. msg = @"User successfully saved mail";
128. Break ;
130. Case Mfmailcomposeresultsent:
132. msg = @"The user clicks Send, puts the message in the queue, has not been sent";
134. Break ;
136. Case mfmailcomposeresultfailed:
138. msg = @"user attempted to save or send message failed";
140. Break ;
142. Default:
144. msg = @"";
146. Break ;
148. }
150. [Self alertwithmessage:msg];
152. }

Two ways to send email to iOS