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IOS开发中发送Email的两种方法

2013-09-29 15:57 519 查看
1、使用openURL来实现发邮件的功能:

NSString *url = [NSStringstringWithString:

@"mailto:foo@example.com?cc=bar@example.com&subject=Greetings from Cupertino!& body=Wish youwere here!"];

[[UIApplicationsharedApplication]

openURL: [NSURLURLWithString: url]];

缺点很明显,这样的过程会导致程序暂时退出,即使在iOS4.x支持多任务的情况下,这样的过程还是会让人觉得不是很方便。

2、使用MFMailComposeViewController来实现发邮件的功能,它在MessageUI.framework中,你需要在项目中加入该框架,并在使用的文件中导入MFMailComposeViewController.h头文件。

#import ;

MFMailComposeViewController*

controller =[[MFMailComposeViewController alloc] init];

controller.mailComposeDelegate = self;

[controller setSubject:@"MySubject"];

[controllersetMessageBody:@"Hello there." isHTML:NO];

[selfpresentModalViewController:controller animated:YES];

[controllerrelease];

使用该方法实现发送Email是最常规的方法,该方法有相应的MFMailComposeViewControllerDelegate事件:

-(void)mailComposeController:(MFMailComposeViewController*)controller

didFinishWithResult:(MFMailComposeResult)result

error:(NSError*)error;

{

if (result ==MFMailComposeResultSent) {

NSLog(@"It's away!");

}

[selfdismissModalViewControllerAnimated:YES];

}

有一些相关的数据结构的定义在头文件中都有具体的描述:

enum MFMailComposeResult{

MFMailComposeResultCancelled,//用户取消编辑邮件

MFMailComposeResultSaved,//用户成功保存邮件

MFMailComposeResultSent,//用户点击发送,将邮件放到队列中

MFMailComposeResultFailed//用户试图保存或者发送邮件失败

};

typedef enumMFMailComposeResult MFMailComposeResult;

// iOS3.0以上有效

在头文件中MFMailComposeViewController的部分方法顺便提及:

+ (BOOL)canSendMail__OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);

//如果用户没有设置邮件账户,则会返回NO,你可以用根据返回值来决定是 使用MFMailComposeViewController 还是mailto://的传统方法,也或者, 你可以选择上文中提到的skpsmtpmessage来实现发送Email的功能。

-(void)addAttachmentData:(NSData*)attachment

mimeType:(NSString*)mimeType fileName:(NSString *)filename;

//NSData类型的attachment自然不必多说,关于mimeType需要一点说明, 官方文档里给出了一个链接http://www.iana.org/assignments/media-types/, 这里列出的所有的类型都应该支持。关于mimeType的用处,更多需要依靠搜索引擎了 =]

第二种方法的劣势也很明显,iOS系统替我们提供了一个mail中的UI,而我们却完全无法对齐进行订制,这会让那些定制化成自己风格的App望而却步,因为这样使用的话无疑太突兀了。

3、我们可以根据自己的UI设计需求来定制相应的视图以适应整体的设计。可以使用比较有名的开源SMTP协议来实现。

在SKPSMTPMessage类中,并没有对视图进行任何的要求,它提供的都是数据层级的处理,你之需要定义好相应的发送要求就可以实现邮件发送了。至于是以什么样的方式获取这些信息,就可以根据软件的需求来确定交互方式和视图样式了。

SKPSMTPMessage *testMsg =[[SKPSMTPMessage alloc] init];

testMsg.fromEmail = @"test@gmail.com";

testMsg.toEmail =@"to@gmail.com";

testMsg.relayHost = @"smtp.gmail.com";

testMsg.requiresAuth = YES;

testMsg.login = @"test@gmail.com";

testMsg.pass = @"test";

testMsg.subject = [NSStringstringWithCString:"测试" encoding:NSUTF8StringEncoding];

testMsg.bccEmail = @"bcc@gmail.com";

testMsg.wantsSecure = YES; // smtp.gmail.comdoesn't work without TLS!

// Only do this for self-signed certs!

// testMsg.validateSSLChain = NO;

testMsg.delegate = self;

NSDictionary *plainPart =[NSDictionary

dictionaryWithObjectsAndKeys:@"text/plain",kSKPSMTPPartContentTypeKey,

[NSStringstringWithCString:"测试正文" encoding:NSUTF8StringEncoding],

kSKPSMTPPartMessageKey,@"8bit",kSKPSMTPPartContentTransferEncodingKey,nil];

NSString *vcfPath =[[NSBundle mainBundle] pathForResource:@"test"ofType:@"vcf"];

NSData *vcfData = [NSDatadataWithContentsOfFile:vcfPath];

NSDictionary *vcfPart =[NSDictionary dictionaryWithObjectsAndKeys:@"text/directory;rntx-unix-mode=0644;rntname="test.vcf"",kSKPSMTPPartContentTypeKey,

@"attachment;rntfilename="test.vcf"",kSKPSMTPPartContentDispositionKey,

[vcfDataencodeBase64ForData],kSKPSMTPPartMessageKey,@"base64",kSKPSMTPPartContentTransferEncodingKey,nil];

testMsg.parts = [NSArrayarrayWithObjects:plainPart,vcfPart,nil];

[testMsg send];

该类也提供了相应的Delegate方法来让你更好的获知发送的状态.

-(void)messageSent:(SKPSMTPMessage *)message;

-(void)messageFailed:(SKPSMTPMessage*)message

error:(NSError*)error;

实例:

1.首先添加 MessageUI.framework 框架

2. 引入框架

  在类的头部

  #import <MessageUI/MessageUI.h>

  #import <MessageUI/MFMailComposeViewController.h>

3. 实现接口

  <MFMailComposeViewControllerDelegate>

4. 当点击一个button 跳转到发邮件的页面 调用我们发邮件

发邮件是有两种方式 :

1. 当你的设备支持的时候 the current device is configured for sending emails

我们使用一下的tool methods 中的displayComposerSheet 方法来发送邮件(其中使用了apple 集成好的 邮件picker --         MFMailComposeViewController) 在这里 我们将这个picker 看做是一个 模式视图 ModalViewController 推出了

2. 当设备不支持的时候 我们采用

launchMailAppOnDevice 方法发送 ( 采用打开一个url地址的 方式来发) ok..

-----点击按钮出发的方法

- (IBAction)contactBtnPressed:(id)sender {

Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));

if (mailClass != nil)

{

// We must always check whether the current device is configured for sending emails

if ([mailClass canSendMail])

{

[self displayComposerSheet];

}

else

{

[selflaunchMailAppOnDevice];

}

}

else

{

[selflaunchMailAppOnDevice];

}

}

----- tool Methods 工具方法

// 1. Launches the Mail application on the device.

-(void)launchMailAppOnDevice

{

NSString *recipients = @"mailto:maxwellsoftware@gmail.com&subject=Pocket Truth or Dare Support";

NSString *body = @"&body=email body!";

NSString *email = [NSString stringWithFormat:@"%@%@",
recipients, body];

email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

[[UIApplicationsharedApplication] openURL:[NSURLURLWithString:email]];

}

// 2. Displays an email composition interface inside the application. Populates all the Mail fields.

-(void)displayComposerSheet

{

MFMailComposeViewController *picker = [[MFMailComposeViewControlleralloc] init];/*MFMailComposeViewController邮件发送选择器*/

picker.mailComposeDelegate = self;

[picker setSubject:@"Pocket Truth
or Dare Support"];/*emailpicker标题主题行*/

// Custom NavgationBar background And set the backgroup picture

picker.navigationBar.tintColor = [UIColorcolorWithRed:209.0/255green:183.0/255blue:126.0/255alpha:1.0];

// picker.navigationBar.tintColor = [UIColor colorWithRed:178.0/255 green:173.0/255 blue:170.0/255 alpha:1.0];

if ([[[UIDevicecurrentDevice] systemVersion] floatValue]
>= 5.0) {

[picker.navigationBarsetBackgroundImage:[UIImageimageNamed:@"nav_bg.png"]forBarMetrics:UIBarMetricsDefault];

}

// Set up recipients

NSArray *toRecipients = [NSArrayarrayWithObject:@"maxwellsoftware@gmail.com"];

[picker setToRecipients:toRecipients];

// Fill out the email body text

struct utsname device_info;

uname(&device_info);

NSString *emailBody = [NSString

stringWithFormat:@"Model:
%s\nVersion: %@\nApp: %@\nFeedback here:\n",device_info.machine,

[[UIDevicecurrentDevice] systemVersion],/*设备系统环境*/

[[[NSBundlemainBundle] infoDictionary]

objectForKey:@"CFBundleShortVersionString"]];/**/

NSLog(@"ios 应用发布后 .app 应用文件路径::%@",[NSBundle
mainBundle] );

NSLog(@"ios 应用发布后 .app 应用文件内 ::%@",[[NSBundle
mainBundle] infoDictionary]);

[picker setMessageBody:emailBody isHTML:NO];

[selfpresentModalViewController:picker animated:YES];

[picker release];

}

// 3. 一个备用的方法

//- (void) alertWithTitle: (NSString *)_title_ msg: (NSString *)msg

//{

// UIAlertView *alert = [[UIAlertView alloc] initWithTitle:_title_

// message:msg

// delegate:nil

// cancelButtonTitle:@"Sure"

// otherButtonTitles:nil];

// [alert show];

// [alert release];

//}

----协议的委托方法

// Dismisses the email composition interface when users tap Cancel or Send. Proceeds to update the message field with the result of the operation.

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result
error:(NSError*)error

{

// NSString *title = @"Mail";

// NSString *msg;

// switch (result)

// {

// case MFMailComposeResultCancelled:

// msg = @"Mail canceled";//@"邮件发送取消";

// break;

// case MFMailComposeResultSaved:

// msg = @"Mail saved";//@"邮件保存成功";

// [self alertWithTitle:title msg:msg];

// break;

// case MFMailComposeResultSent:

// msg = @"Mail sent";//@"邮件发送成功";

// [self alertWithTitle:title msg:msg];

// break;

// case MFMailComposeResultFailed:

// msg = @"Mail failed";//@"邮件发送失败";

// [self alertWithTitle:title msg:msg];

// break;

// default:

// msg = @"Mail not sent";

// [self alertWithTitle:title msg:msg];

// break;

// }

[self dismissModalViewControllerAnimated:YES];

}
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