ios app内发送短信

iOS4.0新加入了MFMessageComposeViewController和MFMessageComposeViewControllerDelegate,提供了发送短信的接口,可以像发送邮件那样不用跳出程序来发送短信. 介绍可参阅Message UI
Framework Reference

一些笔记:

MFMessageComposeViewController

• 提供了操作界面
• 使用前必须检查canSendText方法,若返回NO则不应将这个controller展现出来,而应该提示用户不支持发送短信功能.
• 界面不能自行定制
• 要发送的短信的内容(body)和收件人(recipients)在展现这个controller前需初始化好,展现了之后短信内容不能通过程序来进行修改.不过用户仍然可以手工修改短信内容和选择收件人
• 用户点了发送或者取消,或者发送失败时,MFMessageComposeViewControllerDelegate 的– messageComposeViewController:didFinishWithResult:方法都能得到通知,在这里进行相应的处理

若在iOS3.0上运行的话,会提示dyld: Symbol not found: _OBJC_CLASS_$_MFMessageComposeViewController .解决方案:

1. MessageUI.framework的引入类型应选择weak(在target -> Get Info -> General -> Linked Libraries -> MessageUI.framework -> Type 里修改)
2. 不要在.h文件里直接import MessageUI/MFMessageComposeViewController.h,改为import <MessageUI/MessageUI.h>

代码:

#pragma mark -
#pragma mark SMS

-(IBAction)showSMSPicker:(id)sender {
	//	The MFMessageComposeViewController class is only available in iPhone OS 4.0 or later.
	//	So, we must verify the existence of the above class and log an error message for devices
	//		running earlier versions of the iPhone OS. Set feedbackMsg if device doesn't support
	//		MFMessageComposeViewController API.
	Class messageClass = (NSClassFromString(@"MFMessageComposeViewController"));

	if (messageClass != nil) {
		// Check whether the current device is configured for sending SMS messages
		if ([messageClass canSendText]) {
			[self displaySMSComposerSheet];
		}
		else {
			[UIAlertView quickAlertWithTitle:@"设备没有短信功能" messageTitle:nil dismissTitle:@"关闭"];
		}
	}
	else {
		[UIAlertView quickAlertWithTitle:@"iOS版本过低,iOS4.0以上才支持程序内发送短信" messageTitle:nil dismissTitle:@"关闭"];
	}
}

-(void)displaySMSComposerSheet
{
	MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];
	picker.messageComposeDelegate = self;

	NSMutableString* absUrl = [[NSMutableString alloc] initWithString:web.request.URL.absoluteString];
	[absUrl replaceOccurrencesOfString:@"http://i.aizheke.com" withString:@"http://m.aizheke.com" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [absUrl length])];

	picker.body=[NSString stringWithFormat:@"我在爱折客上看到：%@ 可能对你有用，推荐给你！link：%@"
										,[web stringByEvaluatingJavaScriptFromString:@"document.title"]
										,absUrl];
	[absUrl release];
	[self presentModalViewController:picker animated:YES];
	[picker release];
}

- (void)messageComposeViewController:(MFMessageComposeViewController *)controller
				 didFinishWithResult:(MessageComposeResult)result {

	switch (result)
	{
		case MessageComposeResultCancelled:
			LOG_EXPR(@"Result: SMS sending canceled");
			break;
		case MessageComposeResultSent:
			LOG_EXPR(@"Result: SMS sent");
			break;
		case MessageComposeResultFailed:
			[UIAlertView quickAlertWithTitle:@"短信发送失败" messageTitle:nil dismissTitle:@"关闭"];
			break;
		default:
			LOG_EXPR(@"Result: SMS not sent");
			break;
	}
	[self dismissModalViewControllerAnimated:YES];
}