我想在我的应用程序中实现一项功能，即如果用户通过电子邮件或超过5人的短信共享应用程序链接，他/她可以解锁应用程序的完整版本。我已经看到了应用程序使用的这种方法。 （似乎可以通过Facebook和Twitter分享使用Facebook标记和推特提及）
所以，我的问题是，有没有办法在不使用Web服务或任何其他服务器端方法的情况下实现此逻辑？
有没有办法知道使用默认电子邮件/消息编写器发送的特定电子邮件或短信的收件人数？
答案 0 :(得分：0)
在我的某个应用中，我会在会议/ NSArray电子邮件中向所有收件人发送多封电子邮件 当电子邮件完成发送时，如果电子邮件已成功发送，已取消，已保存到草稿等，则其委派方法会报告 然后，我有一个块，在发送时运行以将此人标记为已发送并通过电子邮件发送
以下代码会发送单个电子邮件，其中附件包含数组中的多个用户
-(void)createEmailTo:(NSArray *)people path:(NSString *)path fileName:(NSString *)fileName subject:(NSString *)subject messageBody:(NSString *)messageBody{
//Create Email, see ccode later
FTAEmailMachine *emailComposer = [[FTAEmailMachine alloc] initMailTo:people
subject:subject
messageBody:messageBody
pathToFile:path
fileName:fileName];
//attach a dimiss block for SENT mail machines delagates, this scrolls through people in array sending them each a mail
emailComposer.dismissBlockSent = ^{
NSOrderedSet *contactsActions =[self.contactEmailArray[self.arrayCounter] valueForKey:@"contactsActions"];
if (self.arrayCounter <= self.emailArrayCount) {
for (FTAAction *action in contactsActions) {
[action setActionNoticeSent:YES]; // <-------- this is the important bit your after, i am setting a varible on the message being SENT
}
}
//adjust the array count of people
self.emailArrayCount -= 1;
self.arrayCounter += 1;
//Send the next mail in the array
if (self.emailArrayCount > 0) {
NSArray *contactEmailArray = [[NSArray alloc] initWithObjects:[self.contactEmailArray[self.arrayCounter] valueForKey:@"contactEmail"], nil];
[self createEmailTo:contactEmailArray
path:path
fileName:fileName
subject:[self.contactEmailArray[self.arrayCounter] valueForKey:@"subject"]
messageBody:[self.contactEmailArray[self.arrayCounter] valueForKey:@"messageBody"]];
}else{
[FTAAppIdioms deleteFileFrom:path];
}
};
//this is the blovcks that initiates if the mail was cancelled and not sent ** notice there isnt [action setActionNoticeSent:YES]; as before
emailComposer.dismissBlockCancelled = ^{
//When the email is dismissed after being actually sent
self.emailArrayCount -= 1;
self.arrayCounter += 1;
if (self.emailArrayCount > 0) {
NSArray *contactEmailArray = [[NSArray alloc] initWithObjects:[self.contactEmailArray[self.arrayCounter] valueForKey:@"contactEmail"], nil];
[self createEmailTo:contactEmailArray
path:path
fileName:fileName
subject:[self.contactEmailArray[self.arrayCounter] valueForKey:@"subject"]
messageBody:[self.contactEmailArray[self.arrayCounter] valueForKey:@"messageBody"]];
}else{
[FTAAppIdioms deleteFileFrom:path];
}
};
//present email as view
[self presentViewController:emailComposer
animated:NO
completion:^{}];
}
我的电子邮件机.h文件看起来像这样，请注意块
#import <UIKit/UIKit.h>
#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>
@interface FTAEmailMachine : UIViewController
<MFMailComposeViewControllerDelegate>
//designated init
-(instancetype)initMailTo:(NSArray *)people subject:(NSString *)subject messageBody:(NSString *)mesageBody pathToFile:(NSString *)path fileName:(NSString *)fileName;
//dismiss block
@property(nonatomic, copy) void (^dismissBlockSent)(void);
@property(nonatomic, copy) void (^dismissBlockCancelled)(void);
@end
执行工作的电子邮件机器.m文件中的主要方法如下所示：
-(void)sendMailTo:(NSArray *)people subject:(NSString *)subject messageBody:(NSString *)mesageBody pathToFile:(NSString *)path fileName:(NSString *)fileName{
//check if device can send mail
if ([MFMailComposeViewController canSendMail]) {
MFMailComposeViewController *mailComposer = [[MFMailComposeViewController alloc]init];
mailComposer.mailComposeDelegate = self;
[mailComposer setSubject:subject];
[mailComposer setMessageBody:mesageBody isHTML:YES];
if (people) {
[mailComposer setToRecipients:people];
}
//check if there is an attachment
if (fileName) {
// Determine the file name and extension
NSArray *filepart = [fileName componentsSeparatedByString:@"."];
NSString *extension = [filepart objectAtIndex:1];
// Determine the MIME type
NSString *mimeType;
if ([extension isEqualToString:@"pdf"]) {
mimeType = @"application/pdf";
} else if ([extension isEqualToString:@"csv"]) {
mimeType = @"text/csv";
} else if ([extension isEqualToString:@"plist"]) {
mimeType = @"image/plist";
} else if ([extension isEqualToString:@"jpg"]) {
mimeType = @"image/jpeg";
} else if ([extension isEqualToString:@"png"]) {
mimeType = @"image/png";
} else if ([extension isEqualToString:@"doc"]) {
mimeType = @"application/msword";
} else if ([extension isEqualToString:@"ppt"]) {
mimeType = @"application/vnd.ms-powerpoint";
} else if ([extension isEqualToString:@"html"]) {
mimeType = @"text/html";
}
//attach the file to the email
[mailComposer addAttachmentData:[NSData dataWithContentsOfFile:path]
mimeType:mimeType
fileName:fileName];
}
[self presentViewController:mailComposer
animated:YES
completion:nil];
} else {
//crferate a slert if device cant send mail
[FTAAppIdioms createOkAlertWithTitle:@"Email"
message:@"Sorry your device can't send emails"
viewController:self
tag:0];
}
}
那么重要的一点就是委托方法，注意解雇块：
-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
switch (result)
{
case MFMailComposeResultCancelled:
//notice this dimissblock action
[[self presentingViewController] dismissViewControllerAnimated:YES
completion:self.dismissBlockCancelled];
break;
case MFMailComposeResultSaved:
break;
case MFMailComposeResultSent:
//notice this dimissblock action
[[self presentingViewController] dismissViewControllerAnimated:YES
completion:self.dismissBlockSent];
break;
case MFMailComposeResultFailed:
break;
default:
{
[FTAAppIdioms createOkAlertWithTitle:@"Email"
message:@"Sending Failed - Unknown Error"
viewController:self
tag:0];
}
break;
}
[[self presentingViewController] dismissViewControllerAnimated:YES
completion:nil];
}
希望你可以看到添加dismiss块允许你设置一个变量（或其他）成功发送的电子邮件，它应该回答你的问题 我个人可能会将结果存储在NSDefault Int或类似的东西中。