Iphone MFMailComposeViewController的使用和Apple Approval过程

在我的应用程序中，我有一个日志机制，可以让客户通过邮件发送日志。为此，我在我的应用程序中集成了Apple MFMailComposeViewController。如果客户使用操作系统版本（2.x）较低的设备，或者设备上没有显示电子邮件帐户，我会推送一些UIAlertsView，并向用户发送一些建议性消息。有人能看一下我下面的代码吗？如果有什么东西可能会被苹果公司拒绝，请回答

BOOL canSendmail = [MFMailComposeViewController canSendMail];

if (!canSendmail) {


    NSMutableString* osVersion = [NSMutableString stringWithString:[[UIDevice currentDevice] systemVersion]];
    EventsLog* logs = [EventsLog getInstance];

    if ([osVersion characterAtIndex : 0] == '2'  || [osVersion characterAtIndex : 0] == '1' ) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Email", @"") 
                                                        message:NSLocalizedString(@"Failed to send E-mail.For this service you need to upgrade the iPhone OS to 3.0 version or later", @"")
                                                       delegate:self cancelButtonTitle:NSLocalizedString(@"OK", @"") otherButtonTitles: nil];
        [alert show];
        [alert release];



        [logs writeEvent : @"Cannot send e-mail - iPhone OS needs upgrade to at least 3.0 version" classSource:@"LogsSessionDetailViewController@sendEmail" details : (@" device OS version is %@",osVersion)];

        return;

    }
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Email", @"") 
                                                    message:NSLocalizedString(@"Failed to send E-mail.Please set an E-mail account and try again", @"")
                                                   delegate:self cancelButtonTitle:NSLocalizedString(@"OK", @"") otherButtonTitles: nil];
    [alert show];
    [alert release];

    [logs writeEvent : @"Cannot send e-mail "  
          classSource:@"LogsSessionDetailViewController@sendEmail" details : @"-  no e-mail account activated"];

    return;
}



UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Email", @"") 
                message:NSLocalizedString(@"The data you are sending will be used to improve the application. You are free to add any personal comments in this e-mail", @"")
                delegate:self cancelButtonTitle:NSLocalizedString(@"Cancel", @"") otherButtonTitles: nil];

[alert addButtonWithTitle:NSLocalizedString(@"Submit", @"")];
[alert show];
[alert release];

非常感谢,

---

Alex。

我不会说appstore的许可/拒绝，但你的代码必须在iPhone OS 2.x上崩溃-你可以打电话

BOOL canSendmail = [MFMailComposeViewController canSendMail];

不检查此调用是否可行（MFMailComposeViewController类在2.x系统上不可用）。此外，手动检查操作系统版本也不是一个好的做法。相反，您必须首先检查当前运行时中是否存在

MFMailComposeViewController

：

if ( !NSClassFromString(@"MFMailComposeViewController") ){
    // Put code that handles OS 2.x version
    return;
}

if (![MFMailComposeViewController canSendMail]){
    // Put code that handles the case when mail account is not set up
    return;
}

//Finally, create and send your log
...

---

注意：不要忘记，必须在目标设置中将MessageUI框架的链接类型设置为“弱”-如果链接类型为“必需”（默认值），则应用程序将在启动时在旧系统上崩溃

谢谢你，弗拉基米尔。我没有想到这一次——事实上那会崩溃：）。