MFMessageComposeViewController在ios8上未顯示發送按鈕和消息正文

Question

MFMessageComposeViewController不會在ios8上顯示發送按鈕和消息正文，當出現在收件人列表鍵盤上的點擊同時出現發送按鈕時，也會顯示消息正文。 以下是消息功能的代碼：

MFMessageComposeViewController *msgController = [[MFMessageComposeViewController alloc] init] ;
if([MFMessageComposeViewController canSendText])
{
     if (msgController)
      {
           msgController = nil;
           msgController = [[MFMessageComposeViewController alloc] init] ;
      }
NSString *messageBody =@"helloWorld";
msgController.body = messageBody;
msgController.recipients = numberArray;
msgController.messageComposeDelegate = (id)self;
[self presentViewController:msgController animated:YES completion:^{}];

提前致謝。

Answer 1

首先將MessageUI框架添加到您的應用程序框架，然后

#import <MessageUI/MessageUI.h>
@interface class() 
<MFMailComposeViewControllerDelegate>
{
....
}
@end

然后在您的類實現中編寫

     if ([MFMailComposeViewController canSendMail])
     {
         MFMailComposeViewController *mail = [[MFMailComposeViewController alloc] init];
         [mail setMailComposeDelegate:self];
         [mail setSubject:@"Subject goes here..."];
         [mail setMessageBody:@"Message body goes here..." isHTML:NO];
         [self presentViewController:mail animated:YES completion:NULL];
     }

並像這樣實現MFMailcomposeViewController的委托

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
    [controller dismissViewControllerAnimated:YES completion:nil];
}

Answer 2

正文中應該有收件人和一些消息，才能啟用“發送”按鈕。

這是參考鏈接：

https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/SystemMessaging_TopicsForIOS/Articles/SendinganSMSMessage.html#//apple_ref/doc/uid/TP40010416-SW1

http://iosdevelopertips.com/core-services/how-to-send-an-sms-progammatically.html

希望這可以幫助！