我在我的应用程序中使用MFMailComposeViewController canSendMail一切都很好但是如果iPhone或iPad上没有帐户,它会返回我想要更改的标准alertview.如果我在其他地方发出警报,它将返回2个警报.有没有办法改变它返回的标准警报？或者至少改变其中的文字？
MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];
if ([MFMailComposeViewController canSendMail]) {
controller.mailComposeDelegate = self;
controller.navigationBar.tintColor = [UIColor grayColor];
NSArray *toRecipients = [NSArray arrayWithObject:@"info@info.nl"];
[controller setToRecipients:toRecipients];
[controller setSubject:@"bericht van info"];
[self presentModalViewController:controller animated:YES];
[controller release];
}
else {
}