Iphone 发送短信时，应用程序正在崩溃

我想在iPhone4中使用以下代码发送短信，但应用程序正在崩溃，原因仅是此代码

if ([MFMessageComposeViewController canSendText]) {
                MFMessageComposeViewController *smsComposerController = [[[MFMessageComposeViewController alloc] init] autorelease];
                [smsComposerController setBody:@"First SMS"];
                smsComposerController.recipients = [NSArray arrayWithObjects:@"9886333333",@"9980444444",nil];
                smsComposerController.messageComposeDelegate = self;
                [smsComposerController release];
            }

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我是新发短信的，有人能帮我找出我做错了什么吗？

你正在

自动释放
，然后
再次释放

只要释放它一次。您可以查看内存管理规则。
如果（[MFMessageComposeViewController canSendText]）{
MFMessageComposeViewController*smsComposerController=[[MFMessageComposeViewController alloc]init]autorelease]；
[SMSCOmposeController setBody:@“第一条短信”]；
smsComposerController.recipients=[NSArray阵列，其对象：@“9886333”，“99804444”，无]；
smsComposerController.messageComposeDelegate=self；
[smsComposerController发布]；您需要添加
[self-presentModalViewController:smsComposerController动画：是]；
在您的代码中发送短信

if ([MFMessageComposeViewController canSendText]) {
            MFMessageComposeViewController *smsComposerController = [[[MFMessageComposeViewController alloc] init] autorelease];
            [smsComposerController setBody:@"First SMS"];
            smsComposerController.recipients = [NSArray arrayWithObjects:@"9886333333",@"9980444444",nil];
            smsComposerController.messageComposeDelegate = self;
           [self presentModalViewController:smsComposerController animated:YES];
        }

if ([MFMessageComposeViewController canSendText]) {
            MFMessageComposeViewController *smsComposerController = [[[MFMessageComposeViewController alloc] init] autorelease];
            [smsComposerController setBody:@"First SMS"];
            smsComposerController.recipients = [NSArray arrayWithObjects:@"9886333333",@"9980444444",nil];
            smsComposerController.messageComposeDelegate = self;
           [self presentModalViewController:smsComposerController animated:YES];
        }