iOS調用系統的發短信功能可以分為兩種：1，程序外調用系統發短信。2，程序內調用系統發短信。第二種的好處是用戶發短信之後還可以回到app。這對app來說非常重要。

程序外調用系統發短信

這個方法其實很簡單，直接調用openURL即可：

 

[[UIApplication sharedApplication]openURL:[NSURL URLWithString:@sms://13888888888]];

 

程序內調用系統發短信

1）導入MessageUI.framework，並引入頭文件：

#import 

2）實現代理方法MFMessageComposeViewControllerDelegate

  -(void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{
    [self dismissViewControllerAnimated:YES completion:nil];
    switch (result) {
        case MessageComposeResultSent:
            //信息傳送成功

            break;
        case MessageComposeResultFailed:
            //信息傳送失敗

            break;
        case MessageComposeResultCancelled:
            //信息被用戶取消傳送

            break;
        default:
            break;
    }
}

3）發送短信

  -(void)showMessageView:(NSArray *)phones title:(NSString *)title body:(NSString *)body
{
    if( [MFMessageComposeViewController canSendText] )
    {
        MFMessageComposeViewController * controller = [[MFMessageComposeViewController alloc] init];
        controller.recipients = phones;
        controller.navigationBar.tintColor = [UIColor redColor];
        controller.body = body;
        controller.messageComposeDelegate = self;
        [self presentViewController:controller animated:YES completion:nil];
        [[[[controller viewControllers] lastObject] navigationItem] setTitle:title];//修改短信界面標題
    }
    else
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@提示信息
                                                        message:@該設備不支持短信功能
                                                       delegate:nil
                                              cancelButtonTitle:@確定
                                              otherButtonTitles:nil, nil];
        [alert show];
    }
}

 

參數phones：發短信的手機號碼的數組，數組中是一個即單發,多個即群發。

4）調用發短信的方法

    [self showMessageView:[NSArray arrayWithObjects:@13888888888,@13999999999, nil] title:@test body:@你是土豪麼，麼麼哒];