调用短信给一段默认文字

#pragma mark - 调用sendSMS函数
-(void)sendSmsInvite:(NSString*)phone
{
    BOOL canSendSMS = [MFMessageComposeViewController canSendText];
    NSLog(@"can send SMS [%d]", canSendSMS);
    if (canSendSMS) {
        MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];
        picker.messageComposeDelegate = self;
        picker.navigationBar.tintColor = [UIColor blackColor];
        picker.body = [NSString stringWithFormat:@"文字描述，快来找我，咱们一起带孩子出去玩吧！"];
        // 默认收件人(可多个)
        picker.recipients = [NSArray arrayWithObject:phone];
        [self presentViewController:picker animated:YES completion:^{
            
        }];
    }
}

// 处理发送完的响应结果
- (void)messageComposeViewController :(MFMessageComposeViewController *)controller
                 didFinishWithResult :( MessageComposeResult)result
{
    // Notifies users about errors associated with the interface
    switch (result) {
        case MessageComposeResultCancelled:
            if (DEBUG) NSLog(@"Result: canceled");
            break;
        case MessageComposeResultSent:
            if (DEBUG) NSLog(@"Result: Sent");
            break;
        case MessageComposeResultFailed:
            if (DEBUG) NSLog(@"Result: Failed");
            break;
        default:
            break;
    }
    [self dismissViewControllerAnimated:YES completion:^{
        
    }];
}