需要引入框架:

MessageUI.framework

布局如下:

 

短信和郵件:

 

#import ViewController.h
#import 

@interface ViewController ()//遵循協議

@end

@implementation ViewController

短信功能:

 

 

//短信功能
- (IBAction)messageButtonAction:(UIButton *)sender {
#pragma mark 程序外發送短信
    
    /*
    //定義打開短信的url, 關鍵字: sms:
    NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@sms://%@,@10086]];
    //判斷程序是否可以調用打開短信功能
    if ([[UIApplication sharedApplication] canOpenURL:url]) {
        [[UIApplication sharedApplication] openURL:url];
    }else{
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@提示 message:@您的設備不支持此短信功能 delegate:self cancelButtonTitle:@確定 otherButtonTitles:nil, nil];
        [alert show];
    }
     */
/*
 用openURL來打開程序中的短信功能, 需要用到關鍵字: sms:, 後面加上要發送的電話就可以了;
 缺點:1.這個方法會跳出我們正在運行的程序,打開系統的短信界面, 但當用戶關閉短信後, 無法回到程序.
     2.這個方法我們只能定義要發送的手機號, 無法編輯發送的短信內容;
 
 */
    }

 

#pragma mark 程序內發送短信

/*

為了彌補上述的兩個方法的不足,需要另一種使用短信功能的方法:程序內使用短信功能.

*/

 

//1.添加短信所需要的框架: MessageUI.framework

//2.引入頭文件,實現如下代碼

//3.判斷是否可以發短信

- (IBAction)messageButtonAction:(UIButton *)sender {
#pragma mark 程序外發送短信
  BOOL canSendMessage = [MFMessageComposeViewController canSendText];
    if (canSendMessage) {
        //創建短信視圖控制器
        MFMessageComposeViewController *messageVC = [[MFMessageComposeViewController alloc]init];
        //設置代理
        messageVC.messageComposeDelegate = self;
        
        //設置短信內容
        messageVC.body = @來一條信息;
        
        //設置電話, 是一個數組, 可以設置多個電話, 實現群發功能
        messageVC.recipients = @[@10086,@10010];
        
        //打開短信功能, 通過這個方法會在程序內打開一個短信界面;
        
        [self presentViewController:messageVC animated:YES completion:nil];
        
    }else{
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@提示 message:@您的設備不支持此短信功能 delegate:self cancelButtonTitle:@確定 otherButtonTitles:nil, nil];
        [alert show];
    }
    
    
}

信息的代理方法:

 

- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result{
    
    //MessageComposeResult 的枚舉值:
//    MessageComposeResultCancelled, //取消發送短信功能
//    MessageComposeResultSent,     //發送短信
//    MessageComposeResultFailed    //發送失敗
    if (result == MessageComposeResultCancelled || result == MessageComposeResultSent) {
        [self dismissViewControllerAnimated:YES completion:nil];
    }
    
}

 

郵件功能:

//郵件功能
- (IBAction)mailButtonAction:(UIButton *)sender {
#pragma mark 程序外發送郵件
    
    /*
    //打開系統郵件頁面, mailto:
    NSURL *mailURL = [NSURL URLWithString:[NSString stringWithFormat:@mailto:%@,@[email protected]]];
    //cc:抄送對象  subject:主題  body:內容
    //NSURL *mailURL2 = [NSURL URLWithString:[NSString stringWithFormat:@mailto:%@?cc = %@&subject = %@&body = %@,@[email protected],@[email protected],@郵件,@你好啊!]];
    
    if ([[UIApplication sharedApplication] canOpenURL:mailURL]) {
        [[UIApplication sharedApplication] openURL:mailURL];
    }else{
        
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@提示 message:@您的設備不支持郵件功能 delegate:self cancelButtonTitle:@確定 otherButtonTitles:nil, nil];
        [alert show];
        
    }
     */
    /*
     此方法來發送郵件同上述短信一樣,也會跳出程序,調用系統的郵件界面;
     */
    
#pragma mark 程序內發送郵件
    
    //判斷是否可以發送郵件
    BOOL canSendMail = [MFMailComposeViewController canSendMail];
    if (canSendMail) {
        //創建郵件視圖控制器
        MFMailComposeViewController *mailVC = [[MFMailComposeViewController alloc]init];
        //設置接收郵件人, 數組,可以實現群發
        [mailVC setToRecipients:@[@[email protected],@[email protected]]];
        
        //設置抄送對象,
        [mailVC setCcRecipients:@[@[email protected],@[email protected]]];
        
        //設置密送
        [mailVC setBccRecipients:@[@[email protected]]];
        
        //設置內容
        [mailVC setMessageBody:@很高興認識你 isHTML:NO];
        
        //設置代理
        mailVC.mailComposeDelegate = self;
        //打開郵件功能
        [self presentViewController:mailVC animated:YES completion:nil];
    }else{
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@提示 message:@您的設備不支持郵件功能 delegate:self cancelButtonTitle:@確定 otherButtonTitles:nil, nil];
        [alert show];
        
    }
    
    
}

郵件代理的方法:

 

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
    //    MFMailComposeResultCancelled,  取消發送
    //    MFMailComposeResultSaved,      保存
    //    MFMailComposeResultSent,       發送
    //    MFMailComposeResultFailed      發送失敗
    
    switch (result) {
        case MFMailComposeResultCancelled:
            NSLog(@取消發送);
            break;
        case MFMailComposeResultSaved:
            NSLog(@保存);
            break;
        case MFMailComposeResultSent:
            NSLog(@發送成功);
            break;
        case MFMailComposeResultFailed:
            NSLog(@失敗);
            break;
            
        default:
            break;
    }
    
    [self dismissViewControllerAnimated:YES completion:nil];
    
}

最終效果:(由於模擬器沒法演示發送短信,所以會出現下面的現象)