//我們應用中也是常常會用到這些應用,這裡說一些常用且好理解的方法!

#import "NewViewController.h"
#import <MessageUI/MessageUI.h>

@interface NewViewController ()<MFMailComposeViewControllerDelegate,MFMessageComposeViewControllerDelegate>//郵件代理  簡訊代理 這兩個主要是使用者操作回撥

@end

@implementation NewViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSArray *arr = @[@"電話",@"簡訊",@"郵件"];
    for(int i = 0;i<6;i++)
    {
        UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
        btn.frame = CGRectMake(10+i%3*100, 80+i/3*150, 100, 60);
        [btn setTitle:arr[i%3] forState:UIControlStateNormal];
        [self.view addSubview:btn];
        btn.tag = 1000+i;
        [btn addTarget:self action:@selector(btnDown:) forControlEvents:UIControlEventTouchUpInside];
    }
    
    UILabel *lab = [[UILabel alloc] initWithFrame:CGRectMake(0, 150, 320, 40)];
    lab.text = @"我上面是直接跳轉開啟，下面更加高階一點的支援預定義";
    [self.view addSubview:lab];

}

-(void)btnDown:(UIButton*)btn
{
    switch (btn.tag) {
        case 1000:
        {//關鍵字：tel  直接撥打電話,不會有任何提示
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://13811111234"]];
            break;
        }
        case 1001:
        {//關鍵字：sms  收件人直接為13811111234,無簡訊內容
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://13811111234"]];
            break;
        }
        case 1002:
        {//關鍵字：mail  定義好了郵件接受者,無任何內容
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://
 
[email protected]"]];
            break;
        }
            
            
        case 1003:
        {//通過webView呼叫 會有一個系統的提示確認是否呼叫
            NSURL *phoneURL             = [NSURL URLWithString:[NSString stringWithFormat:@"tel:%@",@"13811111234"]];
            UIWebView *phoneCallWebView = [[UIWebView alloc] initWithFrame:CGRectZero];
            [phoneCallWebView loadRequest:[NSURLRequest requestWithURL:phoneURL]];
            [self.view addSubview:phoneCallWebView];
            break;
        }
        case 1004:
        {
            //例項化messageController,可以預先定義傳送簡訊內容
            MFMessageComposeViewController *controller = [[MFMessageComposeViewController alloc] init];
            
            if([MFMessageComposeViewController canSendText])
            {//判斷裝置能否實現發簡訊功能
                
                controller.body                   = @"恭喜您!春天種了一個蘋果表,秋天收到一個破蘋果表";
                controller.recipients             = @[@"10010",@"10086"];                 //簡訊接收物件
                controller.messageComposeDelegate = self;                                 //簡訊功能回撥
                [self presentViewController:controller animated:YES completion:nil];
            }
            break;
        }
        case 1005:
        {
            NSData *imageData                       = UIImagePNGRepresentation([UIImage imageNamed: @"icon.png"]);
            MFMailComposeViewController *mailPicker = [[MFMailComposeViewController alloc] init]; //例項化郵件VC
            mailPicker.mailComposeDelegate          = self;
<pre name="code" class="objc">
            [mailPicker setSubject: @"我是主題,主題,主,題....."];                                   //設定主題
            [mailPicker setToRecipients: @[@"
 
[email protected]",@"[email protected]"]];         // 添加發送者，是個陣列
            [mailPicker addAttachmentData: imageData mimeType: @"" fileName: @"icon.png"];       // 新增圖片
            [mailPicker setMessageBody:@"我是郵件的正文" isHTML:YES];                              //新增正文

            [self presentViewController:mailPicker animated:YES completion:nil];                //將mailController彈出
            break;
        }
        default:
            break;
    }
}

/**
 *  郵件傳送後回撥
 *
 *  @param controller 檢視控制器物件管理郵件組合檢視。
 *  @param result     使用者行為返回結果
 *  @param error      如果出現錯誤,會包含錯誤物件和錯誤資訊
 */
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
    NSString *msg;
    switch (result)
    {
        case MFMailComposeResultCancelled:
            msg = @"郵件傳送取消";
            break;
        case MFMailComposeResultSaved:
            msg = @"郵件儲存成功";
            break;
        case MFMailComposeResultSent:
            msg = @"郵件傳送成功";
            break;
        case MFMailComposeResultFailed:
            msg = @"郵件傳送失敗";
            break;
        default:
            break;
    }
    [self dismissViewControllerAnimated:YES completion:nil];
}

/**
 *  簡訊行為回撥
 *
 *  @param controller  檢視控制器物件管理郵件組合檢視。
 *  @param result     使用者返回結果
 */
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{
    [self dismissViewControllerAnimated:YES completion:nil];//將messageController移除
    
    if (result == MessageComposeResultCancelled)//返回值為取消
    {
        NSLog(@"Message cancelled");
    }
    else if (result == MessageComposeResultSent)//返回值為發出
    {
        NSLog(@"Message sent");
    }
    else//其他問題
    {
        NSLog(@"Message failed");
    }
}

@end