erpsuiteios/RedAnt ERP Mobile/common/Functions/PDF+Web/PDFViewController.m

//
//  PDFViewController.m
//  RedAnt ERP Mobile
//
//  Created by Ray on 14-8-7.
//  Copyright (c) 2014年 United Software Applications, Inc. All rights reserved.
//

#import "PDFViewController.h"
#import "RAUtils.h"
#import "const.h"
#import "AppDelegate.h"
#import "PDFUtils.h"


@interface PDFViewController ()

@end

@implementation PDFViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    
    NSLog(@"pdf viewer loaded");
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    UIRefreshControl *ref = [[UIRefreshControl alloc]init];
    ref.tag = 200 ;
    ref.attributedTitle = [[NSAttributedString alloc]initWithString:@"drag to refresh"];
    ref.tintColor = [UIColor colorWithRed:0.10 green:0.68 blue:0.94 alpha:0.7];
    //    ref.hidden = true;
    [ref addTarget:self action:@selector(changeCell) forControlEvents:UIControlEventValueChanged];
    [self.webView.scrollView addSubview:ref];
    
    
    self.webView.dataDetectorTypes=UIDataDetectorTypeAll;
    
    
  
    

   // self.btnsave.tintColor = UIColorFromRGB(0x996633);
    
    if(self.defaultStyle)
    {

        self.btnshare =[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction
                                                                     target:self
                                                                     action:@selector( onActionClick:)];

        
        
        self.btnPrint =[[UIBarButtonItem alloc] initWithTitle:@"Print"
                                                                    style:UIBarButtonItemStylePlain
                                                                    target:self
                                                                    action:@selector( onPrintClick:)];
        
        NSMutableArray * items = [[NSMutableArray alloc]init];
        [items addObject:self.btnshare];
        [items addObject:self.btnPrint];

        self.navigationItem.rightBarButtonItems =items;
        
        
       if (self.navigationController.viewControllers[0]==self )
       {
           UIBarButtonItem *closeButton =nil;
           
           
           
           closeButton=[[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"close"] imageWithRenderingMode:UIImageRenderingModeAutomatic]
                                                        style:UIBarButtonItemStylePlain
                                                       target:self
                                                       action:@selector( onCloseClick:)];
           //[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Close", nil) style:UIBarButtonItemStylePlain target:self action:@selector(onCloseClick:)];
           //    closeButton.title = @"Close";
           
           self.navigationItem.leftBarButtonItem = closeButton;
       }

        
    }
    else
    {
        UIBarButtonItem *closeButton =nil;
        
        
        
        closeButton=[[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"back"] imageWithRenderingMode:UIImageRenderingModeAutomatic]
                                                     style:UIBarButtonItemStylePlain
                                                    target:self
                                                    action:@selector( onBackClick:)];
        //[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Close", nil) style:UIBarButtonItemStylePlain target:self action:@selector(onCloseClick:)];
        //    closeButton.title = @"Close";
        
        self.navigationItem.leftBarButtonItem = closeButton;
        
        
        
        
        self.btnshare = [[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"share"] imageWithRenderingMode:UIImageRenderingModeAutomatic]
                                                         style:UIBarButtonItemStylePlain
                                                        target:self
                                                        action:@selector(onActionClick:)];//[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Edit", nil) style:UIBarButtonItemStylePlain target:self action:@selector(onOpenOrderClick:)];
        
        // self.btnshare.tintColor = UIColorFromRGB(0x996633);
        
        self.btnemail =[[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"mail"] imageWithRenderingMode:UIImageRenderingModeAutomatic]
                                                        style:UIBarButtonItemStylePlain
                                                       target:self
                                                       action:@selector(onEmailClick:)];// [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Commit", nil) style:UIBarButtonItemStylePlain target:self action:@selector(onCommitOrderClick:)];
        
        //  self.btnemail.tintColor = UIColorFromRGB(0x996633);
        
        // self.btnSend = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Email", nil) style:UIBarButtonItemStylePlain target:self action:@selector(onSendMailClick:)];
        
        
        
        self.btnsave = [[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"save"] imageWithRenderingMode:UIImageRenderingModeAutomatic]
                                                        style:UIBarButtonItemStylePlain
                                                       target:self
                                                       action:@selector(onSaveClick:)];        
        UIBarButtonItem *fixedItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
        fixedItem.width = 20.0f;
        NSMutableArray * items = [[NSMutableArray alloc]init];
        [items addObject:self.btnshare];
        [items addObject:fixedItem];
        [items addObject:self.btnemail];
        
        if(self.canSave)
        {
            [items addObject:fixedItem];
            [items addObject:self.btnsave];
        }
        self.navigationItem.rightBarButtonItems=items;
        
        self.btnshare.enabled =false;
        
        
        self.btnemail.enabled =false;
        self.btnsave.enabled =false;
        
    }

    
//   self.url=@"http://192.168.1.3:8080/npd/test.pdf";
//    NSURL* url = [NSURL URLWithString:self.url];
//    
//    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:self.url]        cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:2000];
//    
//    
//    [self.webView loadRequest:request];
    
    
    [self loadcontent];
}
- (void)onBackClick:(UIButton *)sender {
    
    
    [self.navigationController popViewControllerAnimated:FALSE];
}
- (void)onCloseClick:(UIButton *)sender {
    
    [self dismissViewControllerAnimated:false completion:nil];
    //[self.navigationController popViewControllerAnimated:FALSE];
}
-(void)ReloadData
{
    
    //    Count ++ ;
    //    [mytabelview reloadData];
    UIRefreshControl *reF = (UIRefreshControl *)[self.view viewWithTag:200];
    
    [reF endRefreshing];
    [self loadcontent];

    
}
-(void) loadcontent
{
    
    UIAlertView * waitalert = [RAUtils waiting_alert:@"Please wait..." title:@"Loading..."];
    self.mum.hidden=false;
    
    if(self.isLocalfile)
    {
        /*
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
        NSString *cachefolder = [paths objectAtIndex:0];
        NSString *pdfFolder = [cachefolder stringByAppendingPathComponent:@"pdf_cache"];
        self.url = [pdfFolder stringByAppendingPathComponent:self.url];
        */
        
        self.content= [NSData dataWithContentsOfFile:self.url];
        
        [waitalert dismissWithClickedButtonIndex:0 animated:FALSE];
        
        self.filename=[self.url lastPathComponent];
        
        self.btnshare.enabled =true;
        
        
        self.btnemail.enabled =true;
        self.btnsave.enabled =true;
        
//        if(self.onLoadSuccess)
//        self.onLoadSuccess(self.url);
//        
//        if(self.autoPrint)
//        [self startAirPrintWithData:self.content];
        
//        NSLog(@"put file to webview");
//        [self.webView loadData:self.content MIMEType:@"application/pdf" textEncodingName:nil baseURL:nil];
        
        NSURL *url = [NSURL fileURLWithPath:self.url];
        NSURLRequest *request = [NSURLRequest requestWithURL:url];
        [self.webView loadRequest:request];
        
    }
    else
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        
        
        NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:self.url]        cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60*5];
        
        //设置请求方式为get
        
        [request setHTTPMethod:@"GET"];
        
        //添加用户会话id
        
        [request addValue:@"text/html" forHTTPHeaderField:@"Content-Type"];
        
        //连接发送请求
        
        
        NSHTTPURLResponse* urlResponse = nil;
        
        NSError *error = nil;
        
        self.content= [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];
        
        self.filename = [urlResponse suggestedFilename];
        
        
        dispatch_async(dispatch_get_main_queue(), ^{
            [waitalert dismissWithClickedButtonIndex:0 animated:FALSE];
            
            [[self navigationController] setNavigationBarHidden:self.hidenavi animated:NO];
            self.navigationItem.title = self.save_name;
            UIRefreshControl *reF = (UIRefreshControl *)[self.view viewWithTag:200];
          //  self.content=nil;
            if(self.content!=nil&&self.content.length>0)
            {
                [reF removeFromSuperview];
                
                
               // NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                NSString *path = NSTemporaryDirectory();
                NSString *filePath = [path stringByAppendingPathComponent:self.filename];
                //    NSError *error = nil;
                //    BOOL bo = [[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:&error];
                //    NSAssert(bo,@"创建目录失败");
                if (self.cachePath.length) {
                    filePath = self.cachePath;
                }
                [self.content writeToFile:filePath atomically:YES];
                
                
                self.btnshare.enabled =true;
                
                
                self.btnemail.enabled =true;
                self.btnsave.enabled =true;
                
                
                
                NSURL *url = [NSURL fileURLWithPath:filePath];
                NSURLRequest *request = [NSURLRequest requestWithURL:url];
                [self.webView loadRequest:request];
                
                

                
                
                
 //               int a=0;
            }
            else
            {
                [RAUtils message_alert:nil  title:@"Open PDF Failed" controller:self];
                
                if(self.autoPrint)
                    [self.navigationController popViewControllerAnimated:true];
//                self.content = [self.url dataUsingEncoding:NSUTF8StringEncoding];
            }
            
            ;
//            DebugLog(@"%@",[[NSString alloc] initWithData:self.content encoding:NSASCIIStringEncoding]);
            //
            
//            DebugLog(urlResponse.MIMEType);
            
//            [self.webView loadData:self.content MIMEType:urlResponse.MIMEType textEncodingName:nil baseURL:nil];
            
            
            
            
        });
    });
    
    
    
    
}
-(void)changeCell
{
    UIRefreshControl *reF = (UIRefreshControl *)[self.view viewWithTag:200];
    reF.attributedTitle = [[NSAttributedString alloc]initWithString:@"refreshing"];
    if ([self respondsToSelector:@selector(ReloadData)])
    [self performSelector:@selector(ReloadData) withObject:nil afterDelay:1];
//    DebugLog(@"refresh!!!!!!!!");
    
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
-(void) viewWillAppear:(BOOL)animated
{
    
    
    [super viewWillAppear:animated];
  
    [[self navigationController] setNavigationBarHidden:self.hidenavi animated:NO];
}
- (IBAction)onPrintClick:(id)sender {
    
    
  //  UIAlertView * waitalert = [RAUtils waiting_alert:@"Please wait..." title:@"preparing print..."];
    
    UIPrintInteractionController* airPrinterController=[UIPrintInteractionController sharedPrintController];
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];
    printInfo.outputType = UIPrintInfoOutputGeneral;
    
    printInfo.orientation = UIPrintInfoOrientationPortrait;
    printInfo.jobName = @"CoolVisitAirPrint";
    airPrinterController.printInfo = printInfo;
    airPrinterController.printingItem = self.content;
    airPrinterController.delegate = self;
    
    
    airPrinterController.showsNumberOfCopies=true;
    airPrinterController.showsPageRange = true;
    airPrinterController.showsPaperSelectionForLoadedPapers=true;
    
    
    [airPrinterController presentFromBarButtonItem:self.btnPrint
                                      animated:YES
                             completionHandler:
     ^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {
     }
     ];
    
    
//    
//    void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
//        if(completed && error)
//            DebugLog(@"Printing failed due to error in domain %@ with error code %lu. Localized description: %@, and failure reason: %@", error.domain, (long)error.code, error.localizedDescription, error.localizedFailureReason);
//    };
//    
//    AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
//    
//    UIPrinter *airPrinter = [UIPrinter printerWithURL:[NSURL URLWithString:appDelegate.printerURL] ];///*self.printer;*/
//    
//    
//    
//    
//    [[UIPrinter printerWithURL:[NSURL URLWithString:appDelegate.printerURL]] contactPrinter:^(BOOL available)
//     {
//         [waitalert dismissWithClickedButtonIndex:0 animated:FALSE];
//         
//         if (available&& appDelegate.printerURL.length>0)
//         {
//             
//             
//             [airPrinterController printToPrinter:airPrinter completionHandler:completionHandler];
//             DebugLog(@"AIRPRINTER AVAILABLE");
//         }
//         else
//         {
//             
//                          [airPrinterController presentFromRect:CGRectMake(0, 0, 300, 500) inView:self.view animated:YES completionHandler:
//             
//             
//             
//                           //        [printPicker presentAnimated:YES completionHandler:
//                           ^(UIPrintInteractionController *printerController, BOOL userDidSelect, NSError *error)
//                           {
//                               if (userDidSelect)
//                               {
//                                   NSString* sid= printerController.printInfo.printerID;
//                                   UIPrintPaper*paper=  printerController.printPaper;
//             
//                               }
//                           }];
//             
//             
//             DebugLog(@"AIRPRINTER NOT AVAILABLE");
//             
//             
//             
////             if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1)
////             {
////                 UIPrinterPickerController *printPicker = [UIPrinterPickerController printerPickerControllerWithInitiallySelectedPrinter:nil];
////                 //   [printPicker presentFromBarButtonItem:self.btnSubmitOrder animated:yes completionHandler:
////                 
////                 
////                 
////                 [ printPicker presentFromBarButtonItem:self.btnPrint animated:YES completionHandler:
////                  
////                  
////                  // [printPicker presentFromRect:CGRectMake(0, 0, 300, 500) inView:self.view animated:YES completionHandler:
////                  
////                  
////                  
////                  //        [printPicker presentAnimated:YES completionHandler:
////                  ^(UIPrinterPickerController *printerPicker, BOOL userDidSelect, NSError *error)
////                  {
////                      if (userDidSelect)
////                      {
////                          //User selected the item in the UIPrinterPickerController and got the printer details.
////                          
////                          [UIPrinterPickerController printerPickerControllerWithInitiallySelectedPrinter:printerPicker.selectedPrinter];
////                          
////                          //Here you will get the printer and printer details.ie,
////                          // printerPicker.selectedPrinter, printerPicker.selectedPrinter.displayName, printerPicker.selectedPrinter.URL etc. So you can display the printer name in your label text or button title.
////                          
////                          
////                          
////                          
////                          appDelegate.printerURL =printerPicker.selectedPrinter.URL.absoluteString;
////                          
////                          [self startAirPrintWithData:self.content];
////                          
////                      }
////                      else
////                      {
////                          
////                          
////                          //                          AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
////                          //                          if([appDelegate.mode isEqualToString:@"Trade Show Mode"]&& appDelegate.submit_order_logout)
////                          //                          {
////                          //
////                          //                              [((MainViewController*)appDelegate.main_vc) Loginout:false];
////                          //                          }
////                          //                          [self prepareReturn:nil];
////                          
////                          //[self.navigationController popViewControllerAnimated:true];
////                      }
////                  }];
////             }
//         }
//     }];
//    
    
    
}
- (IBAction)onActionClick:(id)sender {
   
    //NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    
    NSString *filePath = nil;
    if(!self.isLocalfile)
    {
    NSString *path = NSTemporaryDirectory();
    NSString* filename =self.filename;
    
   filePath= [path stringByAppendingPathComponent:filename];
    
    }
    else
        filePath = self.url;

    
    
  
    

    [self openFile:filePath];
}
- (IBAction)onSaveClick:(id)sender {
    
    //UIAlertControllerStyle两种类型UIAlertControllerStyleAlert类似UIAlertView
    //UIAlertControllerStyleActionSheet类似UIActionSheet
    UIAlertController *alertControl = [UIAlertController alertControllerWithTitle:@"Save pdf" message:nil preferredStyle:UIAlertControllerStyleAlert];
    //block代码块取代了delegate
  
    
    [alertControl addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        textField.text = self.save_name;
       
        
    }];
    
    UIAlertAction *actionOne = [UIAlertAction actionWithTitle:@"Save" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {
        
        UITextField *name = alertControl.textFields.firstObject;
        if(name.text.length==0)
        {
        [RAUtils message_alert:@"Cannot save without name. Save canceled." title:@"Name is missing" controller:self];
        }
        else
        {
            self.save_name = name.text;
                            self.btnsave.enabled =false;
          //  NSMutableDictionary * info =
            if(self.onSavePDF)
                self.onSavePDF(self.save_name,self.filename);
        }
    }];

    UIAlertAction *alertthree = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        DebugLog(@"Cancel");
    }];
    [alertControl addAction:actionOne];

    [alertControl addAction:alertthree];
    
    //UIAlertControllerStyle类型为UIAlertControllerStyleAlert可以添加addTextFieldWithConfigurationHandler:^(UITextField *textField)

    
    [self presentViewController:alertControl animated:YES completion:nil];
    
    
    
    
}

- (IBAction)onEmailClick:(id)sender {
    //NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = NSTemporaryDirectory();
    NSString* filename =self.filename;
    
    NSString *filePath = [path stringByAppendingPathComponent:filename];
    
    
    
    
    
    MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
    
    if(mc==nil)
    {
        //[RAUtils message_alert:@"You must create an email account first."  title:@"Send Email" controller:self];
        return;
    }
    mc.mailComposeDelegate = self;
    [mc setSubject:self.mail_subject];
    
    
    [mc setToRecipients:self.mail_to];
    
    
    if(self.mail_content==nil)
        self.mail_content=@"";
    
    NSString* htmlbody = [NSString stringWithFormat:@"<html><p>%@</p></html>",self.mail_content];
    
    [mc setMessageBody:htmlbody
                isHTML:YES];
    

    
    NSData *data = [NSData dataWithContentsOfFile:filePath];
    
    if(self.attachment_name.length>0)
        filename = self.attachment_name;
    [mc addAttachmentData:data mimeType:@"application/pdf" fileName:filename];
    [self presentModalViewController:mc animated:YES];
    
    return;
}


-(void)openFile: (NSString *) file_url  {
    
    NSURL *file_URL = [NSURL fileURLWithPath:file_url];
    
    if (file_URL != nil) {
        if (self.fileInteractionController == nil) {
            //_fileInteractionController = [[UIDocumentInteractionController alloc] init];
            
            
            _fileInteractionController = [UIDocumentInteractionController interactionControllerWithURL:file_URL];
            _fileInteractionController.delegate = self;
            //  [_fileInteractionController retain];//不适用ARC,记得RETAIN 使用ARC注释这一行
        }
        else
        {
            self.fileInteractionController.URL = file_URL;
        }
        
        // [self.fileInteractionController presentOpenInMenuFromRect:self.view.frame inView:self.view animated:YES];
        
        
        [self.fileInteractionController setName:self.mail_subject];
        
//        [self.fileInteractionController setAnnotation:<#(id _Nullable)#>;
        
        [self.fileInteractionController presentOptionsMenuFromBarButtonItem:self.btnshare animated:YES];
       // [self.fileInteractionController presentOptionsMenuFromRect:self.view.frame inView:self.view animated:YES];
        //        [self.fileInteractionController  presentPreviewAnimated:YES];
        
    }
}
//- (void) sendEmail:(NSString *)to cc:(NSString*)cc subject:(NSString*)subject body:(NSString*)body
//{
//    NSString* str = [NSString stringWithFormat:@"mailto:%@?cc=%@&subject=%@&body=%@",
//                     to, cc, subject, body];
//    str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
//    
//    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];
//    
//    
//}

#pragma mark methods for the UIDocumentInteractionControllerDelegate

- (void)documentInteractionControllerDidDismissOptionsMenu:(UIDocumentInteractionController *)controller
{
//    if (controller == self.fileInteractionController) {
//        self.fileInteractionController = nil;
//    }
}

- (void)previewDocumentWithURL:(NSURL*)url
{
    UIDocumentInteractionController* preview = [UIDocumentInteractionController interactionControllerWithURL:url];
    preview.delegate = self;
    [preview presentPreviewAnimated:YES];
    
}

- (void)documentInteractionControllerDidEndPreview:(UIDocumentInteractionController *)controller
{
    
}

- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller{
    return self;
}

- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController *)controller{
    return self.view.frame;
}

- (UIView *)documentInteractionControllerViewForPreview:(UIDocumentInteractionController *)controller{
    return self.view;
}
- (void)documentInteractionController:(UIDocumentInteractionController *)controller willBeginSendingToApplication:(nullable NSString *)application	 // bundle ID
{
    
}


#pragma mark - web view delegate
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    self.mum.hidden=true;
    
    
    if(self.onLoadSuccess)
        self.onLoadSuccess(self.url);
    
    if(self.autoPrint)
        [self startAirPrintWithData:self.content];
    
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
    
}
#pragma mark -MFMailComposeViewControllerDelegate delegate

- (void)mailComposeController:(MFMailComposeViewController*)controller
          didFinishWithResult:(MFMailComposeResult)result
                        error:(NSError*)error {
    switch (result)
    {
        case MFMailComposeResultCancelled:
            DebugLog(@"Mail send canceled...");
            break;
        case MFMailComposeResultSaved:
            DebugLog(@"Mail saved...");
            break;
        case MFMailComposeResultSent:
            DebugLog(@"Mail sent...");
            break;
        case MFMailComposeResultFailed:
            DebugLog(@"Mail send errored: %@...", [error localizedDescription]);
            break;
        default:
            break;
    }
    [self dismissModalViewControllerAnimated:YES];
}
/*
#pragma mark - Navigation

 In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
     Get the new view controller using [segue destinationViewController].
     Pass the selected object to the new view controller.
}
*/
- (void)startAirPrintWithData:(id )data
{


    UIAlertView * waitalert = [RAUtils waiting_alert:@"Please wait..." title:@"preparing print..."];

    UIPrintInteractionController* airPrinterController=[UIPrintInteractionController sharedPrintController];
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];
    printInfo.outputType = UIPrintInfoOutputGeneral;
    printInfo.orientation = UIPrintInfoOrientationPortrait;
    printInfo.jobName = @"CoolVisitAirPrint";
    airPrinterController.printInfo = printInfo;
    airPrinterController.printingItem = data;
    airPrinterController.delegate = self;


    airPrinterController.showsNumberOfCopies=true;
    airPrinterController.showsPageRange = true;
    airPrinterController.showsPaperSelectionForLoadedPapers=true;

    void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
        if(completed && error)
            DebugLog(@"Printing failed due to error in domain %@ with error code %lu. Localized description: %@, and failure reason: %@", error.domain, (long)error.code, error.localizedDescription, error.localizedFailureReason);
    };

    AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];

    UIPrinter *airPrinter = [UIPrinter printerWithURL:[NSURL URLWithString:appDelegate.printerURL] ];///*self.printer;*/




    [[UIPrinter printerWithURL:[NSURL URLWithString:appDelegate.printerURL]] contactPrinter:^(BOOL available)
     {
         [waitalert dismissWithClickedButtonIndex:0 animated:FALSE];
         
         if (available&& appDelegate.printerURL.length>0)
         {
             

             [airPrinterController printToPrinter:airPrinter completionHandler:completionHandler];
             DebugLog(@"AIRPRINTER AVAILABLE");
         }
         else
         {

             //             [airPrinterController presentFromRect:CGRectMake(0, 0, 300, 500) inView:self.view animated:YES completionHandler:
             //
             //
             //
             //              //        [printPicker presentAnimated:YES completionHandler:
             //              ^(UIPrintInteractionController *printerController, BOOL userDidSelect, NSError *error)
             //              {
             //                  if (userDidSelect)
             //                  {
             //                      NSString* sid= printerController.printInfo.printerID;
             //                      UIPrintPaper*paper=  printerController.printPaper;
             //
             //                  }
             //              }];


             DebugLog(@"AIRPRINTER NOT AVAILABLE");



             if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1)
             {
                 UIPrinterPickerController *printPicker = [UIPrinterPickerController printerPickerControllerWithInitiallySelectedPrinter:nil];
              //   [printPicker presentFromBarButtonItem:self.btnSubmitOrder animated:yes completionHandler:



                [ printPicker presentFromBarButtonItem:self.btnshare animated:YES completionHandler:


                // [printPicker presentFromRect:CGRectMake(0, 0, 300, 500) inView:self.view animated:YES completionHandler:



                  //        [printPicker presentAnimated:YES completionHandler:
                  ^(UIPrinterPickerController *printerPicker, BOOL userDidSelect, NSError *error)
                  {
                      if (userDidSelect)
                      {
                          //User selected the item in the UIPrinterPickerController and got the printer details.

                          [UIPrinterPickerController printerPickerControllerWithInitiallySelectedPrinter:printerPicker.selectedPrinter];

                          //Here you will get the printer and printer details.ie,
                          // printerPicker.selectedPrinter, printerPicker.selectedPrinter.displayName, printerPicker.selectedPrinter.URL etc. So you can display the printer name in your label text or button title.




                          appDelegate.printerURL =printerPicker.selectedPrinter.URL.absoluteString;

                          [self startAirPrintWithData:data];

                      }
                      else
                      {


//                          AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
//                          if([appDelegate.mode isEqualToString:@"Trade Show Mode"]&& appDelegate.submit_order_logout)
//                          {
//
//                              [((MainViewController*)appDelegate.main_vc) Loginout:false];
//                          }
//                          [self prepareReturn:nil];

                          //[self.navigationController popViewControllerAnimated:true];
                      }
                  }];
             }
         }
     }];



}

#pragma mark - UIPrintInteractionControllerDelegate
- (UIPrintPaper *)printInteractionController:(UIPrintInteractionController *)printInteractionController choosePaper:(NSArray<UIPrintPaper *> *)paperList
{

    ;

    //    (int) width = 29700
    //    Printing description of (*( (int *)0x7caa3a40)):
    //    (int) height = 42000
    //设置纸张大小

    CGSize paperSize=[PDFUtils QueryPDFSizeFromData:self.content];
    for(UIPrintPaper* paper in paperList)
    {
        if (CGSizeEqualToSize(paper.paperSize, paperSize))
            return paper;

    }
    
    UIPrintPaper * pp=[[UIPrintPaper alloc] init];
    
//    CGSize paperSize = CGSizeMake(612, 792);
    UIPrintPaper * p=[UIPrintPaper bestPaperForPageSize:paperSize withPapersFromArray:paperList];
    return p;
}
- (void)printInteractionControllerWillPresentPrinterOptions:(UIPrintInteractionController *)printInteractionController
{

}
- (void)printInteractionControllerDidPresentPrinterOptions:(UIPrintInteractionController *)printInteractionController
{

}
- (void)printInteractionControllerWillDismissPrinterOptions:(UIPrintInteractionController *)printInteractionController
{

}
- (void)printInteractionControllerDidDismissPrinterOptions:(UIPrintInteractionController *)printInteractionController
{

}

- (void)printInteractionControllerWillStartJob:(UIPrintInteractionController *)printInteractionController
{

}
- (void)printInteractionControllerDidFinishJob:(UIPrintInteractionController *)printInteractionController
{

//    AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
//    if([appDelegate.mode isEqualToString:@"Trade Show Mode"]&& appDelegate.submit_order_logout)
//    {
//
//        [((MainViewController*)appDelegate.main_vc) Loginout:false];
//    }
//
//    [self prepareReturn:nil];

    if(self.autoPrint)
    [self.navigationController popViewControllerAnimated:true];
}
@end