iOS Add page number on bottom of each PDF page

[fradiocey]

Hi,

Anyone here have use this NDHTML to PDF before, it works perfectly, but how to add page number of each PDF file,I manage to figure NSLog but I don't have any clues to put at the PDF canvas. Im new in objective-c, your help is really appreciated,

Thank You.


References:

https://github.com/iclems/iOS-htmltopdf
https://github.com/moderna/cordova-plugin-html2pdf

[*]#import"Html2pdf.h"
[*]@interface Html2pdf (Private) 
[*]- (BOOL) saveHtml:(NSString*)html asPdf:(NSString*)filePath; 
[*]@end
[*]@interface UIPrintPageRenderer (PDF) 
[*]- (NSData*) printToPDF; 
[*]@end
[*]@implementation Html2pdf 
[*]@synthesize command, filePath, pageSize, pageMargins, documentController; 
[*]- (void)create:(CDVInvokedUrlCommand*)command 
[*]{ 
[*] self.command = command; 
[*] NSArray* arguments = command.arguments; 
[*] NSLog(@"Creating pdf from html has been started."); 
[*] NSString* html = [arguments objectAtIndex:0]; 
[*] self.filePath = [[arguments objectAtIndex:1] stringByExpandingTildeInPath]; 
[*] / 
[*] NSString* wwwFilePath = [[NSBundle mainBundle] pathForResource:@"www" ofType:nil]; 
[*] NSURL* baseURL = [NSURL fileURLWithPath:wwwFilePath]; 
[*] / 
[*] self.pageSize = kPaperSizeA4; 
[*] self.pageMargins = UIEdgeInsetsMake(10, 40, 50, 40); 
[*] / 
[*] UIWebView* webPage = [[UIWebView alloc] init]; 
[*] webPage.delegate = self; 
[*] webPage.frame = CGRectMake(0, 0, 1, 1); / 
[*] webPage.alpha = 0.0; / 
[*] [self.webView.superview addSubview:webPage]; 
[*] [webPage loadHTMLString:html baseURL:baseURL]; 
[*]} 
[*]- (void)success 
[*]{ 
[*] NSString* resultMsg = [NSString stringWithFormat:@"HTMLtoPDF did succeed (%@)", self.filePath]; 
[*] NSLog(@"%@",resultMsg); 
[*] / 
[*] CDVPluginResult* result = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK 
[*] messageAsString:[resultMsg stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; 
[*] / 
[*] [self writeJavascript:[result toSuccessCallbackString:command.callbackId]]; 
[*]} 
[*]- (void)error:(NSString*)message 
[*]{ 
[*] NSString* resultMsg = [NSString stringWithFormat:@"HTMLtoPDF did fail (%@)", message]; 
[*] NSLog(@"%@",resultMsg); 
[*] / 
[*] CDVPluginResult* result = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR 
[*] messageAsString:[resultMsg stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; 
[*] / 
[*] [self writeJavascript:[result toErrorCallbackString:command.callbackId]]; 
[*]} 
[*]- (void)webViewDidFinishLoad:(UIWebView *)webView 
[*]{ 
[*] NSLog(@"Html2Pdf webViewDidFinishLoad"); 
[*] UIPrintPageRenderer *render = [[UIPrintPageRenderer alloc] init]; 
[*] [render addPrintFormatter:webView.viewPrintFormatter startingAtPageAtIndex:0]; 
[*] CGRect printableRect = CGRectMake(self.pageMargins.left, 
[*] self.pageMargins.top, 
[*] self.pageSize.width - self.pageMargins.left - self.pageMargins.right, 
[*] self.pageSize.height - self.pageMargins.top - self.pageMargins.bottom); 
[*] CGRect paperRect = CGRectMake(0, 0, self.pageSize.width, self.pageSize.height); 
[*] [render setValue:[NSValue valueWithCGRect:paperRect] forKey:@"paperRect"]; 
[*] [render setValue:[NSValue valueWithCGRect:printableRect] forKey:@"printableRect"]; 
[*] if (filePath) { 
[*] [[render printToPDF] writeToFile: filePath atomically: YES]; 
[*] } 
[*] / 
[*] [webView stopLoading]; 
[*] webView.delegate = nil; 
[*] [webView removeFromSuperview]; 
[*] webView = nil; 
[*] / 
[*] [self success]; 
[*] / 
[*] NSURL* url = [NSURL fileURLWithPath:filePath]; 
[*] self.documentController = [UIDocumentInteractionController interactionControllerWithURL:url]; 
[*] documentController.delegate = self; 
[*] UIView* view = self.webView.superview; 
[*] CGRect rect = view.frame; / 
[*] rect.size.height *= 0.02; 
[*] BOOL isValid = [documentController presentOpenInMenuFromRect:rect inView:view animated:YES]; 
[*] if (!isValid) { 
[*] NSString* messageString = [NSString stringWithFormat:@"No PDF reader was found on your device. Please download a PDF reader (eg. iBooks or Acrobat)."]; 
[*] UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:messageString delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
[*] [alertView show]; 
[*] / 
[*] } 
[*]} 
[*]- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error 
[*]{ 
[*] NSLog(@"webViewDidFailLoadWithError"); 
[*] / 
[*] [self error:[error description]]; 
[*]} 
[*]@end
[*]@implementation UIPrintPageRenderer (PDF) 
[*]- (NSData*) printToPDF 
[*]{ 
[*] NSMutableData *pdfData = [NSMutableData data]; 
[*] UIGraphicsBeginPDFContextToData( pdfData, self.paperRect, nil ); 
[*] [self prepareForDrawingPages: NSMakeRange(0, self.numberOfPages)]; 
[*] CGRect bounds = UIGraphicsGetPDFContextBounds(); 
[*] for ( int i = 0 ; i < self.numberOfPages ; i++ ) 
[*] { 
[*] UIGraphicsBeginPDFPage(); 
[*] int aInteger = i; 
[*] NSLog(@"page: %i", aInteger); 
[*] [self drawPageAtIndex: i inRect: bounds]; 
[*] } 
[*] UIGraphicsEndPDFContext(); 
[*] return pdfData; 
[*]} 
[*]@end

 

[maflynn]

[MOD NOTE]
Poll moved as it was superfluous.