I see in "object library" pdfView is there, but, when I click on .XIB it got disappers.How can I use this for iPhone or IPad development? Plaese provide me any example links.Thanks.
Note: Plaese do not tell me to use any 3rd party lib,because I'm already refering two.This i don't want ot use going forword.
PDFView is only for cocoa(OSX) not for iOS.
A PDFView object encapsulates the functionality of PDF Kit into a single widget that you can add to your application
PDFKit only available in OSX.
In iOS to display pdf pages you don't want use any third party libraries, you can draw the pdf view by creating a custom view override the draw something like
Get the pdf document
NSString *pathToPdfDoc = [[NSBundle mainBundle] pathForResource:#"aa" ofType:#"pdf"];
NSURL *pdfUrl = [NSURL fileURLWithPath:pathToPdfDoc];
document = CGPDFDocumentCreateWithURL((CFURLRef)pdfUrl);
currentPage = 1;
In drawRect
-(void)drawRect:(CGRect)rect
{
CGPDFPageRef page = CGPDFDocumentGetPage(document, currentPage);
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextSaveGState(ctx);
CGContextTranslateCTM(ctx, 0.0, [self bounds].size.height);
CGContextScaleCTM(ctx, 1.0, -1.0);
CGContextConcatCTM(ctx, CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, [self bounds], 0, true));
CGContextDrawPDFPage(ctx, page);
CGContextRestoreGState(ctx);
}
Are you posting two questions that are pretty much the same?
A couple of minutes ago you posted this: Object library not visible when click on .XIB in xcode ios
My answer still stands, you have chosen a OSX xib NOT an iOS xib.
If you want to show a PDF in an iOS app, you could add it to a UIWebView. Have a look at this question for details: iPhone : can we open pdf file using UIWebView?
Related
Please read my scenario carefully,
I have one UITextView and one UIImageView bottom of TextView.
Each time there will be dynamic content in TextView and accordingly that, I am asking User to make a signature and it will be displayed as an image in bottom ImageView.
Now the requirement is I have to pass these details on the server along with Signature in one PDF file, So I have to create PDF file which contains both TextView text and ImageView image.
Note: TextView is containing Html text also, so it should show in the same format in PDF also.
Check below Images as required and current pdfs.
This is required PDF
This is current PDF
Only Put the code which can be helpful for both HTML support and Image merge with text. Please don't show simple PDF creation as I have done it already.
you don't need a 3rd party library, Cocoa and Cocoa touch have rich PDF support. I've stubbed you out a little start, do this in your viewController. There may be a few small errors, Ive been using swift for a couple of years now but I used my very rusty objC here because you tagged the question that way. Let me know any problems, good luck
-(NSData *)drawPDFdata{
// default pdf..
// 8.5 X 11 inch #72dpi
// = 612 x 792
CGRect rct = {{0.0 , 0.0 } , {612.0 , 792.0}}
NSMutableData *pdfData = [[NSMutableData alloc]init];
UIGraphicsBeginPDFContextToData(pdfData, rct, nil);
CGContextRef pdfContext = UIGraphicsGetCurrentContext();
UIGraphicsBeginPDFPage();
//textView drawing
CGContextSaveGState(pdfContext);
CGContextConcatCTM(pdfContext, CGAffineTransformMakeTranslation(50.0,50.0));//this is just an offset for the textView drawing. You will want to play with the values, espeecially if supporting multiple screen sizes you might tranform the scale as well..
[textView.layer renderInContext:pdfContext]
CGContextRestoreGState(pdfContext);
//imageView drawing
CGContextSaveGState(pdfContext);
CGContextConcatCTM(pdfContext, CGAffineTransformMakeTranslation(50.0,50.0)); //this is just an offset for the imageView drawing. Thee same stuff applies as above..
[imageView.layer renderInContext:pdfContext]
CGContextRestoreGState(pdfContext);
//cleanup
UIGraphicsEndPDFContext();
return pdfData;
}
here's a couple of client functions to use this NSData
//ways to use the pdf Data
-(Bool)savePDFtoPath: (NSString *)path {
return [ [self drawPDFdata] writeToFile:path atomically:YES] ;
}
//requires Quartz framework.. (can be drawn straight to a UIView)
// note you MAY owe a CGPDFDocumentRelease() on the result of this function (sorry i've not used objC in a couple of years...)
-(CGPDFDocument *)createPDFdocument {
NSData *data = [self drawPDFdata];
CGDataProviderRef provider = CGDataProviderCreateWithData(NULL , data , sizeof(data) ,NULL);
CGPDFDocument result = CGPDFDocumentCreateWithProvider(provider);
CGDataProviderRelease(provider); //not sure if this is still required under ARC?? (def not in swift)
return result;
}
Try this useful third party library :
https://github.com/iclems/iOS-htmltopdf
Use this function for your problem :
+ (id)createPDFWithHTML:(NSString*)HTML pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock;
I'm using the following code to display a PDF inside a UIView
Its a simple application, displaying a single PDF (which is all I need) and I"m handling zooming separately: The problem I'm having with this is when the iPad changes to Landscape everything is distorted - any help as to where I should look ? / what i should do to handle the orientation issue ?
- (void)drawRect:(CGRect)rect
{
CGContextRef ctx = UIGraphicsGetCurrentContext();
//PDF might be transparent, assume white paper - set White Background
[[UIColor whiteColor] set];
CGContextFillRect(ctx, rect);
//Flip coordinates
CGContextGetCTM(ctx);
CGContextScaleCTM(ctx, 1, -1);
CGContextTranslateCTM(ctx, 0, -rect.size.height);
//PDF File Path
NSURL *pdfURL = [[NSBundle mainBundle] URLForResource:#"TEST" withExtension:#"pdf"];
CGPDFDocumentRef pdf = CGPDFDocumentCreateWithURL((__bridge CFURLRef)pdfURL);
CGPDFPageRef page1 = CGPDFDocumentGetPage(pdf, 1);
//Get the rectangle of the cropped inside
CGRect mediaRect = CGPDFPageGetBoxRect(page1, kCGPDFCropBox);
CGContextScaleCTM(ctx, rect.size.width / mediaRect.size.width,
rect.size.height / mediaRect.size.height);
//Draw PDF
CGContextDrawPDFPage(ctx, page1);
CGPDFDocumentRelease(pdf);
}
Hi For Anybody Who may be interested in this. . .
This may be the best way to do it :
Supporting two orientations with separate view controllers in iOS
The following question discusses how to register to device orientation change, When a change in orientation is detected, a modal View is pushed -displaying the PDF with dimensions
The Other options may be as follows : when you initialize the UIView decide how you want it to react when the orientation changes
UIView.contentMode = UIViewContentModeScaleAspectFill;
Play around with the various UIViewContentMode... : to achieve the best effect for you
The current one allows the PDF to be redrawn maintaining its Aspect ration and filling the entire size of the screen:so it cuts of about half the PDF - - -
Basically, I'm trying to display an application using the private API SBAppContextHostManager of SpringBoard. So far, I have this code:
SBAppContextHostManager *app = [[objc_getClass("SBAppContextHostManager") alloc] init];
[app setAppBundleID:#"com.apple.springboard"]; // just as an example
[app enableHostingForRequester:#"uniqueID" priority:1];
[app orderRequesterFront:#"uniqueID"];
SBHostWrapperView *view = [app hostViewForRequester:#"uniqueID"];
and after which I call
UIGraphicsBeginImageContextWithOptions([UIScreen mainScreen].bounds.size, YES, [UIScreen mainScreen].scale);
CGContextRef c = UIGraphicsGetCurrentContext();
CGContextSetAllowsAntialiasing(c, YES);
[view.layer renderInContext:c];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
to grab a UIImage of the view containing the application. However, the output of this UIImage is completely blank, which leads me to think that my calls to SBAppContextManager are incorrect, thus leading to a blank SBHostWrapperView. Therefore, how should I display an application in this way?
If you are trying to get a preview of the application, rendering an SBHostWrapperView won't work. You see, SBHostWrapperViews don't copy the application's render output, it simply provides a different location on the screen for the app to render to.
Instead, you can use - (SBFullscreenZoomView*)systemGestureSnapshotWithIOSurfaceSnapshotOfApp:(SBApplication*)arg1 includeStatusBar:(BOOL)arg2; in the SBUIController class.
That method returns an SBFullscreenZoomView, a subclass of UIView, with a snapshot of the app provided in arg1. You can use the second snippet of code you provided to get a UIImage of the SBFullscreenZoomView. That should do what you are asking, providing you with a screenshot of only a specific application.
I want to generate a good-looking PDF in my iOS 6 app.
I've tried:
UIView render in context
Using CoreText
Using NSString drawInRect
Using UILabel drawRect
Here is a code example:
-(CGContextRef) createPDFContext:(CGRect)inMediaBox path:(NSString *) path
{
CGContextRef myOutContext = NULL;
NSURL * url;
url = [NSURL fileURLWithPath:path];
if (url != NULL) {
myOutContext = CGPDFContextCreateWithURL ((__bridge CFURLRef) url,
&inMediaBox,
NULL);
}
return myOutContext;
}
-(void)savePdf:(NSString *)outputPath
{
if (!pageViews.count)
return;
UIView * first = [pageViews objectAtIndex:0];
CGContextRef pdfContext = [self createPDFContext:CGRectMake(0, 0, first.frame.size.width, first.frame.size.height) path:outputPath];
for(UIView * v in pageViews)
{
CGContextBeginPage (pdfContext,nil);
CGAffineTransform transform = CGAffineTransformIdentity;
transform = CGAffineTransformMakeTranslation(0, (int)(v.frame.size.height));
transform = CGAffineTransformScale(transform, 1, -1);
CGContextConcatCTM(pdfContext, transform);
CGContextSetFillColorWithColor(pdfContext, [UIColor whiteColor].CGColor);
CGContextFillRect(pdfContext, v.frame);
[v.layer renderInContext:pdfContext];
CGContextEndPage (pdfContext);
}
CGContextRelease (pdfContext);
}
The UIViews that are rendered only contain a UIImageView + a bunch of UILabels (some with and some without borders).
I also tried a suggestion found on stackoverflow: subclassing UILabel and doing this:
- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx {
BOOL isPDF = !CGRectIsEmpty(UIGraphicsGetPDFContextBounds());
if (!layer.shouldRasterize && isPDF)
[self drawRect:self.bounds]; // draw unrasterized
else
[super drawLayer:layer inContext:ctx];
}
But that didn't change anything either.
No matter what I do, when opening the PDF in Preview the text parts are selectable as a block, but not character per character, and zooming the pdf shows it is actually a bitmap image.
Any suggestions?
This Tutorial From Raywenderlich Saved my Day.Hope it will work for you too.
http://www.raywenderlich.com/6818/how-to-create-a-pdf-with-quartz-2d-in-ios-5-tutorial-part-2
My experience when I did this last year was that Apple didn't provide any library to do it. I ended up importing an open source C library (libHaru). Then I added a function for outputting to it in each class in my view hierarchy. Any view with subviews would call render on its subviews. My UILabels, UITextFields, UIImageViews, UISwitches etc would output their content either as text or graphics accordingly I also rendered background colors for some views.
It wasn't very daunting, but libHaru gave me some problems with fonts so iirc I ended up just using the default font and font size.
It works good with UILabels except that you have to work around a bug:
Rendering a UIView into a PDF as vectors on an iPad - Sometimes renders as bitmap, sometimes as vectors
I know this question has been asked several times, but I couldn't solve it for my particular case. CGContextDrawPDFPage is indicated as a leak in the leak instrument. Also when this segment of code is run the app crashes which I'm really sure is due to memory issues.
pdfURLDocument = [[NSURL alloc] initFileURLWithPath: [docsDir stringByAppendingPathComponent:documentName]];
pdfDocument = CGPDFDocumentCreateWithURL((CFURLRef)pdfURLDocument);
[pdfURLDocument release];
page = CGPDFDocumentGetPage(pdfDocument, 1);
CGPDFPageRetain(page);
// determine the size of the PDF page
CGRect pageRect = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
pdfScaleWidth = (1/((CGFloat) gridSizeDocument)) * self.frame.size.width/pageRect.size.width;
pdfScaleHeight = (1/((CGFloat) gridSizeDocument)) * self.frame.size.height/pageRect.size.height;
pageRect.size = CGSizeMake(pageRect.size.width*pdfScaleWidth, pageRect.size.height*pdfScaleHeight);
// Create a low res image representation of the PDF page
UIGraphicsBeginImageContext(pageRect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
// First fill the background with white.
CGContextSetRGBFillColor(context, 1.0,1.0,1.0,1.0);
CGContextFillRect(context,pageRect);
CGContextSaveGState(context);
// Flip the context so that the PDF page is rendered
// right side up.
CGContextTranslateCTM(context, 0.0, pageRect.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
// Scale the context so that the PDF page is rendered
// at the correct size for the zoom level.
CGContextScaleCTM(context, pdfScaleWidth, pdfScaleHeight);
CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
CGContextSetRenderingIntent(context, kCGRenderingIntentDefault);
CGContextDrawPDFPage(context, page);
CGContextRestoreGState(context);
backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
CGPDFPageRelease(page);
Also, I included CGPDFPageRelease(page); in the dealloc method. Also, it might be helpful to add that it works fine for small documents, but only crashes on large ones. Memory leaks still persist in the smaller ones, however.
I know this is an old question, but two observations:
You need to release your pdfDocument:
CGPDFDocumentRelease(pdfDocument);
You should not release the page with CGPDFPageRelease(page), though, because that is an autoreleased object and you don't own it (unless, of course, you retained it with CGPDFPageRetain).
If you use the static analyzer ("Analyze" on Xcode's "Product" menu), it should point out both of those issues.
The fundamental problem is that CGContextDrawPDFPage leaks in iOS versions prior to 6.0.
The release needs to come after the page has been used, not before. So first, move CGPDFPageRelease(page) to last in this code block and see if that helps. Also, the problem could have something to do with the CGPDFDocumentRef stored in the pdf variable. If the above doesn't help, it would be good if you show how you obtain the reference, and where you retain and release it.