Jak przekonwertować UIView na PDF w systemie iOS?
Istnieje wiele zasobów na temat wyświetlania plików PDF w aplikacji UIView
. Obecnie pracuję nad stworzeniem pliku PDF z UIViews
.
Na przykład, mam UIView
, z podwidywaniami jak Textviews, UILabels
, UIImages
, więc jak mogę przekonwertować duży UIView
jako całość, w tym wszystkie jego Podglądy i podsubviews do pliku PDF?
The problem I am twarzą w twarz jest to, że treść, którą chcę zapisać do pliku jako PDF, jest dużo. Jeśli napiszę je do pliku PDF kawałek po kawałku, będzie to ogromna praca.
Dlatego szukam sposobu na zapisanie UIViews
do plików PDF lub nawet bitmap.
Próbowałem kodu źródłowego skopiowanego z innych Q / A w Stack Overflow. Ale daje mi tylko pusty plik PDF o rozmiarze UIView
.
-(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
{
// Creates a mutable data object for updating with binary data, like a byte array
NSMutableData *pdfData = [NSMutableData data];
// Points the pdf converter to the mutable data object and to the UIView to be converted
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil);
UIGraphicsBeginPDFPage();
// draws rect to the view and thus this is captured by UIGraphicsBeginPDFContextToData
[aView drawRect:aView.bounds];
// remove PDF rendering context
UIGraphicsEndPDFContext();
// Retrieves the document directories from the iOS device
NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString* documentDirectory = [documentDirectories objectAtIndex:0];
NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
// instructs the mutable data object to write its context to a file on disk
[pdfData writeToFile:documentDirectoryFilename atomically:YES];
NSLog(@"documentDirectoryFileName: %@",documentDirectoryFilename);
}
Proszę o pomoc. Dzięki. 5 answers
Zauważ, że poniższa metoda tworzy tylko bitmapę widoku; nie tworzy rzeczywistej typografii.
(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
{
// Creates a mutable data object for updating with binary data, like a byte array
NSMutableData *pdfData = [NSMutableData data];
// Points the pdf converter to the mutable data object and to the UIView to be converted
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil);
UIGraphicsBeginPDFPage();
CGContextRef pdfContext = UIGraphicsGetCurrentContext();
// draws rect to the view and thus this is captured by UIGraphicsBeginPDFContextToData
[aView.layer renderInContext:pdfContext];
// remove PDF rendering context
UIGraphicsEndPDFContext();
// Retrieves the document directories from the iOS device
NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString* documentDirectory = [documentDirectories objectAtIndex:0];
NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
// instructs the mutable data object to write its context to a file on disk
[pdfData writeToFile:documentDirectoryFilename atomically:YES];
NSLog(@"documentDirectoryFileName: %@",documentDirectoryFilename);
}
Upewnij się również, że importujesz: Kwarcore/QuartzCore.h
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2014-06-30 13:15:08
Dodatkowo, jeśli ktoś jest zainteresowany, oto Kod Swift 3:
func createPdfFromView(aView: UIView, saveToDocumentsWithFileName fileName: String)
{
let pdfData = NSMutableData()
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil)
UIGraphicsBeginPDFPage()
guard let pdfContext = UIGraphicsGetCurrentContext() else { return }
aView.layer.render(in: pdfContext)
UIGraphicsEndPDFContext()
if let documentDirectories = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first {
let documentsFileName = documentDirectories + "/" + fileName
debugPrint(documentsFileName)
pdfData.write(toFile: documentsFileName, atomically: true)
}
}
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2016-08-03 21:48:47
Jeśli ktoś jest zainteresowany, oto Kod Swift 2.1:
func createPdfFromView(aView: UIView, saveToDocumentsWithFileName fileName: String)
{
let pdfData = NSMutableData()
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil)
UIGraphicsBeginPDFPage()
guard let pdfContext = UIGraphicsGetCurrentContext() else { return }
aView.layer.renderInContext(pdfContext)
UIGraphicsEndPDFContext()
if let documentDirectories = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first {
let documentsFileName = documentDirectories + "/" + fileName
debugPrint(documentsFileName)
pdfData.writeToFile(documentsFileName, atomically: true)
}
}
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2015-12-15 11:59:38
Spowoduje to wygenerowanie pliku PDF z UIView i otwarcie okna dialogowego drukowania, objective C.
Dołącz - (IBAction)PrintPDF:(id)sender
do przycisku na ekranie.
Add #import <QuartzCore/QuartzCore.h>
framework
Plik H
@interface YourViewController : UIViewController <MFMailComposeViewControllerDelegate,UIPrintInteractionControllerDelegate>
{
UIPrintInteractionController *printController;
}
- (IBAction)PrintPDF:(id)sender;
M Plik
-(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
{
NSMutableData *pdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil);
UIGraphicsBeginPDFPage();
CGContextRef pdfContext = UIGraphicsGetCurrentContext();
[aView.layer renderInContext:pdfContext];
UIGraphicsEndPDFContext();
NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString* documentDirectory = [documentDirectories objectAtIndex:0];
NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
NSString *file = [documentDirectory stringByAppendingPathComponent:@"yourPDF.pdf"];
NSURL *urlPdf = [NSURL fileURLWithPath: file];
[pdfData writeToFile:documentDirectoryFilename atomically:YES];
NSLog(@"documentDirectoryFileName: %@",documentDirectoryFilename);
}
- (IBAction)PrintPDF:(id)sender
{
[self createPDFfromUIView:self.view saveToDocumentsWithFileName:@"yourPDF.pdf"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"yourPDF.pdf"];
NSData *myData = [NSData dataWithContentsOfFile: path];
UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
if(pic && [UIPrintInteractionController canPrintData: myData] ) {
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = [path lastPathComponent];
printInfo.duplex = UIPrintInfoDuplexLongEdge;
pic.printInfo = printInfo;
pic.showsPageRange = YES;
pic.printingItem = myData;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) = ^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {
//self.content = nil;
if(!completed && error){
NSLog(@"Print Error: %@", error);
}
};
[pic presentAnimated:YES completionHandler:completionHandler];
}
}
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2017-03-31 09:08:05
Nie wiem dlaczego, ale odpowiedź casilica daje mi pusty ekran na iOS6. 1. Poniższy kod działa.
-(NSMutableData *)createPDFDatafromUIView:(UIView*)aView
{
// Creates a mutable data object for updating with binary data, like a byte array
NSMutableData *pdfData = [NSMutableData data];
// Points the pdf converter to the mutable data object and to the UIView to be converted
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil);
UIGraphicsBeginPDFPage();
CGContextRef pdfContext = UIGraphicsGetCurrentContext();
// draws rect to the view and thus this is captured by UIGraphicsBeginPDFContextToData
[aView.layer renderInContext:pdfContext];
// remove PDF rendering context
UIGraphicsEndPDFContext();
return pdfData;
}
-(NSString*)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
{
// Creates a mutable data object for updating with binary data, like a byte array
NSMutableData *pdfData = [self createPDFDatafromUIView:aView];
// Retrieves the document directories from the iOS device
NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString* documentDirectory = [documentDirectories objectAtIndex:0];
NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
// instructs the mutable data object to write its context to a file on disk
[pdfData writeToFile:documentDirectoryFilename atomically:YES];
NSLog(@"documentDirectoryFileName: %@",documentDirectoryFilename);
return documentDirectoryFilename;
}
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2013-04-20 16:06:25