今天我搜索了一段时间,以便在iOS 7应用程序中以编程方式粘贴PDF文件中的文本。遗憾的是,没有简单的方法来编辑PDF表单。您可以使用付费库,但这不是我的选择。所以我通过使用CGPDF粘贴指定坐标处的文本来完成它。 这就是我这样做的方式:
- (void)editPDF
{
NSString* fileName = @"new.pdf";
NSArray *arrayPaths =
NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory,
NSUserDomainMask,
YES);
NSString *path = [arrayPaths objectAtIndex:0];
NSString* pdfFileName = [path stringByAppendingPathComponent:fileName];
NSString *templatePath = [[NSBundle mainBundle] pathForResource:@"mytemplate" ofType:@"pdf"];
//create empty pdf file;
UIGraphicsBeginPDFContextToFile(pdfFileName, CGRectMake(0, 0, 792, 612), nil);
CFURLRef url = CFURLCreateWithFileSystemPath (NULL, (CFStringRef)templatePath, kCFURLPOSIXPathStyle, 0);
//open template file
CGPDFDocumentRef templateDocument = CGPDFDocumentCreateWithURL(url);
CFRelease(url);
//get amount of pages in template
size_t count = CGPDFDocumentGetNumberOfPages(templateDocument);
//for each page in template
for (size_t pageNumber = 1; pageNumber <= count; pageNumber++) {
//get bounds of template page
CGPDFPageRef templatePage = CGPDFDocumentGetPage(templateDocument, pageNumber);
CGRect templatePageBounds = CGPDFPageGetBoxRect(templatePage, kCGPDFCropBox);
//create empty page with corresponding bounds in new document
UIGraphicsBeginPDFPageWithInfo(templatePageBounds, nil);
CGContextRef context = UIGraphicsGetCurrentContext();
//flip context due to different origins
CGContextTranslateCTM(context, 0.0, templatePageBounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
//copy content of template page on the corresponding page in new file
CGContextDrawPDFPage(context, templatePage);
//flip context back
CGContextTranslateCTM(context, 0.0, templatePageBounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
//create dictionary for font
UIFont *font = [UIFont fontWithName: @"Courier" size:12];
NSDictionary *attribdict = [[NSDictionary alloc] initWithObjectsAndKeys: font, NSFontAttributeName, nil];
/* Here you can do any drawings */
[@"Test" drawAtPoint:CGPointMake(200, 300) withAttributes:attribdict];
}
CGPDFDocumentRelease(templateDocument);
UIGraphicsEndPDFContext();
[self showPDFFile];
}
-(void)showPDFFile
{
NSString* fileName = @"new.pdf";
NSArray *arrayPaths =
NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory,
NSUserDomainMask,
YES);
NSString *path = [arrayPaths objectAtIndex:0];
NSString* pdfFileName = [path stringByAppendingPathComponent:fileName];
UIWebView* webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 1024, 768)];
NSURL *url = [NSURL fileURLWithPath:pdfFileName];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webView setScalesPageToFit:YES];
[webView loadRequest:request];
[self.view addSubview:webView];
}
您只需要找到要粘贴文本的点的CGPoint,并为每个文本粘贴一行。
非常有用的链接:how to edit a PDF in objective-c?
如果有人有更好的解决方案,如果他/她能回答并发布,我将不胜感激。