在IOS中设置PDF文件的密码

Question

如何在生成时为PDF文件设置密码所以用户在从电子邮件下载后用密码打开文件？任何帮助都会被appriecaited.thanks提前

Answer 1

CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR("My PDF File"));
CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("My Name"));
///
CFDictionarySetValue(myDictionary, kCGPDFContextUserPassword, CFSTR("userpassword"));
CFDictionarySetValue(myDictionary, kCGPDFContextOwnerPassword, CFSTR("ownerpassword"));
///
pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary); 

选中此Creating Password Protected PDF in Objective-C