Question

我的podspec中有一个提到资源的私有pod，包括故事板和pdf资源（矢量图像）所有资源都按预期复制，我可以使用NSBundle(forClass:)访问它们有没有办法从使用此pod作为框架的项目创建UIImages？在我的项目中，XCode在构建时从pdf生成@ 1，x2，x3 png，它们位于资产目录中并被称为＆＃34;单个向量＆＃34;。但是如何实现框架呢？

Answer 1

是！

-(void)splitPDF:(NSURL *)sourcePDFUrl withOutputName:(NSString *)outputBaseName intoDirectory:(NSString *)directory
{
CGPDFDocumentRef SourcePDFDocument = CGPDFDocumentCreateWithURL((__bridge CFURLRef)sourcePDFUrl);
size_t numberOfPages = CGPDFDocumentGetNumberOfPages(SourcePDFDocument);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *filePathAndDirectory = [documentsDirectory stringByAppendingPathComponent:directory];

NSError *error;

if (![[NSFileManager defaultManager] createDirectoryAtPath:filePathAndDirectory
withIntermediateDirectories:NO
attributes:nil
error:&error])
{

NSLog(@”Create directory error: %@”, error);

return;

}

for(int currentPage = 1; currentPage <= numberOfPages; currentPage ++ )
{

CGPDFPageRef SourcePDFPage = CGPDFDocumentGetPage(SourcePDFDocument, currentPage);

// CoreGraphics: MUST retain the Page-Refernce manually
CGPDFPageRetain(SourcePDFPage);

NSString *relativeOutputFilePath = [NSString stringWithFormat:@"%@/%@%d.png", directory, outputBaseName, currentPage];

NSString *ImageFileName = [documentsDirectory stringByAppendingPathComponent:relativeOutputFilePath];

CGRect sourceRect = CGPDFPageGetBoxRect(SourcePDFPage, kCGPDFMediaBox);

UIGraphicsBeginPDFContextToFile(ImageFileName, sourceRect, nil);

UIGraphicsBeginImageContext(CGSizeMake(sourceRect.size.width,sourceRect.size.height));

CGContextRef currentContext = UIGraphicsGetCurrentContext();

CGContextTranslateCTM(currentContext, 0.0, sourceRect.size.height); 
//596,842 //640×960,
CGContextScaleCTM(currentContext, 1.0, -1.0);

CGContextDrawPDFPage (currentContext, SourcePDFPage);
 // draws the page in the graphics context
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:relativeOutputFilePath];

[UIImagePNGRepresentation(image) writeToFile: imagePath atomically:YES];

}
}

您可以进一步查找更多here。

是否可以在我的pod的框架资源中从* .pdf文件创建UIImage？

1 个答案: