View PDF file converted to BLOB image in UIImage or UIScroller - ios

Question

my App requirement is to view uploaded documents from IPAD.
i am importing document from database in the form of BLOB image and passing it to IPAD and with below code i could view image.
NSString *strImage; // String has BLOB image from DB
NSData *imageData = [self dataFromBase64EncodedString:strImage];
UIImage *image = [UIImage imageWithData:imageData];
UIImageView *m_oImageViewer = [[UIImageView alloc]init];
m_oImageViewer.image = image;
m_oImageViewer.frame=CGRectMake((self.view.frame.size.width/2)- 250,60,500,500);
[self.view addSubview:m_oImageViewer];
-(NSData *)dataFromBase64EncodedString:(NSString *)string{
if (string.length > 0)
{
NSString *data64URLString = [NSString stringWithFormat:#"data:;base64,%#", string];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:data64URLString]];
return data;
}
return nil;
If PDF file converted to BLOB why i am getting image as nil, as i can see BLOB is common so why only .png files i can se and not PDF file even after converting to BLOB.
i read support document for UIImage it does not give PDF file but i am giving BLOB image. where i am going wrong.
i have to use any other property, or this is not possible.

Answer 1

PDF isn't image format, its something like container with text, fonts, vector and raster images etc, so you can't convert it into UIImage, but UIWebView can show pdf (and a lot another format). I think, you should save pdf BLOB to temp folder and then show it in UIWebView, something like:
[pdfData writeToFile:tempFilePath atomically:YES];
NSURL *url = [NSURL fileURLWithPath:tempFilePath];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[self.webView loadRequest:request];