View Doc (pdf, image, .doc) imported as BLOB files in UIImageView within a UIScrollView.

Question

Hi,
I am new to IOS programming and after researching on topic i found post saying it is possible to view BLOB file in uiimageView.
I have already done sucessfully for BLOB file of Image. but i can not view pdf file, even if i got NSData.
/****** from SP ****/
Insert TestBlob(tbName, tbDesc, tbBin) Select
'Test.pdf','PDF file', BulkColumn from Openrowset( Bulk
'C:\blob\udoc\81.pdf', Single_Blob) as tb
/****** from my App *******/
NSString *strImage; // String has BLOB file 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;
Please help me. i have already viewd Image but PDF comming empty. i do not want to edit or do anything only user should be able to view uploaded Doc from IPD App. and Doc can be image, pdf or .doc or excel sheet. i get BLOB file for all file types which i pass to my App.
IS what i am doing is correct? as i imagine BLOB is common for all file Types. still i can not see pdf file(i have not tried other file formate only .png and pdf).
Please guid me if i am missing anything.

Answer 1

Hi Sreelatha. The best example code for your purpose is the Scrolling sample app I referred to previously. The word Scrolling in that post is a link to the download page. I think that code will answer all your questions about how to init a UIImage, then use it to init a UIImageView, and then position the UIImageView frame in a UIScrollView. Two cases are demostrated: 1) Scrolling horizontally through a series of images; 2) Scrolling both H & V over a single image which is several times larger than the window.
You might also be interested in the PageControl sample app in case you want to add a page control to your scroll view.
Reading your last post again... I sure hope we've been discussing images (like jpegs?) in this thread. This isn't about reading and rendering the actual xls, pdf and doc files, is it?? Of course the iPhone handles html beautifully, so for example, an html representation of a doc file would play nicely. But in that case you'd want a UIWebView, not a UIImageView.