Block user from saving images.

faacs · 08-17-2009, 03:49 AM

Hi all,

My app download images from internet and display to the users. I dont want to use caching and I also dont want user to save images on iphone anyway. So I need to know

1) what extra things I need to take care off to achieve this.

2_ Following is the code used to disable caching. Please correct me if I m wrong somewhere. I have written this code in ViewDidload method.

Code:

NSURLCache * cache=[NSURLCache sharedURLCache];
	[cache setMemoryCapacity:0];
	[cache setDiskCapacity:0];
	[cache removeAllCachedResponses];

My NSURLRequest is like following line.

Code:

NSURLRequest *imageRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:ImageUrl] 
											   cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:15.0];

Regards,

Ali.

NewiPhoneDeveloper · 08-17-2009, 06:23 AM

Quote:

Originally Posted by faacs

Hi all,

My app download images from internet and display to the users. I dont want to use caching and I also dont want user to save images on iphone anyway. So I need to know

1) what extra things I need to take care off to achieve this.

2_ Following is the code used to disable caching. Please correct me if I m wrong somewhere. I have written this code in ViewDidload method.

Code:

NSURLCache * cache=[NSURLCache sharedURLCache];
	[cache setMemoryCapacity:0];
	[cache setDiskCapacity:0];
	[cache removeAllCachedResponses];

My NSURLRequest is like following line.

Code:

NSURLRequest *imageRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:ImageUrl] 
											   cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:15.0];

Regards,

Ali.

Users can always grab the screen by pushing home & on/off button. I'm affraid you can not avoid that.