Save UIView to a transparent PNG

uiview png transparent iphone
user416445 picture user416445 · Jan 19, 2011 · Viewed 8.4k times · Source

I have a UIView and I want it to be stored as a transparent PNG, i.e. without the UIVIew background color...

I am currently using this code and it's working OK but with the background color :( 

UIGraphicsBeginImageContext(self.bounds.size);
[self.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage* image1 = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImagePNGRepresentation(image1);
[imageData writeToFile:filePath atomically:YES];

So does anyone have any idea about getting this image as a transparent one?

Thank you in advance..

Answer

Lukas Kalinski picture Lukas Kalinski · May 5, 2014

In my case, I forgot the opaque property. It should be set to NO:

view.opaque = NO;

Related questions

How to add constraints programmatically using Swift

I'm trying to figure this out since last week without going any step further. Ok, so I need to apply some constraints programmatically in Swift to a UIView using this code: var new_view:UIView! = UIView(frame: CGRectMake(0, 0, 100, 100)); new_view.…

Read More
How to add a touch event to a UIView?

How do I add a touch event to a UIView? I try: UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, nextY)] autorelease]; [headerView addTarget:self action:@selector(myEvent:) forControlEvents:UIControlEventTouchDown]; // ERROR MESSAGE: UIView may not respond to '-addTarget:…

Read More
Giving UIView rounded corners

My login view has a subview which has a UIActivityView and a UILabel saying "Signing In…". This subview has corners which aren't rounded. How can I make them round? Is there any way to do it inside my xib?

Read More