How many lines of code can be used to blur images?

How many lines of code can be used to blur images?

 

A clear image is blurred, that is, the so-called frosted glass effect. You can View the layer to find that it only adds a View to the original image, and this View has a frosted glass effect,

Shows how to view layers:

 

The final result is as follows:

1 1 // Create Image 2 2 UIImageView * imgView = [[UIImageView alloc] initWithFrame: [UIScreen mainScreen]. bounds]; 3 3 imgView. image = [UIImage imageNamed: @ "1"]; 4 4 [self. view addSubview: imgView]; 5 5 // Add the blur effect 6 then * blurEffect = [too many twithstyle: Finished]; 7 uivisual1_tview * effectView = [[uivisual1_tview alloc] initWithEffect: blurEffect]; 8 effectView. frame = [UIScreen mainScreen]. bounds; 9 9 [imgView addSubview: effectView];