m (→Example: More common.) |
m (UIBackDropView -> UIBackdropView) |
||
Line 7: | Line 7: | ||
<source lang="objc"> | <source lang="objc"> | ||
Class | Class UIBackdropView = objc_getClass("_UIBackdropView"); | ||
if ( | if (UIBackdropView) | ||
{ | { | ||
id settings = nil; | id settings = nil; | ||
Line 18: | Line 18: | ||
} | } | ||
UIView * backView = (UIView *) [[ | UIView * backView = (UIView *) [[UIBackdropView alloc] initWithFrame:CGRectMake(0, 0, 0, 0) | ||
autosizesToFitSuperview:YES | autosizesToFitSuperview:YES | ||
settings:settings]; | settings:settings]; |
Revision as of 18:02, 14 May 2014
_UIBackdropView is a private class in UIKit.framework (iOS 7.0+), which is used for the popular blur effects.
It uses a CABackdropLayer with a gaussianBlur CAFilter.[1]
Example
Class UIBackdropView = objc_getClass("_UIBackdropView");
if (UIBackdropView)
{
id settings = nil;
Class _UIBackdropViewSettings = objc_getClass("_UIBackdropViewSettings");
if (_UIBackdropViewSettings)
{
settings = [_UIBackdropViewSettings settingsForStyle:2060]; // 2060 is the system control center background view style
}
UIView * backView = (UIView *) [[UIBackdropView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)
autosizesToFitSuperview:YES
settings:settings];
[self addSubview:backView];
[backView release];
}
References