今天在学习自定义场景动画的时候发现，貌似在iOS 10中snapshotviewafterscreenupdates方法失效了。
所以我用runtime的方法交换，实现了一下：
#import "UIView+SnapshotView.h"
#import <objc/message.h>
@implementation UIView (SnapshotView)
+ (void)load {
Method snapshotViewAfterScreenUpdatesMethod = class_getInstanceMethod(self, @selector(snapshotViewAfterScreenUpdates:));
Method wwzSnapshotViewAfterScreenUpdatesMethod = class_getInstanceMethod(self, @selector(wwz_snapshotViewAfterScreenUpdates:));
method_exchangeImplementations(snapshotViewAfterScreenUpdatesMethod, wwzSnapshotViewAfterScreenUpdatesMethod);
}
- (UIView *)wwz_snapshotViewAfterScreenUpdates:(BOOL)afterUpdates {
if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){10,0,0}]) { // iOS 10
UIGraphicsBeginImageContext(self.frame.size);
CGContextRef context = UIGraphicsGetCurrentContext();
[self.layer renderInContext:context];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIView *newView = [[UIView alloc] initWithFrame:self.frame];
newView.layer.contents = (id)image.CGImage;
return newView;
}else {
return [self wwz_snapshotViewAfterScreenUpdates:afterUpdates];
}
}
@end
这还是我第一次写文章，应该也不算文章吧，算是记录一下。希望对大家有点帮助
