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截屏功能
给UIView添加扩展方法：
// 截屏
- (UIImage *)captureScreenshot {
UIGraphicsBeginImageContextWithOptions(self.bounds.size, NO, [UIScreen mainScreen].scale);
// IOS7及其后续版本
if ([self respondsToSelector:@selector(drawViewHierarchyInRect:afterScreenUpdates:)]) {
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:
[self methodSignatureForSelector:
@selector(drawViewHierarchyInRect:afterScreenUpdates:)]];
[invocation setTarget:self];
[invocation setSelector:@selector(drawViewHierarchyInRect:afterScreenUpdates:)];
CGRect arg2 = self.bounds;
BOOL arg3 = YES;
[invocation setArgument:&arg2 atIndex:2];
[invocation setArgument:&arg3 atIndex:3];
[invocation invoke];
} else { // IOS7之前的版本
[self.layer renderInContext:UIGraphicsGetCurrentContext()];
}
UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return screenshot;
}
最后更新：2017-04-03 05:39:56