_cellImage=[UIImage imageWithData:EncryptData];
[imageView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImageView:)]];
imageView.userInteractionEnabled = YES;
- (void)tapImageView:(UITapGestureRecognizer *)recognizer
{
//添加遮蓋
UIView *cover = [[UIView alloc] init];
cover.frame = [UIScreen mainScreen].bounds;
cover.backgroundColor = [UIColor clearColor];
[cover addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapCover:)]];
[[UIApplication sharedApplication].keyWindow addSubview:cover];
//添加圖片到遮蓋上
UIImageView *imageView = [[UIImageView alloc] initWithImage:_cellImage];
imageView.frame = [cover convertRect:recognizer.view.frame fromView:self];
self.lastFrame = imageView.frame;
[cover addSubview:imageView];
self.imagView = imageView;
//放大
[UIView animateWithDuration:0.3f animations:^{
cover.backgroundColor = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:0.8];
CGRect frame = imageView.frame;
frame.size.width = cover.frame.size.width;
frame.size.height = cover.frame.size.width * (imageView.image.size.height / imageView.image.size.width);
frame.origin.x = 0;
frame.origin.y = (cover.frame.size.height - frame.size.height) * 0.5;
imageView.frame = frame;
}];
}
- (void)tapCover:(UITapGestureRecognizer *)recognizer
{
[UIView animateWithDuration:0.3f animations:^{
recognizer.view.backgroundColor = [UIColor clearColor];
self.imagView.frame = self.lastFrame;
}completion:^(BOOL finished) {
[recognizer.view removeFromSuperview];
self.imagView = nil;
}];
}