//这是按钮的 要是imageview 改下uIimage对象即可 + (void)showImage:(UIButton*)avatarImageView { UIImage *image =a
//这是按钮的 要是imageview 改下uIimage对象即可
+ (void)showImage:(UIButton*)avatarImageView
{
UIImage *image =avatarImageView.currentBackgroundImage;
// 获得根窗口
UIWindow *window =[UIApplication sharedApplication].keyWindow;
UIView *backgroundView =[[UIView alloc]initWithFrame:CGRectMake(0, 0, KWidth, KHeight)];
//将rect由rect所在视图转换到目标视图view中，返回在目标视图view中的rect
oldframe =[avatarImageView convertRect:avatarImageView.bounds toView:window];
backgroundView.backgroundColor =[UIColor blackColor];
backgroundView.alpha =0.5;
UIImageView *imageView =[[UIImageView alloc]initWithFrame:oldframe];
imageView.image =image;
imageView.tag =1;
[backgroundView addSubview:imageView];
[window addSubview:backgroundView];
//点击图片缩小的手势
UITapGestureRecognizer *tap =[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(hideImage:)];
[backgroundView addGestureRecognizer:tap];
[UIView animateWithDuration:0.3 animations:^{
imageView.frame =CGRectMake(0,([UIScreen mainScreen].bounds.size.height-image.size.height*[UIScreen mainScreen].bounds.size.width/image.size.width)/2, [UIScreen mainScreen].bounds.size.width, image.size.height*[UIScreen mainScreen].bounds.size.width/image.size.width);
backgroundView.alpha =1;
}];
}
+ (void)hideImage:(UITapGestureRecognizer *)tap{
UIView *backgroundView =tap.view;
UIImageView *imageView =(UIImageView *)[tap.view viewWithTag:1];
[UIView animateWithDuration:0.3 animations:^{
imageView.frame =oldframe;
backgroundView.alpha =0;
} completion:^(BOOL finished) {
[backgroundView removeFromSuperview];
}];
}
