UIBlurEffect*blur = [UIBlurEffecteffectWithStyle:UIBlurEffectStyleDark];
UIVisualEffectView*effectview = [[UIVisualEffectViewalloc]initWithEffect:blur];
effectview.frame= [[UIScreenmainScreen]bounds];
effectview.contentView.backgroundColor= [UIColorgreenColor];
effectview.contentView.alpha=0.1;
// UIImage *image = [self imageWithCaputureView:blackView];
UIView*view = [[UIViewalloc]initWithFrame:CGRectMake(0,0,375,600)];
[viewaddSubview:effectview];
UIButton*button = [UIButtonbuttonWithType:UIButtonTypeCustom];
button.backgroundColor= [UIColorredColor];
[buttonsetTitle:@"我是一个按钮"forState:0];
button.frame=CGRectMake(10,100,100,50);
[viewaddSubview:button];
// self.imageview = view;
[self.viewinsertSubview:viewbelowSubview:redView];
