Iphone 在可见时隐藏ImageView

我有一个显示滚动视图的按钮。我在awesomeView下有三张图片。然后我在scrollView中添加了一个用于滚动的awesomeView。当我单击任何图像时，awesomeView将添加到myImageView8。因为myImageView8在屏幕中央显示awesomeview图像。当我的ImageView8或awesomeView在屏幕上可见时，我需要隐藏它

代码：

如果我单击按钮，则会显示滚动条。但当我单击“图像”时，如果myImageView8可见，它将重新出现

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if（myImageView8）{[myImageView8 removeFromsuperView]；}else{[myImageView8 addSubView:awesomeView]；}如果myImageView8==nil，那么如何在其上添加awesomeView子视图？您的要求是什么？我需要的是，如果myImageView8在屏幕上可见，当我单击image时，它不会重新出现。但是，我拖到了某个位置。然后我单击myImageView8重新显示此帧大小（0、50、320，self.view.frame.size.height）的图像之一。如果是myImageView8，我需要隐藏并重新出现。我没有得到您想要的确切信息，但是如果您想更改myImageView8的图像，当您在scrollview（ie按钮）中单击任何图像时，然后在按钮中单击“不删除myImageView8”，只需通过myImageView8更改myImageView8的图像即可。image=@“ImageNameYouWantDisplay”@NuzhatZari:见上图。当我点击一个按钮，孩子，女人，男人的图像就会显示出来。单击其中一个图像后，myImageView8将显示在屏幕中央。拖动、挤压、缩放后。当我单击其中一个图像时，myImageView8将再次显示所有图像。如果图像显示在屏幕上，我需要隐藏重新出现

scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 420, self.view.frame.size.width, self.view.frame.size.height)];
scroll.pagingEnabled = YES;
NSInteger numberOfViews = 3;
for (int i = 0; i < numberOfViews; i++) {
    //  CGFloat xOrigin = i * self.view.frame.size.width;
    // awesomeView = [[UIView alloc] initWithFrame:CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height)];

    awesomeView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, self.view.frame.size.height)];

    awesomeView.backgroundColor=[UIColor clearColor];
    [scroll addSubview:awesomeView];

    img = [UIButton buttonWithType:UIButtonTypeCustom];

    [img setImage:[UIImage imageNamed:@"img.png"] forState:UIControlStateNormal];
    // [overlayButton setFrame:CGRectMake(80, 420, 60, 30)];

    [img setFrame:CGRectMake(0, 0, 100,130)];

    [img addTarget:self action:@selector(img:) forControlEvents:UIControlEventTouchUpInside];
    [img setTag:0];

    [awesomeView addSubview:img];

    img1 = [UIButton buttonWithType:UIButtonTypeCustom];
    [img1 setImage:[UIImage imageNamed:@"sofa_s2.png"] forState:UIControlStateNormal];
    // [overlayButton setFrame:CGRectMake(80, 420, 60, 30)];
    [img1 setFrame:CGRectMake(110, 0, 100,130)];
    [img1 setTag:1];

    [img1 addTarget:self action:@selector(img1:) forControlEvents:UIControlEventTouchUpInside];
    [awesomeView addSubview:img1];

    img2 = [UIButton buttonWithType:UIButtonTypeCustom];
    [img2 setImage:[UIImage imageNamed:@"sofa_s3.png"] forState:UIControlStateNormal];
    // [overlayButton setFrame:CGRectMake(80, 420, 60, 30)];

    [img2 setFrame:CGRectMake(210, 0, 100,130)];
    [img2 setTag:2];
    [img2 addTarget:self action:@selector(img2:) forControlEvents:UIControlEventTouchUpInside];
    [awesomeView addSubview:img2];
}
scroll.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews, self.view.frame.size.height);
[self.view addSubview:scroll];

myImageView8=[[UIImageView alloc]initWithFrame:CGRectMake(0, 50, 320, self.view.frame.size.height)];
[self.view addSubview:myImageView8];
myImageView8.userInteractionEnabled=YES;

-(void)img:(id)sender {
    if(myImageView8){
        [myImageView8 removeFromsuperView];
    } 
    else {
        [myImageView8 addSubView:awesomeView];
    }
}

-(void)img1:(id)sender {
    if(myImageView8) {
        [myImageView8 removeFromsuperView];
    }
    else {
        [myImageView8 addSubView:awesomeView];
    }
}

-(void)img2:(id)sender {
    if(myImageView8) {
        [myImageView8 removeFromsuperView];
    }
    else {
    [myImageView8 addSubView:awesomeView];
    }
}