重新出现之后视图不可触摸

Question

我有按钮显示scrollview。我在awesomeview下有图像。并且滚动具有滚动图像的精彩视图。然后使用myImageView8将精彩视图带到屏幕中心。当我单击scrollview图像时，myImageView8会在屏幕中央显示awesomeview。然后我重新按下按钮，再次出现scrollview。但myImageView8不可触摸。单击scrollview图像后，myImageView8将再次显示屏幕中央的真棒。

代码：

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用于显示屏幕中心的显示效果：

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

-(void)img:(id)sender{
 [myImageView8 addSubview:awesomeView];


}

-(void)img1:(id)sender{
 [myImageView8 addSubview:awesomeView];


}

-(void)img2:(id)sender{
 [myImageView8 addSubview:awesomeView];


}

Answer 1

在向视图添加图片时，您需要向Image对象添加触摸事件：

  

OR

只需以编程方式启用用户交互

  

和

使用UIResponder方法touchesBegan，touchesMoved，touchesEnded等来检测图像视图上的触摸：

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [touches anyObject];

    if ([touch view] == yourImageView)
    {
            //add your code for image touch here 
    }

}