UIButton 的图像使用滚动视图滚动，但它的动作/方法保持在原始位置

Question

我有一个自动滚动的 UIScrollView，我使用 initWithFrame 创建了几个按钮，每个按钮都有一个图像和一个独特的操作（方法），并将它们全部添加到滚动视图中。按钮的图像可以使用滚动视图自动滚动，但是当我单击每个按钮时，这不是我分配给该按钮的方法。当我点击同一个位置时，无论经过哪个按钮，它都会转到相同的方法而不是那个按钮的方法。下面是我创建按钮的代码：

for (int i = 0; i < 4; i++) {
        //create an imageView object in every 'page' of the scrollView.
        CGRect frame;
        frame.origin.x = 62 * i;
        frame.origin.y = 0;
        frame.size = CGSizeMake(52.0, 52.0);
        myButton = [[UIButton alloc] initWithFrame:frame];
        [myButton setImage:[MyImageArray objectAtIndex:i] forState:normal];
            switch (i) {
                case 0:
                    [myButton addTarget:self action:@selector(aMethod0) forControlEvents:UIControlEventTouchUpInside];
                    break;
                case 1:
                    [myButton addTarget:self action:@selector(aMethod1) forControlEvents:UIControlEventTouchUpInside];
                    break;
                case 2:
                    [myButton addTarget:self action:@selector(aMethod2) forControlEvents:UIControlEventTouchUpInside];
                    break;
                case 3:
                    [myButton addTarget:self action:@selector(aMethod3) forControlEvents:UIControlEventTouchUpInside];
                    break;
                default:
                    break;
            }
        [self.MyScrollView addSubview:myButton];

下面是自动滚动scrollview的代码：

- (void)move_pagination {

    UIPageControl *pgCtr = MyPageControl;

    CGFloat contentOffset = MyScrollView.contentOffset.x;
    __block int  nextPage = (int)(contentOffset/(MyScrollView.frame.size.width+10)) + 1 ;

    [UIView animateWithDuration:10
                          delay:0
                        options:UIViewAnimationOptionCurveLinear | UIViewAnimationOptionAllowUserInteraction
                     animations:^{
                         if( nextPage!=3 )  {
                             MyScrollView.contentOffset = CGPointMake(nextPage*(10+MyScrollView.frame.size.width), 0);
                             pgCtr.currentPage=nextPage;
                             // else start sliding from 1 :)
                         } else {
                             nextPage = 1;
                             MyScrollView.contentOffset = CGPointMake(0, 0);
                             MyScrollView.contentOffset = CGPointMake(nextPage*(10+MyScrollView.frame.size.width), 0);
                             pgCtr.currentPage=2;
                         }

                     }
                     completion:nil];
}

任何线索为什么会发生这种奇怪的行为？谢谢。

Answer 1

试试这个代码..

在你看来确实加载方法

 float x=62;
    for(int i=0;i<4;i++)
    {
        self.stack=[UIButton buttonWithType:UIButtonTypeCustom];
        self.stack.frame=CGRectMake(x+(62*i), 100, 52, 52);
        [self.stack setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
        [self.stack setTitle:[self.titleName objectAtIndex:i] forState:UIControlStateNormal];
        [self.stack setBackgroundColor:[UIColor redColor]];
        self.stack.tag=i;
        [self.stack addTarget:self action:@selector(actionMethod:) forControlEvents:UIControlEventTouchUpInside];
        //your scroll view
        //[self.scrView addSubview:self.btnlabe1];
        [self.view addSubview:self.stack];
    }

并创建这样的方法...

-(void)actionMethod:(id)sender
{
    UIButton *button=(UIButton *)sender;
    switch (button.tag) {

            case 0:
            NSLog(@"ACTIONMETHOD CODE HERE");
            break;
        case 1:
            NSLog(@"ACTIONMETHOD1 CODE HERE");
            break;
        case 2:
            NSLog(@"ACTIONMETHOD2 CODE HERE");
            break;
        case 3:
            NSLog(@"ACTIONMETHOD3 CODE HERE");
            break;

        default:
            break;
    }
}

修改后的代码

float x=62;
    for(int i=0;i<4;i++)
    {
        self.stack=[UIButton buttonWithType:UIButtonTypeCustom];
        self.stack.frame=CGRectMake(x+(62*i), 100, 52, 52);
        [self.stack setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
        [self.stack setTitle:[temp objectAtIndex:i] forState:UIControlStateNormal];
        [self.stack setBackgroundColor:[UIColor redColor]];
        switch (i) {
            case 0:
                [self.stack addTarget:self action:@selector(aMethod0) forControlEvents:UIControlEventTouchUpInside];
                break;
            case 1:
                [self.stack addTarget:self action:@selector(aMethod1) forControlEvents:UIControlEventTouchUpInside];
                break;
            case 2:
                [self.stack addTarget:self action:@selector(aMethod2) forControlEvents:UIControlEventTouchUpInside];
                break;
            case 3:
                [self.stack addTarget:self action:@selector(aMethod3) forControlEvents:UIControlEventTouchUpInside];
                break;
            default:
                break;
        }        //your scroll view
        //[self.scrView addSubview:self.stack];
        [self.view addSubview:self.stack];
    }

和方法

-(void)aMethod0
{
    NSLog(@"action 0");

}
-(void)aMethod1
{
    NSLog(@"action 1");

}
-(void)aMethod2
{
    NSLog(@"action 2");

}
-(void)aMethod3
{
    NSLog(@"action 3");

}