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 [英] UIButton's image scrolling with scrollview but its action/method remains on original position

问题描述

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.当我单击同一个位置时，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:

I have a UIScrollView that scrolls automatically, and I create several buttons using initWithFrame, each with an image and an unique action(method) and add them all to the scroll view. The buttons' images can be scrolling automatically with the scroll view but when I click on each button, it's not the method I assigned to that button. When I click on the same position, no matter which buttons pass by, it goes to the same method instead of the method of that button. Below is my code for creating the buttons:

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:

Below is the code for the automatically scroll the scrollview:

- (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.

Any clues why this strange behaviour happens?? Thanks.

推荐答案

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...

and create method like this...

-(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");

}

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