問題描述

我有一個自動滾動的 UIScrollView，我使用 initWithFrame 創建了幾個按鈕，每個按鈕都有一個圖像和一個獨特的操作(方法)，并將它們全部添加到滾動視圖中.按鈕的圖像可以使用滾動視圖自動滾動，但是當我單擊每個按鈕時，這不是我分配給該按鈕的方法.當我單擊同一個位置時，無論經過哪個按鈕，它都會轉到相同的方法而不是那個按鈕的方法.下面是我創建按鈕的代碼:

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];

下面是自動滾動scrollview的代碼:

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];
}

任何線索為什么會發生這種奇怪的行為?謝謝.

Any clues why this strange behaviour happens?? Thanks.

推薦答案

試試這個代碼..

在你看來確實加載方法

 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];
    }

并創建這樣的方法...

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;
    }
}

修改后的代碼

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");

}

這篇關于UIButton 的圖像使用滾動視圖滾動，但它的動作/方法保持在原始位置的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！