Question

Scrollviewcustomcontrol未发送正确的ID以显示所需的输出。我们有两个textview显示了scrollview中的4篇文章片段。它们是scrollview的子视图。现在点击它们，我希望打开该文章的详细信息页面以及滚动条，以便可以以完整形式浏览/滚动所有新闻。 ScrollerView就位，使用分页，并从头开始显示所有记录。它只是没有找到我们点击的确切文章。我试图通过分配给它的textviews和按钮传递值。但是它可以传递两个值，因为我们有两个文本视图......并且有四篇文章。文章编号3传递文章编号1的ID。文章编号4传递文章编号2的ID。有什么想法吗？

    - (IBAction) tappedItemAtIndex:(id)sender {

UIButton *tappedButton = (UIButton*) sender;
NSInteger selectedIndex = [tappedButton tag];

}

    int j=0;
    for (int i = 0; i < rowOne.count; i++) {

        if (j==1) {

            j++;


        }

        count =i+1;
    CGRect frame;
    frame.origin.x = self.scrollView.frame.size.width * i;
    frame.origin.y = 0;
    frame.size = self.scrollView.frame.size;
    UIView*subView=[[UIView alloc ]initWithFrame:frame];
    [self.scrollView addSubview:subView];

    CGRect myframe=CGRectMake(107, 46, 258, 128);        

    //CGRect myframe=CGRectMake(13, 46, 352, 128);
    Book*book=[rowOne objectAtIndex:i];
    UIButton*backViewButton=[UIButton buttonWithType:UIButtonTypeCustom];

     backViewButton.frame=CGRectMake(107, 46, 258, 128);    
    [backViewButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];



        buttontitle=book.title;

        [backViewButton addTarget:self action:@selector(tappedItemAtIndex:)forControlEvents:UIControlEventTouchUpInside];    
        [backViewButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        [backViewButton setTitle:buttontitle forState:UIControlStateNormal];
        [subView addSubview:backViewButton];


        backViewButton.tag=j;


        j++;

        Book*book1=[rowOneSecond objectAtIndex:i];
        UIButton*backViewButton1=[UIButton buttonWithType:UIButtonTypeCustom];

        backViewButton1.frame=CGRectMake(531, 99, 300, 100);    
        [backViewButton1 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

        NSString*title=book1.title;

        backViewButton1.tag=j;

        [backViewButton1 addTarget:self action:@selector(tappedItemAtIndex:)forControlEvents:UIControlEventTouchUpInside];    
        [backViewButton1 setTitle:title forState:UIControlStateNormal];
        [subView addSubview:backViewButton1];                                               

}

Answer 1

您是否尝试将标签设置为textViews。就像在scrollview中添加它们一样，我假设你运行一个循环，所以将textView添加到一个按钮，然后将该按钮添加到scrollview并指定tag = index（循环增量变量）。将目标添加到按钮。从那里你可以得到按钮的标签，然后通过创建委托协议将它传递给超类。

<强>更新

//我假设你有这种类型的功能绑定到每个按钮的touchUpInside。

- (IBAction) tappedItemAtIndex:(id)sender {
    UIButton *tappedButton = (UIButton*) sender;
    NSInteger selectedIndex = [tappedButton tag];

}

Answer 2

要滚动到基于页面的内容，请在滚动条视图中存储pageNumber。当您按“下一页”按钮或以某种方式滚动到下一页时，增加页码，然后每次加载页面呼叫时：

- (void)loadPage:(NSInteger)pageNumber
{
    // textViews is an NSArray of the 2 textviews you have in your scroller view
    // articles is an NSArray in scrollerview containing all articles as strings
    unsigned int i, article;
    for(i = 0; i < [textViews count]; ++i)
    {
        article = pageNumber*[textViews count]+i;
        if(article < [articles count])
        {
            [(UITextView *)[textViews objectAtIndex:i]
             setText:[articles objectAtIndex:article]];
        } else {
            [(UITextView *)[textViews objectAtIndex:i]
             setText:@""]; // blank pages, because we're at the end
        }
    }
}

Answer 3

UIScrollView contentOffSet属性，

CGPointMake这是你需要跳跃的确切点

scrollView.contentOffSet = CGPointMake();

对你有帮助，我早点实施了..

ScrollView问题...需要跳转到确切位置

3 个答案: