Question

我正在创建一个需要能够在视图之间滑动的应用。我使用了来自here的示例代码来开始。我遇到的问题是，当我从一个ViewController转到分页ViewControllers然后再返回时，ViewControllers会被添加到列表中并且列表会不断增长。我在屏幕上看到了可以滚动的重复ViewControllers。新列表刚刚添加到已填充的viewControllers。

的末尾

我没有在主屏幕上使用导航控制器，它只是一个带有按钮的滚动视图。这是HomeViewController类的一部分：

private void BuildScrollView()
    {
        float padding = 0.0f;
        float h = 80.0f;

        UIView content = new UIView (new RectangleF (15, 130, UIScreen.MainScreen.Bounds.Width - 30, UIScreen.MainScreen.Bounds.Height));
        content.BackgroundColor = UIColor.FromRGB(ColorManager.Grey_undrline_RGB[0], ColorManager.Grey_undrline_RGB[1], ColorManager.Grey_undrline_RGB[2]);


        UIScrollView scrollView = new UIScrollView {
            Frame = new RectangleF(2, 2, content.Frame.Width - 4 , content.Frame.Height -4), 
            BackgroundColor = UIColor.FromRGB(ColorManager.Grey_backgrd_RGB[0], ColorManager.Grey_backgrd_RGB[1], ColorManager.Grey_backgrd_RGB[2]),
            AutoresizingMask = UIViewAutoresizing.FlexibleWidth
        };
        List<myObject> prayerList = myObjectBuilder.GeObjectFiles ();

        for(int i = 0; i < myList.Count; i++){

            UIView btnView = new UIView(new RectangleF (padding  , padding * (i + 1) + (i * h), scrollView.Frame.Width - (padding * 2), h));
            btnView.BackgroundColor = UIColor.FromRGB (ColorManager.Grey_backgrd_RGB [0], ColorManager.Grey_backgrd_RGB [1], ColorManager.Grey_backgrd_RGB [2]);

            myButton btnImage = new myButton (new RectangleF (3, 3, 135, 80));


            UIImage tempImage = new UIImage ("Images/bottomImages/" + myList[i].bottomImage ).Scale(new SizeF(135, 80));

            btnImage.BackgroundColor = UIColor.FromPatternImage (tempImage);
            btnImage.PrayerID = i;
            btnImage.TouchUpInside += (object sender, EventArgs e) => {
                LoadPrayerView(sender);
            };

            btnView.AddSubview (btnImage);

            myButton button = new myButton(new RectangleF (141, 3, btnView.Frame.Width - 145, h));
            button.PrayerID = i;

            button.BackgroundColor = UIColor.White;

            button.SetTitle (myList[i].ShortTitle.ToUpper(), UIControlState.Normal);
            button.SetTitleColor (UIColor.Black, UIControlState.Normal);
            button.HorizontalAlignment = UIControlContentHorizontalAlignment.Left;

            button.TitleLabel.Font = UIFont.FromName ("HelveticaNeue", 16.0f);
            button.TitleLabel.Lines = 0;
            button.TitleLabel.LineBreakMode = UILineBreakMode.WordWrap;
            button.TitleEdgeInsets = new UIEdgeInsets (0, 10, 0, 10);

            button.TouchUpInside += (object sender, EventArgs e) => {
                LoadView(sender);
            };

            btnView.AddSubview (button);
            scrollView.AddSubview (btnView);

        }

        scrollView.ContentSize = new SizeF (scrollView.Frame.Width, (prayerList.Count + 2) * (h + padding) + padding);

        content.AddSubview (scrollView);
        this.View.AddSubview (content);

    }

如果需要，我可以发布更多代码。在这一点上，我不确定从哪里开始寻找解决方案。

Monotouch Paging ViewControllers不断添加视图

0 个答案: