ImageView Black question screen on DA - anomaly or something else?

Hello friends,

I'm developing an application of connected local transit. Part of it includes essentially maps for each bus line. I use nested within a ScrollPane ImageView. Many of the cards are superior to a dimension 768 and 1280.

Question

ScrollPane ImageView displays BLACK on some images, but not others. I can't understand why and how to fix it.

My Application configuration

  1. Standard C + c++ / Cascades project
  2. Directory structure
    [Standard empty project template]
  3. + assets
    -main.qml
       

    import bb.cascades 1.0

//-- create one page with a label and text

Page {
    content: Container {
        layout: DockLayout {
        }
        background: Color.create("#FFFFFF")
        preferredWidth: 768
        preferredHeight: 1280
        ScrollView {
            id: mapScroll
            scrollViewProperties {
                scrollMode: ScrollMode.Both
            }
            // This ImageView Appears Black on the DA - qml preview in IDE ok
            /*ImageView {
                id: m45ustock
                preferredWidth: 2913
                preferredHeight: 2283
                imageSource: "asset:///images/m45ustock.png"
                onTouch: {
                    mapScroll.scrollViewProperties.scrollMode = ScrollMode.Both
                }
            }
            */
            // THIS ImageView DISPLAYS CORRECTLY
             ImageView {
                id: m10town
                preferredWidth: 1287
                preferredHeight: 1631
                imageSource: "asset:///images/m10townsend.png"
                onTouch: {
                    mapScroll.scrollViewProperties.scrollMode = ScrollMode.Both
                }
            }
        }
    }
}

    Create a folder "images" add attached images.

    - images
    -m10townsend.png
    -m45ustock.png

    Notes


    I commented the ImageView displaying BLACK. Toggle comments to test.

    Why is this happening?

    Ideas? Is this a bug? Are there restrictions on the ImageView in terms of file size, making it the dimensions, etc.?

    Thank you!

Have you gotten nowhere on that?

If you need to do a program, one way is to use http://supportforums.blackberry.com/t5/Cascades-Development-Knowledge/Using-QImage-and-QPainter-to-P...

Was it the root cause of your problem?

Stuart

Tags: BlackBerry Developers

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