HorizontalFieldManager scroll horizontally to create image gallery

I started to add to a horizontalfieldmanager LabelFields expected to exceed the limits of the screen, but all content stays on the screen. I was expecting it to be like the verticalfieldmanager that automatically activates scrolling when the content exceeds the resolution.

How can I activate the scrolling horizontal, but more important still, to have that one field appear on the screen?

Maybe even have it as well as on touchscreens, it crashes in a field in order to prevent a user from being in the "middle" of the images.

Well, only USE_ALL_WIDTH is not enough - the first field will be the width all available (which is, in the case of a Manager scroll horizontally is Integer.MAX_VALUE > 1 (= 0x3FFFFFFF)). Not exactly what you want, is it?

You will have to make sure that fields use only the width of the screen, not the whole available width. You can do this as follows:

LabelField label1 = new LabelField("label text", LabelField.USE_ALL_WIDTH | LabelField.HCENTER) {
  protected void layout(int width, int height) {
    super.layout(Math.min(width, Display.getWidth(), height);
  }
};

Make sure you specify HCENTER, not FIELD_HCENTER (if you want the text of the label to be centered)-the latter will not work and is totally meaningless in conjunction with USE_ALL_WIDTH.

Good luck!

Tags: BlackBerry Developers

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