update addContentView RelativeLayout ViewGroup.LayoutParams

Bonjour,

je voudrais pouvoir modifier la hauteur d'un RelativeLayout

Code:

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1 2	RelativeLayout layout = new RelativeLayout(activity); activity.addContentView(layout, new ViewGroup.LayoutParams(width, height));

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comment m'y prendre ?
quelque chose comme

Code:

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activity.updateContentView(layout, new ViewGroup.LayoutParams(width, height-200));

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merci