how to set height of a layout with java in android studio -

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as can see in code below, want change height of answerbar linear layout 

answerbar.setheight(55)

try this:

answerbar.setlayoutparams(new linearlayout.layoutparams(desiredwidth, 50));

or:

answerbar.getlayoutparams().height = 50; answerbar.requestlayout();

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