Android set height and width of Custom view programmatically

Question

I have created a custom view named Graphview . Here is the structure for the GraphView class.

public class GraphView extends View {

    public GraphView(Context context, float[] values, String title, String[] horlabels, String[] verlabels, boolean type) {
        super(context);
                ........
   }

   ..................
   .................
}

I have added the view in a tablerow using addview(). It is working fine. Now I want to set height and width for the GraphView. How to do that?

Answer 1

If you know the exact size of the view, just use setLayoutParams():

graphView.setLayoutParams(new LayoutParams(width, height));

Or in Kotlin:

graphView.layoutParams = LayoutParams(width, height)

However, if you need a more flexible approach you can override onMeasure() to measure the view more precisely depending on the space available and layout constraints (wrap_content, match_parent, or a fixed size). You can find more details about onMeasure() in the android docs.