textview.getLineCount always 0 in android

Question

I\'m trying to dynamically resize my textview but getlinecount() method always returns me 0 even after settext() and invalidate(). I\'m using the following code:

Answer 1

actually TextView.getLineCount() rely on TextView.mLayout.getLineCount but TextView.mLayout is lazy init before onMeasure, you can do like this:

       if (holder.contentTV.getLayout() == null) {
            holder.contentTV.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    holder.contentTV.getLineCount();
                    holder.contentTV.getViewTreeObserver().removeOnPreDrawListener(this);
                    return true;
                }
            });
        } else {
            holder.contentTV.getLineCount();
        }