Set font at runtime, TextView

Question

How to set the font of a TextView created at runtime?

I created a TextView

Textview tv = new TextView(this);      
tv.setTextSize(20);

Answer 1

You can use the following code to set all your text to a specific font at runtime. Just call the setViewGroupFont method at the end of your Activity onCreate method or whenever you dynamically create new views:

private static final String FONT_NAME = "fonts/Roboto-Regular.ttf";
private static Typeface m_font = null;

public static Typeface getFont(Context p_context)
{
    if (null == m_font && null != p_context)
    {
        m_font = Typeface.createFromAsset(p_context.getApplicationContext().getAssets(), FONT_NAME);
    }
    return m_font;
}

public static void setViewGroupFont(ViewGroup p_viewGroup)
{
    if (null != p_viewGroup)
    {
        for (int currChildIndex = 0; currChildIndex < p_viewGroup.getChildCount(); currChildIndex++)
        {
            View currChildView = p_viewGroup.getChildAt(currChildIndex);

            if (ViewGroup.class.isInstance(currChildView))
            {
                setViewGroupFont((ViewGroup) currChildView);
            }
            else
            {
                try
                {
                    Method setTypefaceMethod = currChildView.getClass().getMethod("setTypeface", Typeface.class);

                    setTypefaceMethod.invoke(currChildView, getFont(p_viewGroup.getContext()));
                }
                catch (NoSuchMethodException ex)
                {
                    // Do nothing
                }
                catch (Exception ex)
                {
                    // Unexpected error setting font
                }
            }
        }
    }
}