Question: I want to change the font face in my application. I want change for all components TextView in my application, how can do that ?

Answer: 
UPDATED ANSWER:

```
@Override  
public View getView(int position, View view, ViewGroup viewGroup)
{
 View v = super.getView(position, view, viewGroup);
 ((TextView)v).setTypeface(font);
 return v;
}

```

Override the default getView method and set your font as typeface as mentioned above.
I think the best way for you is to set theme for your application.
[Applying styles and themes](http://developer.android.com/guide/topics/ui/themes.html) link should help.