Question

Where in res folder should I put my font file (TTF)?

Answer 1

You can create the font in asset folder (i.e asset/fonts/roboto.ttf).

Then, create an appropriate class for your TextView:

// RobotoFont class
package com.my.font;
public class RobotoFont  extends TextView {
    public RobotoFont(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    public RobotoFont(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public RobotoFont(Context context) {
        super(context);
    }
    public void setTypeface(Typeface tf, int style) {
        if (style == Typeface.BOLD) {
            super.setTypeface(Typeface.createFromAsset(getContext().getAssets(),    "fonts/Roboto-Bold.ttf"));
        }
        else if(style == Typeface.ITALIC)
        {
            super.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Italic.ttf"));
        }
        else
        {
            super.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Regular.ttf"));
        }
    }
}

and finally, update your layout:

//main.xml
//replace textview with package name com.my.font.RobotoFont
<com.my.font.RobotoFont
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:paddingBottom="2dip" />