Typeface tfArchitectsDaughter = Typeface.createFromAsset(getAssets(), "fonts/ArchitectsDaughter.ttf");
textview.setTypeface(tfArchitectsDaughter);

String tempString="Copyright";
TextView text=(TextView)findViewById(R.id.text);
SpannableString spanString = new SpannableString(tempString);
spanString.setSpan(new UnderlineSpan(), 0, spanString.length(), 0);
spanString.setSpan(new StyleSpan(Typeface.BOLD), 0, spanString.length(), 0);
spanString.setSpan(new StyleSpan(Typeface.ITALIC), 0, spanString.length(), 0);
text.setText(spanString);

SpannableString text = new SpannableString("Lorem ipsum dolor sit amet");
// make "Lorem" (characters 0 to 5) red
text.setSpan(new ForegroundColorSpan(Color.RED), 0, 5, 0);
textView.setText(text, BufferType.SPANNABLE);

textview.setTypeface(tfArchitectsDaughter, Typeface.BOLD);

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="boldText">
        <item name="android:textStyle">bold|italic</item>
        <item name="android:textColor">#FFFFFF</item>
    </style>

    <style name="normalText">
        <item name="android:textStyle">normal</item>
        <item name="android:textColor">#C0C0C0</item>
    </style>
</resources>

Typeface tfArchitectsDaughter = Typeface.createFromAsset(getAssets(), "fonts/ArchitectsDaughter.ttf");
textview.setTypeface(tfArchitectsDaughter);

myTextView.setTextAppearance(getApplicationContext(), R.style.boldText);

TextView.setTextAppearance(getApplicationContext(), R.style.boldText);

TextView.setTextAppearance(getApplicationContext(), R.style.boldText);