Accessing a font under assets folder from XML file in Android

Question

I am trying to do a application-wide font change and creating a style file to do so. In this file (below) I just want to change typeface value of TextAppearance style of And

Answer 1

I took droid kid's answer and made it work with ANY font, just by typing the font filename directly into the XML:

layout.xml

Fonts.java

public class Fonts {

    // use Weak so fonts are freed from memory when you stop using them
    private final static Map fonts = new WeakHashMap<>(5);

    /***
     * Returns a font at the given path within the assets directory.
     *
     * Caches fonts to save resources.
     *
     * @param context
     * @param fontPath Path to a font file relative to the assets directory, e.g. "fonts/Arial.ttf"
     * @return
     */
    public synchronized static Typeface getFont(Context context, String fontPath) {
        Typeface font = fonts.get(fontPath);

        if (font == null) {
            font = Typeface.createFromAsset(context.getAssets(), fontPath);
            fonts.put(fontPath, font);
        }

        return font;
    }
}

values/attrs.xml

TextViewWithFont.java

public class TextViewWithFont extends TextView {
    private int defaultDimension = 0;
    private int TYPE_BOLD = 1;
    private int TYPE_ITALIC = 2;
    private int fontType;
    private int fontName;

    public TextViewWithFont(Context context) {
        super(context);
        init(null, 0);
    }
    public TextViewWithFont(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(attrs, 0);
    }
    public TextViewWithFont(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(attrs, defStyle);
    }
    private void init(AttributeSet attrs, int defStyle) {
        // Load attributes
        final TypedArray a = getContext().obtainStyledAttributes(
                attrs, R.styleable.TextViewWithFont, defStyle, 0);
        String fontPath = a.getString(R.styleable.TextViewWithFont_fontFilePath);
        fontType = a.getInt(R.styleable.TextViewWithFont_type, defaultDimension);
        a.recycle();

        if (fontPath != null) {
            setFontType(Fonts.getFont(getContext(), fontPath));
        }
    }
    private void setFontType(Typeface font) {
        if (fontType == TYPE_BOLD) {
            setTypeface(font, Typeface.BOLD);
        } else if (fontType == TYPE_ITALIC) {
            setTypeface(font, Typeface.ITALIC);
        } else {
            setTypeface(font);
        }
    }
}