Andorid fonts face utils

FontFaceUtils.java

/**
 * Utility class for fonts manipulations.
 */
public final class FontFaceUtils {

    public static final LruCache<String, Typeface> sCache = new LruCache<>(6);

    private FontFaceUtils() {
    }

    public static void setFont(TextView view, String fontName) {
        if (fontName == null) {
            Timber.w(new IllegalArgumentException(), "No fontFace is found in textAppearance or you haven't overridden it with the @string/systems_roboto");
            return;
        }
        AssetManager assetManager = view.getContext().getAssets();
        Typeface typeface = getFontFace(assetManager, fontName);
        if (typeface == null) return;
        view.setTypeface(typeface);
    }


    public static Typeface getFontFace(AssetManager assetManager, String fontName) {
        Typeface typeface = sCache.get(fontName);
        if (typeface == null) {
            try {
                typeface = Typeface.createFromAsset(assetManager, "fonts/" + fontName);
                sCache.put(fontName, typeface);
            } catch (RuntimeException e) {
                Timber.w(e, "FontName does not correspond to a font in assets");
            }
        }
        return typeface;
    }

    /**
     * Read Style Attributes and ApplyFont
     *
     * @param view
     * @param attrs
     * @param defStyleAttr
     * @param defStyleRes
     */
    public static void readStyleAttributesAndApplyFont(TextView view, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        if (attrs == null) return;

        final Resources.Theme theme = view.getContext().getTheme();
        final String systemsRoboto = view.getContext().getString(R.string.systems_roboto);

        TypedArray viewTypedArray = null;
        TypedArray textAppearanceStyleTypedArray = null;

        try {
            viewTypedArray = theme
                    .obtainStyledAttributes(attrs, new int[]{android.R.attr.textAppearance}, defStyleAttr, defStyleRes);

            int textAppearanceStyle = viewTypedArray.getResourceId(0, -1);

            if (textAppearanceStyle != -1) {
                textAppearanceStyleTypedArray = theme.obtainStyledAttributes(textAppearanceStyle, R.styleable.View);

                String fontFaceName = textAppearanceStyleTypedArray.getString(R.styleable.View_fontFace);
                if (!systemsRoboto.equals(fontFaceName))
                    setFont(view, fontFaceName);
            }
        } finally {
            if (viewTypedArray != null) {
                viewTypedArray.recycle();
            }
            if (textAppearanceStyleTypedArray != null) {
                textAppearanceStyleTypedArray.recycle();
            }
        }
    }
}