StyledButton.java

package com.realtrackandroid.common;

import android.content.Context;
import android.graphics.Typeface;
import android.support.v4.util.LruCache;
import android.util.AttributeSet;
import android.widget.Button;

public class StyledButton extends Button {
  private final static String DEFAULT_TYPEFACE = "fontawesome";

  final String FONTAWESOME_TTF_PATH = "fontawesome-webfont.ttf";

  private final static LruCache<String, Typeface> TYPEFACE_CACHE = new LruCache<String, Typeface>(
          10);

  public StyledButton(Context context) {
    super(context);
    initTypefaceCache();
  }

  public StyledButton(Context context, AttributeSet attrSet) {
    super(context, attrSet);
    initTypefaceCache();
  }

  public StyledButton(Context context, AttributeSet attrSet, int defStyle) {
    super(context, attrSet, defStyle);
    initTypefaceCache();
  }

  /**
   * @param typeFaceName
   *          name of typeface. Use the same name consistently for your typeface
   * @param typeFacePath
   *          must be a path to an asset in your assets folder
   */
  public StyledButton(Context context, String typeFaceName, String typeFacePath) {
    super(context);
    initTypefaceCache(typeFaceName, typeFacePath);
  }

  private void initTypefaceCache() {
    initTypefaceCache(DEFAULT_TYPEFACE, FONTAWESOME_TTF_PATH);
  }

  private void initTypefaceCache(String typeFaceName, String typeFacePath) {
    Typeface typeFace;
    if ((typeFace = TYPEFACE_CACHE.get(typeFaceName)) == null) {
      typeFace = Typeface.createFromAsset(getContext().getAssets(), typeFacePath);
      TYPEFACE_CACHE.put(typeFaceName, typeFace);
    }

    setTypeface(typeFace);
  }
}