Android:Change View font and avoid memory leak

    public static final int ROBOTO_REGULAR=1;

    public static final int ROBOTO_THIN=2;

    public static final int ROBOTO_THIN_ITALIC=3;

    public static final int ROBOTO_LIGHT=4;

    public static final int ROBOTO_BOLD=5;

    public static final int ADOBE_CLEAN_LIGHT=6;

    public static final int ADOBE_CLEAN_REGULAR=7;

public static final int ADOBE_CLEAN_BOLD = 8;

public static final int ADOBE_CLEAN_BOLD_ITALIC = 9;

@SuppressLint("UseSparseArrays")

         // use a hashmap to avoid memory leak. 

        //Typeface.createFromAsset is the reason why memory leak

private static HashMap<Integer, Typeface> fontCache=new HashMap<Integer, Typeface>();

public static Typeface getTypeface(View v,int type)

{

if (fontCache.containsKey(type))

return fontCache.get(type);

else

{

       Typeface tf = Typeface.createFromAsset(v.getContext().getAssets(),  

               "fonts/"+getFontByCode(type));  

       fontCache.put(type, tf);

       return tf;

}

}

/**

* Change the whole view's text font

* @param root the root of view group

* @param act the view's activity

*/

    public static void changeFonts(ViewGroup root, Activity act,int type) {  

//       Typeface tf = Typeface.createFromAsset(act.getAssets(),  

//              "fonts/"+getFontByCode(type));  

       for (int i = 0; i < root.getChildCount(); i++) {  

           View v = root.getChildAt(i);  

           Typeface tf=getTypeface(v, type);

           if (v instanceof TextView) {  

              ((TextView) v).setTypeface(tf);  

           } else if (v instanceof Button) {  

              ((Button) v).setTypeface(tf);  

           } else if (v instanceof EditText) {  

              ((EditText) v).setTypeface(tf);  

           } else if (v instanceof ViewGroup) {  

              changeFonts((ViewGroup) v, act,type);  

           }  

       }   

    }  

    /**

     * Change a single view's text font

     * @param v view

     * @param type font type

     */

    public static void changeViewFont(View v,int type)

    {

    Typeface tf=getTypeface(v, type);

        if (v instanceof TextView) {  

            ((TextView) v).setTypeface(tf);  

         } else if (v instanceof Button) {  

            ((Button) v).setTypeface(tf);  

         } else if (v instanceof EditText) {  

            ((EditText) v).setTypeface(tf);

         }

    }

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