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public class IconCounterUtils {
    public static void setCounterValue(Context mContext, LayerDrawable icon, int count) {
        CounterDrawable mCounterDrawable;

        Drawable reuse = icon.findDrawableByLayerId(R.id.ic_counter);
        if (reuse != null && reuse instanceof CounterDrawable) {
            mCounterDrawable = (CounterDrawable) reuse;
        } else {
            mCounterDrawable = new CounterDrawable(mContext);
        }

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public class AppTextView extends TextView {

    public Paint paint;
    public boolean addStrike = false;

    public AppTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        if (!isInEditMode()) init(attrs);
    }

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 /**
     * Tries to acquire a partial wake lock if not already acquired. Logs errors
     * and gives up trying in case the wake lock cannot be acquired.
     */

    /**
     * Acquire a wake lock if not already acquired.
     *
     * @param context  the context
     * @param wakeLock wake lock or null

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public class CustomViewPager extends ViewPager {

    float mStartDragX;
    OnSwipeOutListener mOnSwipeOutListener;

    public CustomViewPager(Context context) {
        super(context);
    }

    public CustomViewPager(Context context, AttributeSet attrs) {

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package com.hashlearn.common.utils;

import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.text.style.DynamicDrawableSpan;

import java.lang.ref.WeakReference;

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/*
    This method will create a spannable which is a displayable styled text. It
    also has a custom ImageGetter based on Picasso for loading <img> tags inside the html.
    We use this for rendering formulas in challenges
     */

    public static Spannable getSpannableHtmlWithImageGetter(AppTextView view, String value) {
        PicassoImageGetter imageGetter = new PicassoImageGetter(view);
        Spannable html;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {

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public class PicassoImageGetter implements Html.ImageGetter {

    private AppTextView textView = null;

    public PicassoImageGetter() {

    }

    public PicassoImageGetter(AppTextView target) {
        textView = target;

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Libraries

• jQuery - The de-facto library for the modern age. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
• Backbone - Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
• AngularJS - Conventions based MVC framework for HTML5 apps.
• Underscore - Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.
• lawnchair - Key/value store adapter for indexdb, localStorage

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console