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public boolean dispatchTouchEvent(MotionEvent ev) {  
    final int action = ev.getAction();  
    final float xf = ev.getX();  
    final float yf = ev.getY();  
    final float scrolledXFloat = xf + mScrollX;  
    final float scrolledYFloat = yf + mScrollY;  
    final Rect frame = mTempRect;  
    boolean disallowIntercept = (mGroupFlags & FLAG_DISALLOW_INTERCEPT) != 0;  
    if (action == MotionEvent.ACTION_DOWN) {  
        if (mMotionTarget != null) {  

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public class SnappingLinearLayoutManager extends LinearLayoutManager {
        private RecyclerView.SmoothScroller smoothScroller;

        public SnappingLinearLayoutManager(Context context) {
            super(context, VERTICAL, false);
        }

        @Override
        public void smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state,
                                           int position) {

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public class CustomSpan {
    private Context mContext;
    private SpannableStringBuilder mSpannableString;
    private int mStart;
    private int mEnd;

    public CustomSpan(Context context) {
        mContext = context;
        mSpannableString = new SpannableStringBuilder("");
    }

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public class CustomTypefaceSpan extends MetricAffectingSpan {
    private final Typeface mTypeface;

    public CustomTypefaceSpan(final Typeface typeface) {
        this.mTypeface = typeface;
    }

    @Override
    public void updateDrawState(final TextPaint drawState) {
        apply(drawState);

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import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;

/**
 * Created: chiemy
 * Date: 17/1/4
 * Description: 为解决 ViewPager 内 Fragment 嵌套 ViewPager, setUserVisibleHint 方法不准确的问题的帮助类
 */

public class NestedFragmentHelper implements ViewPager.OnPageChangeListener {

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/**
 * Created: chiemy
 * Date: 16/11/22
 * Description: 可控制显示时长, 可点击的Toast
 */
public class ExtendToast {
    public static final int LENGTH_ALWAYS = 0;
    public static final int LENGTH_SHORT = 2;

    private Toast toast;

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public Bitmap getScreenshotFromRecyclerView(RecyclerView view) {
        RecyclerView.Adapter adapter = view.getAdapter();
        Bitmap bigBitmap = null;
        if (adapter != null) {
            int size = adapter.getItemCount();
            int height = 0;
            Paint paint = new Paint();
            int iHeight = 0;
            final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);

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public Bitmap blurBitmap(Bitmap bitmap){
		
		//Let's create an empty bitmap with the same size of the bitmap we want to blur
		Bitmap outBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
		
		//Instantiate a new Renderscript
		RenderScript rs = RenderScript.create(getApplicationContext());
		
		//Create an Intrinsic Blur Script using the Renderscript
		ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

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/*
 * Copyright 2014 Chris Banes
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

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private AudioManager.OnAudioFocusChangeListener mOnAudioFocusChangeListener;
//…
mOnAudioFocusChangeListener = new AudioManager.OnAudioFocusChangeListener() {
 
			@Override
			public void onAudioFocusChange(int focusChange) {
				switch (focusChange) {
				case AudioManager.AUDIOFOCUS_GAIN:
					Log.i(TAG, "AUDIOFOCUS_GAIN");
                                  // Set volume level to desired levels