carolineleung

    public void blur(final Context context, final float radius, final BitmapBlurCallback callback) {
        mBlurTask = new AsyncTask< Integer, Void, Bitmap >() {

            @Override
            protected Bitmap doInBackground(Integer... params) {
                if (sRS == null) {
                    sRS = RenderScript.create(context);
                }
                Allocation srcAlloc = Allocation.createFromBitmap(sRS, mSrc);
                Allocation dstAlloc = Allocation.createTyped(sRS, srcAlloc.getType());

carolineleung

    private void createCircularShader(Bitmap bm) {
        // Shader must be based on Bitmap width/height because parent applies scale type.
        float w = bm.getWidth();
        float h = bm.getHeight();
        float cx = 0.5f * w;
        float cy = 0.5f * h;
        int[] colors = { 0xffffffff, 0xffffffff, 0x00000000 };
        float[] positions = { 0.0f, 0.99f, 1.0f };

        RadialGradient gradient = new RadialGradient(cx, cy, 0.5f * Math.min(w, h), colors, positions, Shader.TileMode.CLAMP);

carolineleung

    public interface TabHolderScrollingContent {

        /**
         * Adjust content scroll position based on sticky tab bar position.
         */
        void adjustScroll(int tabBarTop);
    }

carolineleung

@Override
 public void adjustScroll(int tabBarTop) {
    if (tabBarTop == 0 && mScrollView.getScrollY() > mTopImageHeight - mTabBarHeight) {
        // ScrollView does not need to manually adjust scroll, as the top Tab bar is at its sticky position
        return;
    }
    mScrollView.scrollTo(mScrollView.getScrollX(), -tabBarTop + mTopImageHeight - mTabBarHeight);
}

carolineleung

    mainView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
        private int mLastViewHeight;

        @Override
        public void onGlobalLayout() {
            int newHeight = mainView.getHeight();
            if (newHeight != mLastViewHeight) {
                SparseArrayCompat< TabHolderScrollingContent > tabHolderScrollingContent = mViewPagerAdapter.getTabHolderScrollingContent();
                TabHolderScrollingContent content = tabHolderScrollingContent.valueAt(mViewPager.getCurrentItem());
                content.adjustScroll(mStickyTabBar.getTop());

carolineleung

@Override
public void adjustScroll(int tabBarTop) {
    if (tabBarTop == 0 && mListView.getFirstVisiblePosition() >= 1) {
        // ListView does not need to adjust scroll, as the top tab bar is its sticky position
        return;
    }
    mListView.setSelectionFromTop(1, tabBarTop);
}

carolineleung

        mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                // Update content that just became visible
                int currentItem = mViewPager.getCurrentItem();
                if (positionOffsetPixels > 0) {
                    SparseArrayCompat< TabHolderScrollingContent > tabHolderScrollingContent = mViewPagerAdapter.getTabHolderScrollingContent();
                    
                    TabHolderScrollingContent fragmentContent = null;