android.support.v17.leanback.widget.VerticalGridView Java Examples

@Override
public void onActivityCreated(Bundle savedInstanceState) {
	super.onActivityCreated(savedInstanceState);

	customSetBackground(R.color.fastlane_background);
	setHeaderAdapter();

	setCustomPadding();

	/**
	 * The setOnItemSelectedListener has been not only deprecated, but brutally removed by
	 * Google. To get around this limitation, I went to see how BaseRowFragment handled it.
	 * Turns out it sets a listener to the GridView (which is a RecyclerView): there you go.
	 */
	VerticalGridView gridView = ((MainActivity) getActivity()).getVerticalGridView(this);
	gridView.setOnChildSelectedListener(new OnChildSelectedListener() {
		@Override
		public void onChildSelected(ViewGroup viewGroup, View view, int i, long l) {
			Object obj = ((ListRow) getAdapter().get(i)).getAdapter().get(0);
			getFragmentManager().beginTransaction().replace(R.id.rows_container, (Fragment) obj).commit();
			((MainActivity) getActivity()).updateCurrentFragment((Fragment) obj);
		}
	});

}
 

@Override
public void onCreate(ItemBridgeAdapter.ViewHolder vh) {
    VerticalGridView listView = getVerticalGridView();
    if (listView != null && ((RowPresenter) vh.getPresenter()).canDrawOutOfBounds()) {
        listView.setClipChildren(false);
    }
    setupSharedViewPool(vh);
    mViewsCreated = true;
    vh.setExtraObject(new RowViewHolderExtra(vh));
    // selected state is initialized to false, then driven by grid view onChildSelected
    // events.  When there is rebind, grid view fires onChildSelected event properly.
    // So we don't need do anything special later in onBind or onAttachedToWindow.
    setRowViewSelected(vh, false, true);
    if (mExternalAdapterListener != null) {
        mExternalAdapterListener.onCreate(vh);
    }
}
 

@Override
protected void onRowSelected(ViewGroup parent, View view, int position, long id) {
    VerticalGridView listView = getVerticalGridView();
    if (listView == null) {
        return;
    }
    ItemBridgeAdapter.ViewHolder vh = (view == null) ? null :
        (ItemBridgeAdapter.ViewHolder) listView.getChildViewHolder(view);

    if (mSelectedViewHolder != vh) {
        if (DEBUG) Log.v(TAG, "new row selected position " + position + " view " + view);

        if (mSelectedViewHolder != null) {
            setRowViewSelected(mSelectedViewHolder, false, false);
        }
        mSelectedViewHolder = vh;
        if (mSelectedViewHolder != null) {
            setRowViewSelected(mSelectedViewHolder, true, false);
        }
    }
}
 

/**
 * Set the visibility of titles/hovercard of browse rows.
 */
public void setExpand(boolean expand) {
    mExpand = expand;
    VerticalGridView listView = getVerticalGridView();
    if (listView != null) {
        if (!mInTransition) ((ViewGroup) mScaleFrameLayout.getParent()).setClipChildren(!needsScale());
        updateRowScaling();
        final int count = listView.getChildCount();
        if (DEBUG) Log.v(TAG, "setExpand " + expand + " count " + count);
        for (int i = 0; i < count; i++) {
            View view = listView.getChildAt(i);
            ItemBridgeAdapter.ViewHolder vh = (ItemBridgeAdapter.ViewHolder) listView.getChildViewHolder(view);
            setRowViewExpanded(vh, mExpand);
        }
    }
}
 

@Override
void onTransitionStart() {
    super.onTransitionStart();
    if (!mHeadersEnabled) {
        // When enabling headers fragment,  the RowHeaderView gets a focus but
        // isShown() is still false because its parent is INVSIBILE, accessibility
        // event is not sent.
        // Workaround is: prevent focus to a child view during transition and put
        // focus on it after transition is done.
        final VerticalGridView listView = getVerticalGridView();
        if (listView != null) {
            listView.setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
            if (listView.hasFocus()) {
                listView.requestFocus();
            }
        }
    }
}
 

@Override
void setVerticalGridViewLayout(VerticalGridView listview) {
    if (listview == null) {
        return;
    }
    // Padding affects alignment when last row is focused
    // (last is first when there's only one row).
    setBottomPadding(listview, mPaddingBottom);

    // Item alignment affects focused row that isn't the last.
    listview.setItemAlignmentOffset(mAlignPosition);
    listview.setItemAlignmentOffsetPercent(100);

    // Push rows to the bottom.
    listview.setWindowAlignmentOffset(0);
    listview.setWindowAlignmentOffsetPercent(100);
    listview.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_HIGH_EDGE);
}
 

@Override
void setVerticalGridViewLayout(VerticalGridView listview) {
    if (listview == null) {
        return;
    }
    // Padding affects alignment when last row is focused
    // (last is first when there's only one row).
    setBottomPadding(listview, mPaddingBottom);

    // Item alignment affects focused row that isn't the last.
    listview.setItemAlignmentOffset(mAlignPosition);
    listview.setItemAlignmentOffsetPercent(100);

    // Push rows to the bottom.
    listview.setWindowAlignmentOffset(0);
    listview.setWindowAlignmentOffsetPercent(100);
    listview.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_HIGH_EDGE);
}
 

/**
 * Set the visibility of titles/hovercard of browse rows.
 */
public void setExpand(boolean expand) {
    mExpand = expand;
    VerticalGridView listView = getVerticalGridView();
    if (listView != null) {
        if (!mInTransition) ((ViewGroup) mScaleFrameLayout.getParent()).setClipChildren(!needsScale());
        updateRowScaling();
        final int count = listView.getChildCount();
        if (DEBUG) Log.v(TAG, "setExpand " + expand + " count " + count);
        for (int i = 0; i < count; i++) {
            View view = listView.getChildAt(i);
            ItemBridgeAdapter.ViewHolder vh = (ItemBridgeAdapter.ViewHolder) listView.getChildViewHolder(view);
            setRowViewExpanded(vh, mExpand);
        }
    }
}
 

@Override
protected void onRowSelected(ViewGroup parent, View view, int position, long id) {
    VerticalGridView listView = getVerticalGridView();
    if (listView == null) {
        return;
    }
    ItemBridgeAdapter.ViewHolder vh = (view == null) ? null :
        (ItemBridgeAdapter.ViewHolder) listView.getChildViewHolder(view);

    if (mSelectedViewHolder != vh) {
        if (DEBUG) Log.v(TAG, "new row selected position " + position + " view " + view);

        if (mSelectedViewHolder != null) {
            setRowViewSelected(mSelectedViewHolder, false, false);
        }
        mSelectedViewHolder = vh;
        if (mSelectedViewHolder != null) {
            setRowViewSelected(mSelectedViewHolder, true, false);
        }
    }
}
 

@Override
public void onCreate(ItemBridgeAdapter.ViewHolder vh) {
    VerticalGridView listView = getVerticalGridView();
    if (listView != null && ((RowPresenter) vh.getPresenter()).canDrawOutOfBounds()) {
        listView.setClipChildren(false);
    }
    setupSharedViewPool(vh);
    mViewsCreated = true;
    vh.setExtraObject(new RowViewHolderExtra(vh));
    // selected state is initialized to false, then driven by grid view onChildSelected
    // events.  When there is rebind, grid view fires onChildSelected event properly.
    // So we don't need do anything special later in onBind or onAttachedToWindow.
    setRowViewSelected(vh, false, true);
    if (mExternalAdapterListener != null) {
        mExternalAdapterListener.onCreate(vh);
    }
}
 

@Override
void onTransitionStart() {
    super.onTransitionStart();
    if (!mHeadersEnabled) {
        // When enabling headers fragment,  the RowHeaderView gets a focus but
        // isShown() is still false because its parent is INVSIBILE, accessibility
        // event is not sent.
        // Workaround is: prevent focus to a child view during transition and put
        // focus on it after transition is done.
        final VerticalGridView listView = getVerticalGridView();
        if (listView != null) {
            listView.setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
            if (listView.hasFocus()) {
                listView.requestFocus();
            }
        }
    }
}
 

private void updateListViewVisibility() {
    final VerticalGridView listView = getVerticalGridView();
    if (listView != null) {
        getView().setVisibility(mHeadersGone ? View.GONE : View.VISIBLE);
        if (!mHeadersGone) {
            if (mHeadersEnabled) {
                listView.setChildrenVisibility(View.VISIBLE);
            } else {
                listView.setChildrenVisibility(View.INVISIBLE);
            }
        }
    }
}
 

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    final VerticalGridView listView = getVerticalGridView();
    if (listView == null) {
        return;
    }
    if (getBridgeAdapter() != null) {
        FocusHighlightHelper.setupHeaderItemFocusHighlight(listView);
    }
    view.setBackgroundColor(getBackgroundColor());
    updateFadingEdgeToBrandColor(getBackgroundColor());
    updateListViewVisibility();
}
 

@Override
protected ViewHolder createGridViewHolder(ViewGroup parent) {
	View root = LayoutInflater.from(parent.getContext()).inflate(R.layout.presenter_justified_vertical_grid,
			parent, false);

	gridView = (VerticalGridView) root.findViewById(android.support.v17.leanback.R.id.browse_grid);

	return new ViewHolder(gridView);
}
 

private void updateListViewVisibility() {
    final VerticalGridView listView = getVerticalGridView();
    if (listView != null) {
        getView().setVisibility(mHeadersGone ? View.GONE : View.VISIBLE);
        if (!mHeadersGone) {
            if (mHeadersEnabled) {
                listView.setChildrenVisibility(View.VISIBLE);
            } else {
                listView.setChildrenVisibility(View.INVISIBLE);
            }
        }
    }
}
 

void setItemAlignment() {
    if (mVerticalGridView != null) {
        // align the top edge of item
        mVerticalGridView.setItemAlignmentOffset(0);
        mVerticalGridView.setItemAlignmentOffsetPercent(
                VerticalGridView.ITEM_ALIGN_OFFSET_PERCENT_DISABLED);
    }
}
 

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    final VerticalGridView listView = getVerticalGridView();
    if (listView == null) {
        return;
    }
    if (getBridgeAdapter() != null) {
        FocusHighlightHelper.setupHeaderItemFocusHighlight(listView);
    }
    view.setBackgroundColor(getBackgroundColor());
    updateFadingEdgeToBrandColor(getBackgroundColor());
    updateListViewVisibility();
}
 

void setWindowAlignmentFromTop(int alignedTop) {
    if (mVerticalGridView != null) {
        // align to a fixed position from top
        mVerticalGridView.setWindowAlignmentOffset(alignedTop);
        mVerticalGridView.setWindowAlignmentOffsetPercent(
                VerticalGridView.WINDOW_ALIGN_OFFSET_PERCENT_DISABLED);
        mVerticalGridView.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_NO_EDGE);
    }
}
 

void setVerticalGridViewLayout(VerticalGridView listview) {
    // align the top edge of item to a fixed position
    listview.setItemAlignmentOffset(0);
    listview.setItemAlignmentOffsetPercent(VerticalGridView.ITEM_ALIGN_OFFSET_PERCENT_DISABLED);
    listview.setWindowAlignmentOffset(mContainerListAlignTop);
    listview.setWindowAlignmentOffsetPercent(VerticalGridView.WINDOW_ALIGN_OFFSET_PERCENT_DISABLED);
    listview.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_NO_EDGE);
}
 

private void freezeRows(boolean freeze) {
    VerticalGridView verticalView = getVerticalGridView();
    if (verticalView != null) {
        final int count = verticalView.getChildCount();
        for (int i = 0; i < count; i++) {
            ItemBridgeAdapter.ViewHolder ibvh = (ItemBridgeAdapter.ViewHolder)
                verticalView.getChildViewHolder(verticalView.getChildAt(i));
            RowPresenter rowPresenter = (RowPresenter) ibvh.getPresenter();
            RowPresenter.ViewHolder vh = rowPresenter.getRowViewHolder(ibvh.getViewHolder());
            rowPresenter.freeze(vh, freeze);
        }
    }
}
 

@Override
void onTransitionEnd() {
    if (mHeadersEnabled) {
        final VerticalGridView listView = getVerticalGridView();
        if (listView != null) {
            listView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
            if (listView.hasFocus()) {
                listView.requestFocus();
            }
        }
    }
    super.onTransitionEnd();
}
 

@Override
void setWindowAlignmentFromTop(int alignedTop) {
    mAlignedTop = alignedTop;
    final VerticalGridView gridView = getVerticalGridView();
    if (gridView != null) {
        updateWindowAlignOffset();
        // align to a fixed position from top
        gridView.setWindowAlignmentOffsetPercent(
                VerticalGridView.WINDOW_ALIGN_OFFSET_PERCENT_DISABLED);
        gridView.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_NO_EDGE);
    }
}
 

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    if (DEBUG) Log.v(TAG, "onViewCreated");
    super.onViewCreated(view, savedInstanceState);
    // Align the top edge of child with id row_content.
    // Need set this for directly using RowsFragment.
    getVerticalGridView().setItemAlignmentViewId(R.id.row_content);
    getVerticalGridView().setSaveChildrenPolicy(VerticalGridView.SAVE_LIMITED_CHILD);

    ((ViewGroup) mScaleFrameLayout.getParent()).setClipChildren(!needsScale());

    mRecycledViewPool = null;
    mPresenterMapper = null;
}
 

/**
 * Sets an item selection listener.
 * @deprecated Use {@link #setOnItemViewSelectedListener(OnItemViewSelectedListener)}
 */
public void setOnItemSelectedListener(OnItemSelectedListener listener) {
    mOnItemSelectedListener = listener;
    VerticalGridView listView = getVerticalGridView();
    if (listView != null) {
        final int count = listView.getChildCount();
        for (int i = 0; i < count; i++) {
            View view = listView.getChildAt(i);
            ItemBridgeAdapter.ViewHolder vh = (ItemBridgeAdapter.ViewHolder)
                    listView.getChildViewHolder(view);
            setOnItemSelectedListener(vh, mOnItemSelectedListener);
        }
    }
}
 

/**
 * Sets an item selection listener.
 */
public void setOnItemViewSelectedListener(OnItemViewSelectedListener listener) {
    mOnItemViewSelectedListener = listener;
    VerticalGridView listView = getVerticalGridView();
    if (listView != null) {
        final int count = listView.getChildCount();
        for (int i = 0; i < count; i++) {
            View view = listView.getChildAt(i);
            ItemBridgeAdapter.ViewHolder vh = (ItemBridgeAdapter.ViewHolder)
                    listView.getChildViewHolder(view);
            setOnItemViewSelectedListener(vh, mOnItemViewSelectedListener);
        }
    }
}
 

private void freezeRows(boolean freeze) {
    VerticalGridView verticalView = getVerticalGridView();
    if (verticalView != null) {
        final int count = verticalView.getChildCount();
        for (int i = 0; i < count; i++) {
            ItemBridgeAdapter.ViewHolder ibvh = (ItemBridgeAdapter.ViewHolder)
                verticalView.getChildViewHolder(verticalView.getChildAt(i));
            RowPresenter rowPresenter = (RowPresenter) ibvh.getPresenter();
            RowPresenter.ViewHolder vh = rowPresenter.getRowViewHolder(ibvh.getViewHolder());
            rowPresenter.freeze(vh, freeze);
        }
    }
}
 

private void insertHeader(LayoutInflater inflater, FrameLayout container) {
    VerticalGridView grid = findFirstGrid(container);
    if (grid != null) {
        View header = inflater.inflate(R.layout.episode_details_view, container, false);
        View bottom = inflater.inflate(R.layout.dark_gradient, container, false);
        container.addView(header, 0);
        container.addView(bottom, 1);
        setupGridAlignment(grid);
        setupHeaderView(grid, header);
        setupGradient(bottom);
    } else {
        Utils.showToast(getActivity(), "No Grid Found!");
    }
}
 

private void setupHeaderView(VerticalGridView grid, View header) {
    mDetailView = new EpisodeDetailsView(getActivity(), header);
    if (mCurrentEpisode != null) {
        mDetailView.setEpisode(mCurrentEpisode);
    }
    int height = getResources().getDimensionPixelSize(R.dimen.episode_detail_padding_bottom);
    FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) header.getLayoutParams();
    lp.height = mHeaderHeight + height;
    header.setLayoutParams(lp);
}
 

private void setupGridAlignment(VerticalGridView grid) {
    int cardHeight = getResources().getDimensionPixelSize(R.dimen.card_height);
    int titleHeight = getResources().getDimensionPixelSize(R.dimen.lb_browse_header_height);
    grid.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_LOW_EDGE);
    grid.setWindowAlignmentOffset(cardHeight + titleHeight);
    grid.setWindowAlignmentOffsetPercent(VerticalGridView.WINDOW_ALIGN_OFFSET_PERCENT_DISABLED);

    FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) grid.getLayoutParams();
    lp.topMargin = mHeaderHeight;
    grid.setLayoutParams(lp);
}
 

private VerticalGridView findFirstGrid(ViewGroup container) {
    for (int i = 0, k = container.getChildCount(); i < k; i++) {
        View view = container.getChildAt(i);
        if (view instanceof VerticalGridView) {
            return (VerticalGridView) view;
        }
    }
    return null;
}