Example usage for android.widget ListAdapter getCount

Introduction

In this page you can find the example usage for android.widget ListAdapter getCount.

Prototype

int getCount();

Source Link

Document

How many items are in the data set represented by this Adapter.

Usage

From source file:com.dishes.views.stageredggridview.StaggeredGridView.java

int lookForSelectablePosition(int position, boolean lookDown) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }//from  ww  w  .j  a v a2 s  .c  om

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookDown) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

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From source file:com.huewu.pla.lib.internal.PLA_ListView.java

/**
 * Measures the height of the given range of children (inclusive) and
 * returns the height with this ListView's padding and divider heights
 * included. If maxHeight is provided, the measuring will stop when the
 * current height reaches maxHeight.//w  ww.j  ava  2  s  . co  m
 * 
 * @param widthMeasureSpec
 *            The width measure spec to be given to a child's
 *            {@link View#measure(int, int)}.
 * @param startPosition
 *            The position of the first child to be shown.
 * @param endPosition
 *            The (inclusive) position of the last child to be shown.
 *            Specify {@link #NO_POSITION} if the last child should be the
 *            last available child from the adapter.
 * @param maxHeight
 *            The maximum height that will be returned (if all the children
 *            don't fit in this value, this value will be returned).
 * @param disallowPartialChildPosition
 *            In general, whether the returned height should only contain
 *            entire children. This is more powerful--it is the first
 *            inclusive position at which partial children will not be
 *            allowed. Example: it looks nice to have at least 3 completely
 *            visible children, and in portrait this will most likely fit;
 *            but in landscape there could be times when even 2 children can
 *            not be completely shown, so a value of 2 (remember, inclusive)
 *            would be good (assuming startPosition is 0).
 * @return The height of this ListView with the given children.
 */
final int measureHeightOfChildren(int widthMeasureSpec, int startPosition, int endPosition, final int maxHeight,
        int disallowPartialChildPosition) {

    final ListAdapter adapter = mAdapter;
    if (adapter == null) {
        return mListPadding.top + mListPadding.bottom;
    }

    // Include the padding of the list
    int returnedHeight = mListPadding.top + mListPadding.bottom;
    final int dividerHeight = ((mDividerHeight > 0) && mDivider != null) ? mDividerHeight : 0;
    // The previous height value that was less than maxHeight and contained
    // no partial children
    int prevHeightWithoutPartialChild = 0;
    int i;
    View child;

    // mItemCount - 1 since endPosition parameter is inclusive
    endPosition = (endPosition == NO_POSITION) ? adapter.getCount() - 1 : endPosition;
    final PLA_AbsListView.RecycleBin recycleBin = mRecycler;
    final boolean recyle = recycleOnMeasure();
    final boolean[] isScrap = mIsScrap;

    for (i = startPosition; i <= endPosition; ++i) {
        child = obtainView(i, isScrap);

        measureScrapChild(child, i, widthMeasureSpec);

        if (i > 0) {
            // Count the divider for all but one child
            returnedHeight += dividerHeight;
        }

        // Recycle the view before we possibly return from the method
        if (recyle && recycleBin.shouldRecycleViewType(((LayoutParams) child.getLayoutParams()).viewType)) {
            recycleBin.addScrapView(child);
        }

        returnedHeight += child.getMeasuredHeight();

        if (returnedHeight >= maxHeight) {
            // We went over, figure out which height to return. If
            // returnedHeight > maxHeight,
            // then the i'th position did not fit completely.
            return (disallowPartialChildPosition >= 0) // Disallowing is
                    // enabled (> -1)
                    && (i > disallowPartialChildPosition) // We've past the
                    // min pos
                    && (prevHeightWithoutPartialChild > 0) // We have a prev
                    // height
                    && (returnedHeight != maxHeight) // i'th child did not
                            // fit completely
                            ? prevHeightWithoutPartialChild
                            : maxHeight;
        }

        if ((disallowPartialChildPosition >= 0) && (i >= disallowPartialChildPosition)) {
            prevHeightWithoutPartialChild = returnedHeight;
        }
    }

    // At this point, we went through the range of children, and they each
    // completely fit, so return the returnedHeight
    return returnedHeight;
}

---

From source file:org.bangbang.support.v4.widget.HListView.java

@Override
    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
        boolean populated = super.dispatchPopulateAccessibilityEvent(event);

        // If the item count is less than 15 then subtract disabled items from the count and
        // position. Otherwise ignore disabled items.
        if (!populated) {
            int itemCount = 0;
            int currentItemIndex = getSelectedItemPosition();

            ListAdapter adapter = getAdapter();
            if (adapter != null) {
                final int count = adapter.getCount();
                if (count < 15) {
                    for (int i = 0; i < count; i++) {
                        if (adapter.isEnabled(i)) {
                            itemCount++;
                        } else if (i <= currentItemIndex) {
                            currentItemIndex--;
                        }//from   ww w .j  a v a  2  s. com
                    }
                } else {
                    itemCount = count;
                }
            }

            event.setItemCount(itemCount);
            event.setCurrentItemIndex(currentItemIndex);
        }

        return populated;
    }

---

From source file:org.bangbang.support.v4.widget.HListView.java

/**
     * Find a position that can be selected (i.e., is not a separator).
     */* w  ww. ja  v  a 2s.co m*/
     * @param position The starting position to look at.
     * @param lookDown Whether to look down for other positions.
     * @return The next selectable position starting at position and then searching either up or
     *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
     */
    @Override
    int lookForSelectablePosition(int position, boolean lookDown) {
        final ListAdapter adapter = mAdapter;
        if (adapter == null || isInTouchMode()) {
            return INVALID_POSITION;
        }

        final int count = adapter.getCount();
        if (!mAreAllItemsSelectable) {
            if (lookDown) {
                position = Math.max(0, position);
                while (position < count && !adapter.isEnabled(position)) {
                    position++;
                }
            } else {
                position = Math.min(position, count - 1);
                while (position >= 0 && !adapter.isEnabled(position)) {
                    position--;
                }
            }

            if (position < 0 || position >= count) {
                return INVALID_POSITION;
            }
            return position;
        } else {
            if (position < 0 || position >= count) {
                return INVALID_POSITION;
            }
            return position;
        }
    }

---

From source file:com.appunite.list.HorizontalListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 *
 * @param position The starting position to look at.
 * @param lookRight Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or
 *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
 *///from  ww  w .j a va  2  s . c  o  m
@Override
int lookForSelectablePosition(int position, boolean lookRight) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookRight) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

---

From source file:com.awrtechnologies.carbudgetsales.hlistview.widget.HListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 * /*  w w w.j av a  2s  .co  m*/
 * @param position
 *           The starting position to look at.
 * @param lookDown
 *           Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or down. Returns
 *         {@link #INVALID_POSITION} if nothing can be found.
 */
@Override
protected int lookForSelectablePosition(int position, boolean lookDown) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookDown) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

---

From source file:com.appunite.list.ListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 *
 * @param position The starting position to look at.
 * @param lookDown Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or
 *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
 *//*from  ww w. j av  a2 s  . c o m*/
@Override
int lookForSelectablePosition(int position, boolean lookDown) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookDown) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

---

From source file:com.awrtechnologies.carbudgetsales.hlistview.widget.HListView.java

@Override
protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
    super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);

    final ListAdapter adapter = mAdapter;
    int closetChildIndex = -1;
    int closestChildLeft = 0;
    if (adapter != null && gainFocus && previouslyFocusedRect != null) {
        previouslyFocusedRect.offset(getScrollX(), getScrollY());

        // Don't cache the result of getChildCount or mFirstPosition here,
        // it could change in layoutChildren.
        if (adapter.getCount() < getChildCount() + mFirstPosition) {
            mLayoutMode = LAYOUT_NORMAL;
            layoutChildren();//from w  w  w .j a  va2 s.  c  om
        }

        // figure out which item should be selected based on previously
        // focused rect
        Rect otherRect = mTempRect;
        int minDistance = Integer.MAX_VALUE;
        final int childCount = getChildCount();
        final int firstPosition = mFirstPosition;

        for (int i = 0; i < childCount; i++) {
            // only consider selectable views
            if (!adapter.isEnabled(firstPosition + i)) {
                continue;
            }

            View other = getChildAt(i);
            other.getDrawingRect(otherRect);
            offsetDescendantRectToMyCoords(other, otherRect);
            int distance = getDistance(previouslyFocusedRect, otherRect, direction);

            if (distance < minDistance) {
                minDistance = distance;
                closetChildIndex = i;
                closestChildLeft = other.getLeft();
            }
        }
    }

    if (closetChildIndex >= 0) {
        setSelectionFromLeft(closetChildIndex + mFirstPosition, closestChildLeft);
    } else {
        requestLayout();
    }
}

---

From source file:com.appunite.list.HorizontalListView.java

@Override
protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
    super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);

    final ListAdapter adapter = mAdapter;
    int closetChildIndex = -1;
    int closestChildLeft = 0;
    if (adapter != null && gainFocus && previouslyFocusedRect != null) {
        final int scrollX = getScrollX();
        final int scrollY = getScrollY();
        previouslyFocusedRect.offset(scrollX, scrollY);

        // Don't cache the result of getChildCount or mFirstPosition here,
        // it could change in layoutChildren.
        if (adapter.getCount() < getChildCount() + mFirstPosition) {
            mLayoutMode = LAYOUT_NORMAL;
            layoutChildren();//from   w  w  w . j av a 2 s.c o  m
        }

        // figure out which item should be selected based on previously
        // focused rect
        Rect otherRect = mTempRect;
        int minDistance = Integer.MAX_VALUE;
        final int childCount = getChildCount();
        final int firstPosition = mFirstPosition;

        for (int i = 0; i < childCount; i++) {
            // only consider selectable views
            if (!adapter.isEnabled(firstPosition + i)) {
                continue;
            }

            View other = getChildAt(i);
            other.getDrawingRect(otherRect);
            offsetDescendantRectToMyCoords(other, otherRect);
            int distance = getDistance(previouslyFocusedRect, otherRect, direction);

            if (distance < minDistance) {
                minDistance = distance;
                closetChildIndex = i;
                closestChildLeft = other.getLeft();
            }
        }
    }

    if (closetChildIndex >= 0) {
        setSelectionFromLeft(closetChildIndex + mFirstPosition, closestChildLeft);
    } else {
        requestLayout();
    }
}

---

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