Example usage for android.view View getParent

Introduction

In this page you can find the example usage for android.view View getParent.

Prototype

public final ViewParent getParent() 

Source Link

Document

Gets the parent of this view.

Usage

From source file:com.minoon.stackviewpagersample.StackViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this) {
        currentFocused = null;//from w w w. j av a2s. co  m
    } else if (currentFocused != null) {
        boolean isChild = false;
        for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                .getParent()) {
            if (parent == this) {
                isChild = true;
                break;
            }
        }
        if (!isChild) {
            // This would cause the focus search down below to fail in fun ways.
            final StringBuilder sb = new StringBuilder();
            sb.append(currentFocused.getClass().getSimpleName());
            for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                    .getParent()) {
                sb.append(" => ").append(parent.getClass().getSimpleName());
            }
            //                Log.e(TAG, "arrowScroll tried to find focus based on non-child " +
            //                        "current focused view " + sb.toString());
            currentFocused = null;
        }
    }

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft >= currLeft) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft <= currLeft) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:com.android.backups.StaggeredGridViewByJaumo.java

/**
 * Should be called with mPopulating set to true
 * /*from   ww w. ja  v  a2s  .  c om*/
 * @param fromPosition
 *            Position to start filling from
 * @param overhang
 *            the number of extra pixels to fill beyond the current top edge
 * @return the max overhang beyond the beginning of the view of any added
 *         items at the top
 */
final int fillUp(int fromPosition, int overhang) {
    final int paddingLeft = getPaddingLeft();
    mColWidth = getColWidth(fromPosition);
    final int gridTop = getPaddingTop();
    final int fillTo = gridTop - overhang;
    int nextCol = getNextColumnUp();
    int position = fromPosition;

    while (nextCol >= 0 && mItemTops[nextCol] > fillTo && position >= 0) {
        // make sure the nextCol is correct. check to see if has been mapped
        // otherwise stick to getNextColumnUp()
        if (!mColMappings.get(nextCol).contains(position)) {
            for (int i = 0; i < mColMappings.size(); i++) {
                if (mColMappings.get(i).contains(position)) {
                    nextCol = i;
                    break;
                }
            }
        }

        final View child = obtainView(position, null);

        if (child == null)
            continue;

        LayoutParams lp = (LayoutParams) child.getLayoutParams();

        if (child.getParent() != this) {
            if (mInLayout) {
                addViewInLayout(child, 0, lp);
            } else {
                addView(child, 0);
            }
        }

        final int itemMargin = getItemMargin(lp.position);
        final int colWidth = getColWidth(lp.position);
        final int span = Math.min(mColCount, lp.span);
        final int widthSize = colWidth * span + itemMargin * (span - 1);
        final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);

        LayoutRecord rec;
        if (span > 1) {
            rec = getNextRecordUp(position, span);
            nextCol = 0;
        } else {
            rec = mLayoutRecords.get(position);
        }

        boolean invalidateBefore = false;
        if (rec == null) {
            rec = new LayoutRecord();
            mLayoutRecords.put(position, rec);
            rec.column = nextCol;
            rec.span = span;
        } else if (span != rec.span) {
            rec.span = span;
            rec.column = nextCol;
            invalidateBefore = true;
        }

        if (mHasStableIds) {
            final long id = mAdapter.getItemId(position);
            rec.id = id;
            lp.id = id;
        }

        lp.column = nextCol;

        final int heightSpec;
        if (lp.height == LayoutParams.WRAP_CONTENT) {
            heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
        } else {
            heightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
        }
        child.measure(widthSpec, heightSpec);

        final int childHeight = child.getMeasuredHeight();
        if (invalidateBefore || (childHeight != rec.height && rec.height > 0)) {
            invalidateLayoutRecordsBeforePosition(position);
        }
        rec.height = childHeight;

        final int startFrom;
        if (span > 1) {
            int lowest = mItemTops[nextCol];
            final int colEnd = Math.min(mColCount, nextCol + lp.span);
            for (int i = nextCol; i < colEnd; i++) {
                final int top = mItemTops[i];
                if (top < lowest) {
                    lowest = top;
                }
            }
            startFrom = lowest;
        } else {
            startFrom = mItemTops[nextCol];
        }

        int childBottom = startFrom;
        int childTop = childBottom - childHeight;
        final int childLeft = paddingLeft + itemMargin + nextCol * (colWidth + itemMargin);
        final int childRight = childLeft + child.getMeasuredWidth();

        child.layout(childLeft, childTop, childRight, childBottom);

        final int colEnd = Math.min(mColCount, nextCol + lp.span);
        for (int i = nextCol; i < colEnd; i++) {
            mItemTops[i] = childTop - itemMargin;
        }

        nextCol = getNextColumnUp();
        mFirstPosition = position--;
    }

    int highestView = getHeight();

    for (int i = 0; i < getChildCount(); i++) {
        final View child = getChildAt(i);
        if (child == null) {
            break;
        }
        final int top = child.getTop();

        if (top < highestView) {
            highestView = top;
        }
    }

    return gridTop - highestView;
}

---

From source file:au.com.glassechidna.velocityviewpager.VelocityViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this) {
        currentFocused = null;// ww  w  . ja  v a 2  s.  co m
    } else if (currentFocused != null) {
        boolean isChild = false;
        for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                .getParent()) {
            if (parent == this) {
                isChild = true;
                break;
            }
        }
        if (!isChild) {
            // This would cause the focus search down below to fail in fun ways.
            final StringBuilder sb = new StringBuilder();
            sb.append(currentFocused.getClass().getSimpleName());
            for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                    .getParent()) {
                sb.append(" => ").append(parent.getClass().getSimpleName());
            }
            Log.e(TAG, "arrowScroll tried to find focus based on non-child " + "current focused view "
                    + sb.toString());
            currentFocused = null;
        }
    }

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft >= currLeft) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft <= currLeft) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:com.origamilabs.library.views.StaggeredGridView.java

/** Should be called with mPopulating set to true
 * //w w w .  j  ava2s.  c o  m
 * @param fromPosition
 *            Position to start filling from
 * @param overhang
 *            the number of extra pixels to fill beyond the current bottom
 *            edge
 * @return the max overhang beyond the end of the view of any added items at
 *         the bottom */
final int fillDown(int fromPosition, int overhang) {

    final int paddingLeft = getPaddingLeft();
    final int paddingRight = getPaddingRight();
    // final int itemMargin = mItemMargin;

    final int colWidth = (getWidth() - paddingLeft - paddingRight) / mColCount;
    final int gridBottom = getHeight() - getPaddingBottom();
    final int fillTo = gridBottom + overhang;
    int nextCol = getNextColumnDown(fromPosition);
    int position = fromPosition;

    while (nextCol >= 0 && mItemBottoms[nextCol] < fillTo && position < mItemCount) {

        final View child = obtainView(position, null);

        if (child == null)
            continue;

        LayoutParams lp = (LayoutParams) child.getLayoutParams();
        if (lp == null) {
            lp = this.generateDefaultLayoutParams();
            child.setLayoutParams(lp);
        }
        if (child.getParent() != this) {
            if (mInLayout) {
                addViewInLayout(child, -1, lp);
            } else {
                addView(child);
            }
        }

        final int span = Math.min(mColCount, lp.span);
        final int widthSize = colWidth * span;
        final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);

        LayoutRecord rec;
        if (span > 1) {
            rec = getNextRecordDown(position, span);
            // nextCol = rec.column;
        } else {
            rec = mLayoutRecords.get(position);
        }

        boolean invalidateAfter = false;
        if (rec == null) {
            rec = new LayoutRecord();
            mLayoutRecords.put(position, rec);
            rec.column = nextCol;
            rec.span = span;
        } else if (span != rec.span) {
            rec.span = span;
            rec.column = nextCol;
            invalidateAfter = true;
        } else {
            // nextCol = rec.column;
        }

        if (mHasStableIds) {
            final long id = mAdapter.getItemId(position);
            rec.id = id;
            lp.id = id;
        }

        lp.column = nextCol;

        final int heightSpec;
        if (lp.height == LayoutParams.WRAP_CONTENT) {
            heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
        } else {
            heightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
        }
        child.measure(widthSpec, heightSpec);

        final int childHeight = child.getMeasuredHeight();
        if (invalidateAfter || (childHeight != rec.height && rec.height > 0)) {
            invalidateLayoutRecordsAfterPosition(position);
        }
        rec.height = childHeight;

        final int startFrom;
        if (span > 1) {
            int lowest = mItemBottoms[nextCol];
            for (int i = nextCol + 1; i < nextCol + span; i++) {
                final int bottom = mItemBottoms[i];
                if (bottom > lowest) {
                    lowest = bottom;
                }
            }
            startFrom = lowest;
        } else {
            startFrom = mItemBottoms[nextCol];
        }

        final int childTop = startFrom;
        final int childBottom = childTop + childHeight;
        final int childLeft = paddingLeft + nextCol * (colWidth);
        final int childRight = childLeft + child.getMeasuredWidth();
        child.layout(childLeft, childTop, childRight, childBottom);

        // add the position to the mapping
        if (!mColMappings.get(nextCol).contains(position)) {

            // check to see if the mapping exists in other columns
            // this would happen if list has been updated
            for (ArrayList<Integer> list : mColMappings) {
                if (list.contains(position)) {
                    list.remove((Integer) position);
                }
            }

            mColMappings.get(nextCol).add(position);

        }

        for (int i = nextCol; i < nextCol + span; i++) {
            mItemBottoms[i] = childBottom + rec.getMarginBelow(i - nextCol);
        }

        position++;
        nextCol = getNextColumnDown(position);
    }

    int lowestView = 0;
    for (int i = 0; i < mColCount; i++) {
        if (mItemBottoms[i] > lowestView) {
            lowestView = mItemBottoms[i];
        }
    }
    return lowestView - gridBottom;
}

---

From source file:com.android.backups.StaggeredGridViewByJaumo.java

/**
 * Should be called with mPopulating set to true
 * //from  ww  w  . j  av  a  2 s . co m
 * @param position
 * @param fillTo
 * @return the max overhang beyond the end of the view of any added items at
 *         the bottom
 */
final int fillDownTo(int position, int fillTo) {
    final int gridBottom = getHeight() - getPaddingBottom();
    final int paddingLeft = getPaddingLeft();
    int nextCol = getNextColumnDown(position);

    while (nextCol >= 0 && mItemBottoms[nextCol] < fillTo && position < mItemCount) {
        final View child = obtainView(position, null);

        if (child == null)
            continue;

        LayoutParams lp = (LayoutParams) child.getLayoutParams();
        final int colWidth = getColWidth(lp.position);

        if (child.getParent() != this) {
            if (mInLayout) {
                addViewInLayout(child, -1, lp);
            } else {
                addView(child);
            }
        }

        final int span = Math.min(mColCount, lp.span);
        final int widthSize = colWidth * span + getItemMargin(position) * (span - 1);
        final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);

        LayoutRecord rec;
        if (span > 1) {
            rec = getNextRecordDown(position, span);
            nextCol = 0;
        } else {
            rec = mLayoutRecords.get(position);
        }

        boolean invalidateAfter = false;
        if (rec == null) {
            rec = new LayoutRecord();
            mLayoutRecords.put(position, rec);
            rec.column = nextCol;
            rec.span = span;
        } else if (span != rec.span) {
            rec.span = span;
            rec.column = nextCol;
            invalidateAfter = true;
        }

        if (mHasStableIds) {
            final long id = mAdapter.getItemId(position);
            rec.id = id;
            lp.id = id;
        }

        lp.column = nextCol;

        final int heightSpec;
        if (lp.height == LayoutParams.WRAP_CONTENT) {
            heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
        } else {
            heightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
        }
        child.measure(widthSpec, heightSpec);

        final int childHeight = child.getMeasuredHeight();
        if (invalidateAfter || (childHeight != rec.height && rec.height > 0)) {
            invalidateLayoutRecordsAfterPosition(position);
        }
        rec.height = childHeight;

        final int startFrom;
        if (span > 1) {
            int lowest = mItemBottoms[nextCol];

            // Only for span = maxCol
            for (int i = 0; i < mColCount; i++) {
                final int bottom = mItemBottoms[i];
                if (bottom > lowest) {
                    lowest = bottom;
                }
            }
            startFrom = lowest;
        } else {
            startFrom = mItemBottoms[nextCol];
        }

        int itemMargin = getItemMargin(lp.position);
        final int childTop = startFrom + itemMargin;
        final int childBottom = childTop + childHeight;
        final int childLeft;
        if (span > 1) {
            childLeft = paddingLeft + itemMargin;
        } else {
            childLeft = paddingLeft + itemMargin + nextCol * (colWidth + itemMargin);
        }
        final int childRight = childLeft + child.getMeasuredWidth();
        child.layout(childLeft, childTop, childRight, childBottom);

        rec.left = childLeft;
        rec.top = childTop;
        rec.right = childRight;
        rec.bottom = childBottom;
        rec.hasRecRecord = true;

        // add the position to the mapping
        if (!mColMappings.get(nextCol).contains(position)) {

            // check to see if the mapping exists in other columns
            // this would happen if list has been updated
            for (ArrayList<Integer> list : mColMappings) {
                if (list.contains(position)) {
                    list.remove((Integer) position);
                }
            }
            mColMappings.get(nextCol).add(position);
        }

        final int colEnd = Math.min(mColCount, nextCol + lp.span);
        for (int i = nextCol; i < colEnd; i++) {
            mItemBottoms[i] = childBottom + rec.getMarginBelow(i - nextCol);
        }

        position++;
        nextCol = getNextColumnDown(position);
    }

    int lowestView = 0;
    for (int i = 0; i < mColCount; i++) {
        if (mItemBottoms[i] > lowestView) {
            lowestView = mItemBottoms[i];
        }
    }

    return lowestView - gridBottom;
}

---

From source file:com.av.remusic.widget.RoundViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this) {
        currentFocused = null;//  ww  w .j  a  v a  2s  .  c om
    } else if (currentFocused != null) {
        boolean isChild = false;
        for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                .getParent()) {
            if (parent == this) {
                isChild = true;
                break;
            }
        }
        if (!isChild) {
            // This would cause the focus search down below to fail in fun ways.
            final StringBuilder sb = new StringBuilder();
            sb.append(currentFocused.getClass().getSimpleName());
            for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                    .getParent()) {
                sb.append(" => ").append(parent.getClass().getSimpleName());
            }
            Log.e(TAG, "arrowScroll tried to find focus based on non-child " + "currentPosition focused view "
                    + sb.toString());
            currentFocused = null;
        }
    }

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft >= currLeft) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft <= currLeft) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:com.origamilabs.library.views.StaggeredGridView.java

/** Should be called with mPopulating set to true
 * //from   w  w  w  . j  ava  2s .c  o m
 * @param fromPosition
 *            Position to start filling from
 * @param overhang
 *            the number of extra pixels to fill beyond the current top edge
 * @return the max overhang beyond the beginning of the view of any added
 *         items at the top */
final int fillUp(int fromPosition, int overhang) {

    final int paddingLeft = getPaddingLeft();
    final int paddingRight = getPaddingRight();
    // final int itemMargin = mItemMargin;

    final int colWidth = (getWidth() - paddingLeft - paddingRight) / mColCount;
    mColWidth = colWidth;
    final int gridTop = getPaddingTop();
    final int fillTo = gridTop - overhang;
    int nextCol = getNextColumnUp();
    int position = fromPosition;

    while (nextCol >= 0 && mItemTops[nextCol] > fillTo && position >= 0) {
        // make sure the nextCol is correct. check to see if has been mapped
        // otherwise stick to getNextColumnUp()
        if (!mColMappings.get(nextCol).contains((Integer) position)) {
            for (int i = 0; i < mColMappings.size(); i++) {
                if (mColMappings.get(i).contains((Integer) position)) {
                    nextCol = i;
                    break;
                }
            }
        }

        // displayMapping();

        final View child = obtainView(position, null);

        if (child == null)
            continue;

        LayoutParams lp = (LayoutParams) child.getLayoutParams();

        if (lp == null) {
            lp = this.generateDefaultLayoutParams();
            child.setLayoutParams(lp);
        }

        if (child.getParent() != this) {
            if (mInLayout) {
                addViewInLayout(child, 0, lp);
            } else {
                addView(child, 0);
            }
        }

        final int span = Math.min(mColCount, lp.span);
        final int widthSize = colWidth * span;
        final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);

        LayoutRecord rec;
        if (span > 1) {
            rec = getNextRecordUp(position, span);
            // nextCol = rec.column;
        } else {
            rec = mLayoutRecords.get(position);
        }

        boolean invalidateBefore = false;
        if (rec == null) {
            rec = new LayoutRecord();
            mLayoutRecords.put(position, rec);
            rec.column = nextCol;
            rec.span = span;
        } else if (span != rec.span) {
            rec.span = span;
            rec.column = nextCol;
            invalidateBefore = true;
        } else {
            // nextCol = rec.column;
        }

        if (mHasStableIds) {
            final long id = mAdapter.getItemId(position);
            rec.id = id;
            lp.id = id;
        }

        lp.column = nextCol;

        final int heightSpec;
        if (lp.height == LayoutParams.WRAP_CONTENT) {
            heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
        } else {
            heightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
        }
        child.measure(widthSpec, heightSpec);

        final int childHeight = child.getMeasuredHeight();
        if (invalidateBefore || (childHeight != rec.height && rec.height > 0)) {
            invalidateLayoutRecordsBeforePosition(position);
        }
        rec.height = childHeight;

        // int itemTop = mItemTops[nextCol];

        final int startFrom;
        if (span > 1) {
            int highest = mItemTops[nextCol];
            for (int i = nextCol + 1; i < nextCol + span; i++) {
                final int top = mItemTops[i];
                if (top < highest) {
                    highest = top;
                }
            }
            startFrom = highest;
        } else {
            startFrom = mItemTops[nextCol];
        }

        int childBottom = startFrom;
        int childTop = childBottom - childHeight;
        final int childLeft = paddingLeft + nextCol * (colWidth);
        final int childRight = childLeft + child.getMeasuredWidth();

        // if(position == 0){
        // if(this.getChildCount()>1 && this.mColCount>1){
        // childTop = this.getChildAt(1).getTop();
        // childBottom = childTop + childHeight;
        // }
        // }

        child.layout(childLeft, childTop, childRight, childBottom);

        for (int i = nextCol; i < nextCol + span; i++) {
            mItemTops[i] = childTop - rec.getMarginAbove(i - nextCol);
        }

        nextCol = getNextColumnUp();
        mFirstPosition = position--;
    }

    int highestView = getHeight();

    for (int i = 0; i < mColCount; i++) {
        final View child = getFirstChildAtColumn(i);
        if (child == null) {
            highestView = 0;
            break;
        }
        final int top = child.getTop();

        if (top < highestView) {
            highestView = top;
        }
    }

    return gridTop - highestView;
}

---

From source file:com.telerik.examples.primitives.ExampleViewPagerBase.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this) {
        currentFocused = null;//from w ww .j a  v a 2 s  . c  o  m
    } else if (currentFocused != null) {
        boolean isChild = false;
        for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                .getParent()) {
            if (parent == this) {
                isChild = true;
                break;
            }
        }
        if (!isChild) {
            // This would cause the focus search down below to fail in fun ways.
            final StringBuilder sb = new StringBuilder();
            sb.append(currentFocused.getClass().getSimpleName());
            for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                    .getParent()) {
                sb.append(" => ").append(parent.getClass().getSimpleName());
            }
            Log.e(TAG, "arrowScroll tried to find focus based on non-child " + "current focused view "
                    + sb.toString());
            currentFocused = null;
        }
    }

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft >= currLeft) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextStart = this.orientation == LinearLayout.HORIZONTAL
                    ? getChildRectInPagerCoordinates(mTempRect, nextFocused).left
                    : getChildRectInPagerCoordinates(mTempRect, nextFocused).top;
            final int currentStart = this.orientation == LinearLayout.HORIZONTAL
                    ? getChildRectInPagerCoordinates(mTempRect, currentFocused).left
                    : getChildRectInPagerCoordinates(mTempRect, currentFocused).top;
            if (currentFocused != null && nextStart <= currentStart) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:com.example.sky.test.view.ViewPager.java

/**
 * Handle scrolling in response to a left or right arrow click.
 *
 * @param direction The direction corresponding to the arrow key that was pressed. It should be
 *                  either {@link View#FOCUS_LEFT} or {@link View#FOCUS_RIGHT}.
 * @return Whether the scrolling was handled successfully.
 *//*from ww  w . jav  a2  s .  c  om*/
public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this) {
        currentFocused = null;
    } else if (currentFocused != null) {
        boolean isChild = false;
        for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                .getParent()) {
            if (parent == this) {
                isChild = true;
                break;
            }
        }
        if (!isChild) {
            // This would cause the focus search down below to fail in fun ways.
            final StringBuilder sb = new StringBuilder();
            sb.append(currentFocused.getClass().getSimpleName());
            for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent
                    .getParent()) {
                sb.append(" => ").append(parent.getClass().getSimpleName());
            }
            Log.e(TAG, "arrowScroll tried to find focus based on non-child " + "current focused view "
                    + sb.toString());
            currentFocused = null;
        }
    }

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft >= currLeft) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft <= currLeft) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:ca.psiphon.ploggy.FragmentSelfStatusDetails.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.self_status_details, container, false);

    mFragmentComposeMessage = new FragmentComposeMessage();
    FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
    transaction.add(R.id.fragment_self_status_details_compose_message, mFragmentComposeMessage).commit();

    mScrollView = (ScrollView) view.findViewById(R.id.self_status_details_scroll_view);
    mAvatarImage = (ImageView) view.findViewById(R.id.self_status_details_avatar_image);
    mNicknameText = (TextView) view.findViewById(R.id.self_status_details_nickname_text);
    mFingerprintText = (TextView) view.findViewById(R.id.self_status_details_fingerprint_text);
    mMessagesList = (ListView) view.findViewById(R.id.self_status_details_messages_list);
    mLocationLabel = (TextView) view.findViewById(R.id.self_status_details_location_label);
    mLocationStreetAddressLabel = (TextView) view
            .findViewById(R.id.self_status_details_location_street_address_label);
    mLocationStreetAddressText = (TextView) view
            .findViewById(R.id.self_status_details_location_street_address_text);
    mLocationCoordinatesLabel = (TextView) view
            .findViewById(R.id.self_status_details_location_coordinates_label);
    mLocationCoordinatesText = (TextView) view.findViewById(R.id.self_status_details_location_coordinates_text);
    mLocationPrecisionLabel = (TextView) view.findViewById(R.id.self_status_details_location_precision_label);
    mLocationPrecisionText = (TextView) view.findViewById(R.id.self_status_details_location_precision_text);
    mLocationTimestampLabel = (TextView) view.findViewById(R.id.self_status_details_location_timestamp_label);
    mLocationTimestampText = (TextView) view.findViewById(R.id.self_status_details_location_timestamp_text);

    // TODO: use header/footer of listview instead of hack embedding of listview in scrollview
    // from: http://stackoverflow.com/questions/4490821/scrollview-inside-scrollview/11554823#11554823
    mScrollView.setOnTouchListener(new View.OnTouchListener() {
        @Override// w ww. j  a  v a2  s . com
        public boolean onTouch(View view, MotionEvent event) {
            mMessagesList.requestDisallowInterceptTouchEvent(false);
            return false;
        }
    });
    mMessagesList.setOnTouchListener(new View.OnTouchListener() {
        private float downX, downY;

        @Override
        public boolean onTouch(View view, MotionEvent event) {
            // We want to capture vertical scrolling motions for use by
            // the messages list, but we don't want to capture horizontal
            // swiping that should be used to switch tabs. So we're going
            // to decide based on whether the move looks more X-ish or Y-ish.
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                downX = event.getX();
                downY = event.getY();

                // Make sure the parent is allowed to intercept.
                view.getParent().requestDisallowInterceptTouchEvent(false);
            } else if (event.getAction() == MotionEvent.ACTION_MOVE) {
                float deltaX = downX - event.getX();
                float deltaY = downY - event.getY();
                if (Math.abs(deltaY) > Math.abs(deltaX)) {
                    // Looks like a Y-ish scroll attempt. Disallow parent from intercepting.
                    view.getParent().requestDisallowInterceptTouchEvent(true);
                }
            }

            return false;
        }
    });

    try {
        mMessageAdapter = new MessageAdapter(getActivity(), MessageAdapter.Mode.SELF_MESSAGES);
        mMessagesList.setAdapter(mMessageAdapter);
    } catch (Utils.ApplicationError e) {
        Log.addEntry(LOG_TAG, "failed to load self messages");
    }

    show(view);

    // Refresh the message list every 5 seconds. This updates "time ago" displays.
    // TODO: event driven redrawing?
    mRefreshUIExecutor = new Utils.FixedDelayExecutor(new Runnable() {
        @Override
        public void run() {
            show();
        }
    }, 5000);

    Events.register(this);

    return view;
}

---

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