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.huewu.pla.lib.internal.PLAListView.java

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

    if (DEBUG) {/*w w w . ja  v  a  2  s  .  c  o m*/
        Log.v("PLA_ListView", "onFocusChanged");
    }

    int closetChildIndex = -1;
    if (gainFocus && previouslyFocusedRect != null) {
        // previouslyFocusedRect.offset(mScrollX, mScrollY);
        previouslyFocusedRect.offset(getScrollX(), getScrollY());

        final ListAdapter adapter = mAdapter;
        // Don't cache the result of getChildCount or mFirstPosition here,
        // it could change in layoutChildren.
        if (adapter.getCount() < getChildCount() + mFirstPosition) {
            mLayoutMode = LAYOUT_NORMAL;
            layoutChildren();
        }

        // figure out which item should be selected based on previously
        // focused rect
        final 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;
            }

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

            if (distance < minDistance) {
                minDistance = distance;
                closetChildIndex = i;
            }
        }
    }

    if (closetChildIndex >= 0) {
        setSelection(closetChildIndex + mFirstPosition);
    } else {
        requestLayout();
    }
}

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From source file:com.huewu.pla.lib.internal.PLA_ListView.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++;//from   w  w w .j  a v a 2s  .  c  o  m
                    } else if (i <= currentItemIndex) {
                        currentItemIndex--;
                    }
                }
            } else {
                itemCount = count;
            }
        }

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

    return populated;
}

---

From source file:caesar.feng.framework.widget.StaggeredGrid.ExtendableListView.java

/**
 * Remember enough information to restore the screen state when the data has
 * changed./*from   www  .  j  a v  a  2  s .  c om*/
 */
void rememberSyncState() {
    if (getChildCount() > 0) {
        mNeedSync = true;
        mSyncHeight = getHeight();
        // Sync the based on the offset of the first view
        View v = getChildAt(0);
        ListAdapter adapter = getAdapter();
        if (mFirstPosition >= 0 && mFirstPosition < adapter.getCount()) {
            mSyncRowId = adapter.getItemId(mFirstPosition);
        } else {
            mSyncRowId = NO_ID;
        }
        if (v != null) {
            mSpecificTop = v.getTop();
        }
        mSyncPosition = mFirstPosition;
    }
}

---

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

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

    if (DEBUG)//  w w  w .j  ava2s  .  co  m
        Log.v("PLA_ListView", "onFocusChanged");

    int closetChildIndex = -1;
    if (gainFocus && previouslyFocusedRect != null) {
        // previouslyFocusedRect.offset(mScrollX, mScrollY);
        previouslyFocusedRect.offset(getScrollX(), getScrollY());

        final ListAdapter adapter = mAdapter;
        // Don't cache the result of getChildCount or mFirstPosition here,
        // it could change in layoutChildren.
        if (adapter.getCount() < getChildCount() + mFirstPosition) {
            mLayoutMode = LAYOUT_NORMAL;
            layoutChildren();
        }

        // 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;
            }
        }
    }

    if (closetChildIndex >= 0) {
        setSelection(closetChildIndex + mFirstPosition);
    } else {
        requestLayout();
    }
}

---

From source file:cn.iterlog.myapplication.widget.overscroll.StaggeredGridView.java

public void setAdapter(ListAdapter adapter) {
    if (mAdapter != null) {
        mAdapter.unregisterDataSetObserver(mObserver);
    }//from ww  w .  ja v  a2  s .com
    // TODO: If the new adapter says that there are stable IDs, remove certain layout records
    // and onscreen views if they have changed instead of removing all of the state here.
    clearAllState();
    mAdapter = adapter;
    mDataChanged = true;

    mItemCount = adapter != null ? adapter.getCount() : 0;

    if (adapter != null) {
        adapter.registerDataSetObserver(mObserver);
        mRecycler.setViewTypeCount(adapter.getViewTypeCount());
        mHasStableIds = adapter.hasStableIds();
    } else {
        mHasStableIds = false;
    }
    populate(adapter != null);
}

---

From source file:com.ad.view.staggeredgridview.StaggeredGridView.java

public void setAdapter(ListAdapter adapter) {
    if (mAdapter != null) {
        mAdapter.unregisterDataSetObserver(mObserver);
    }//from www . j av  a  2s .  c o m
    // TODO: If the new adapter says that there are stable IDs, remove
    // certain layout records
    // and onscreen views if they have changed instead of removing all of
    // the state here.
    clearAllState();
    mAdapter = adapter;
    mDataChanged = true;

    mItemCount = adapter != null ? adapter.getCount() : 0;

    if (adapter != null) {
        adapter.registerDataSetObserver(mObserver);
        mRecycler.setViewTypeCount(adapter.getViewTypeCount());
        mHasStableIds = adapter.hasStableIds();
    } else {
        mHasStableIds = false;
    }
    populate(adapter != null);
}

---

From source file:com.cbs.corona.lib.ExtendableListView.java

@Override
public void setAdapter(final ListAdapter adapter) {
    if (mAdapter != null) {
        mAdapter.unregisterDataSetObserver(mObserver);
    }/*  w ww. j a  v a  2 s .c  om*/

    // use a wrapper list adapter if we have a header or footer
    if (mHeaderViewInfos.size() > 0 || mFooterViewInfos.size() > 0) {
        mAdapter = new HeaderViewListAdapter(mHeaderViewInfos, mFooterViewInfos, adapter);
    } else {
        mAdapter = adapter;
    }

    mDataChanged = true;
    mItemCount = adapter != null ? adapter.getCount() : 0;

    if (adapter != null) {
        adapter.registerDataSetObserver(mObserver);
        mRecycleBin.setViewTypeCount(adapter.getViewTypeCount());
    }

    requestLayout();
}

---

From source file:com.app.afteryou.ui.staggered.StaggeredGridView.java

public void setAdapter(ListAdapter adapter) {
    if (mAdapter != null) {
        mAdapter.unregisterDataSetObserver(mDataSetObserver);
    }//from   w w  w  .ja va 2  s. co m
    // TODO: If the new adapter says that there are stable IDs, remove
    // certain layout records
    // and onscreen views if they have changed instead of removing all of
    // the state here.
    clearAllState();
    mAdapter = adapter;
    mDataChanged = true;
    mOldItemCount = mItemCount = adapter != null ? adapter.getCount() : 0;
    if (adapter != null) {
        adapter.registerDataSetObserver(mDataSetObserver);
        mRecycler.setViewTypeCount(adapter.getViewTypeCount());
        mHasStableIds = adapter.hasStableIds();
    } else {
        mHasStableIds = false;
    }
    populate(adapter != null);
}

---

From source file:com.nttec.everychan.ui.NewTabFragment.java

private void openLocal() {
    if (!CompatibilityUtils.hasAccessStorage(activity))
        return;/*  www .ja  va2  s.co  m*/
    final ListAdapter savedThreadsAdapter = new ArrayAdapter<Object>(activity, 0) {
        private static final int HEAD_ITEM = 0;
        private static final int NORMAL_ITEM = 1;

        private LayoutInflater inflater = LayoutInflater.from(activity);
        private int drawablePadding = (int) (resources.getDisplayMetrics().density * 5 + 0.5f);

        {
            add(new Object());
            for (Database.SavedThreadEntry entity : MainApplication.getInstance().database.getSavedThreads()) {
                File file = new File(entity.filepath);
                if (file.exists())
                    add(entity);
            }
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View v;
            if (position == 0) {
                v = convertView == null ? inflater.inflate(android.R.layout.simple_list_item_1, parent, false)
                        : convertView;
                TextView tv = (TextView) v.findViewById(android.R.id.text1);
                tv.setText(R.string.newtab_select_local_file);
            } else {
                Database.SavedThreadEntry item = (Database.SavedThreadEntry) getItem(position);
                v = convertView == null ? inflater.inflate(android.R.layout.simple_list_item_2, parent, false)
                        : convertView;
                TextView t1 = (TextView) v.findViewById(android.R.id.text1);
                TextView t2 = (TextView) v.findViewById(android.R.id.text2);
                t1.setSingleLine();
                t2.setSingleLine();
                t1.setEllipsize(TextUtils.TruncateAt.END);
                t2.setEllipsize(TextUtils.TruncateAt.START);
                t1.setText(item.title);
                t2.setText(item.filepath);
                ChanModule chan = MainApplication.getInstance().getChanModule(item.chan);
                if (chan != null) {
                    t1.setCompoundDrawablesWithIntrinsicBounds(chan.getChanFavicon(), null, null, null);
                    t1.setCompoundDrawablePadding(drawablePadding);
                }
            }
            return v;
        }

        @Override
        public int getViewTypeCount() {
            return 2;
        }

        @Override
        public int getItemViewType(int position) {
            return position == 0 ? HEAD_ITEM : NORMAL_ITEM;
        }
    };

    if (savedThreadsAdapter.getCount() == 1) {
        selectFile();
        return;
    }
    DialogInterface.OnClickListener listListener = new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            if (which == 0) {
                selectFile();
            } else {
                Database.SavedThreadEntry item = (Database.SavedThreadEntry) savedThreadsAdapter.getItem(which);
                LocalHandler.open(item.filepath, activity);
            }
        }
    };
    new AlertDialog.Builder(activity).setTitle(R.string.newtab_saved_threads_title)
            .setAdapter(savedThreadsAdapter, listListener).setNegativeButton(android.R.string.cancel, null)
            .show();
}

---

From source file:com.huewu.pla.lib.internal.PLAListView.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./*from   w w  w  . jav a 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(final int widthMeasureSpec, final int startPosition, int endPosition,
        final int maxHeight, final 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 PLAAbsListView.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;
}

---

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