Example usage for android.widget ExpandableListView getPackedPositionForChild

Introduction

In this page you can find the example usage for android.widget ExpandableListView getPackedPositionForChild.

Prototype

public static long getPackedPositionForChild(int groupPosition, int childPosition) 

Source Link

Document

Returns the packed position representation of a child's position.

Usage

From source file:com.granita.tasks.TaskListFragment.java

public void setActivatedItem(int groupPosition, int childPosition) {
    if (groupPosition != ExpandableListView.INVALID_POSITION && groupPosition < mAdapter.getGroupCount()
            && childPosition != ExpandableListView.INVALID_POSITION
            && childPosition < mAdapter.getChildrenCount(groupPosition)) {
        try {//  www. j  av  a2  s  . c o  m
            mExpandableListView.setItemChecked(mExpandableListView.getFlatListPosition(
                    ExpandableListView.getPackedPositionForChild(groupPosition, childPosition)), true);
        } catch (NullPointerException e) {
            // for now we just catch the NPE until we've found the reason
            // just catching it won't hurt, it's just that the list selection won't be updated properly

            // FIXME: find the actual cause and fix it
        }
    }
}

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From source file:org.totschnig.myexpenses.fragment.CategoryList.java

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor c) {
    if (getActivity() == null)
        return;/*from   w w  w.jav a2s .c om*/
    int id = loader.getId();
    ProtectedFragmentActivity ctx = (ProtectedFragmentActivity) getActivity();
    ActionBar actionBar = ctx.getSupportActionBar();
    switch (id) {
    case SUM_CURSOR:
        boolean[] seen = new boolean[2];
        c.moveToFirst();
        while (c.isAfterLast() == false) {
            int type = c.getInt(c.getColumnIndex(KEY_TYPE));
            updateSum(type > 0 ? "+ " : "- ", type > 0 ? incomeSumTv : expenseSumTv,
                    c.getLong(c.getColumnIndex(KEY_SUM)));
            c.moveToNext();
            seen[type] = true;
        }
        //if we have no income or expense, there is no row in the cursor
        if (!seen[1])
            updateSum("+ ", incomeSumTv, 0);
        if (!seen[0])
            updateSum("- ", expenseSumTv, 0);
        break;
    case DATEINFO_CURSOR:
        c.moveToFirst();
        actionBar.setSubtitle(mGrouping.getDisplayTitle(ctx, mGroupingYear, mGroupingSecond, c));
        thisYear = c.getInt(c.getColumnIndex(KEY_THIS_YEAR));
        thisMonth = c.getInt(c.getColumnIndex(KEY_THIS_MONTH));
        thisWeek = c.getInt(c.getColumnIndex(KEY_THIS_WEEK));
        thisDay = c.getInt(c.getColumnIndex(KEY_THIS_DAY));
        maxValue = c.getInt(c.getColumnIndex(KEY_MAX_VALUE));
        break;
    case SORTABLE_CURSOR:
        mGroupCursor = c;
        mAdapter.setGroupCursor(c);
        if (ctx.helpVariant.equals(ManageCategories.HelpVariant.distribution)) {
            if (c.getCount() > 0) {
                if (lastExpandedPosition == -1) {
                    mChart.setVisibility(showChart ? View.VISIBLE : View.GONE);
                    setData(c, mMainColors);
                    highlight(0);
                    if (showChart)
                        mListView.setItemChecked(
                                mListView.getFlatListPosition(ExpandableListView.getPackedPositionForGroup(0)),
                                true);
                }
            } else {
                mChart.setVisibility(View.GONE);
            }
        }
        if (mAccount != null) {
            actionBar.setTitle(mAccount.label);
        }
        invalidateCAB(); //only need to do this for group since children's cab does not depnd on cursor
        break;
    default:
        //check if group still exists
        if (mAdapter.getGroupId(id) != 0) {
            mAdapter.setChildrenCursor(id, c);
            if (ctx.helpVariant.equals(ManageCategories.HelpVariant.distribution)) {
                long packedPosition;
                if (c.getCount() > 0) {
                    mSubColors = getSubColors(mMainColors.get(id % mMainColors.size()));
                    setData(c, mSubColors);
                    highlight(0);
                    packedPosition = ExpandableListView.getPackedPositionForChild(id, 0);
                } else {
                    packedPosition = ExpandableListView.getPackedPositionForGroup(id);
                    if (!chartDisplaysSubs) {//check if a loader running concurrently has already switched to subs
                        highlight(id);
                    }
                }
                if (showChart && id == lastExpandedPosition) {
                    //if user has expanded a new group before loading is finished, getFlatListPosition
                    //would run in an NPE
                    mListView.setItemChecked(mListView.getFlatListPosition(packedPosition), true);
                }
            }
        }
    }
}

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