Example usage for android.widget SectionIndexer getPositionForSection

Introduction

In this page you can find the example usage for android.widget SectionIndexer getPositionForSection.

Prototype

int getPositionForSection(int sectionIndex);

Source Link

Document

Given the index of a section within the array of section objects, returns the starting position of that section within the adapter.

Usage

From source file:com.dm.xz.views.PinnedSectionListView.java

int findCurrentSectionPosition(int fromPosition) {
    ListAdapter adapter = getAdapter();/*from w  ww  . j  a  v  a 2 s .c  o m*/

    if (fromPosition >= adapter.getCount())
        return -1; // dataset has changed, no candidate

    if (adapter instanceof SectionIndexer) {
        // try fast way by asking section indexer
        SectionIndexer indexer = (SectionIndexer) adapter;
        int sectionPosition = indexer.getSectionForPosition(fromPosition);
        int itemPosition = indexer.getPositionForSection(sectionPosition);
        int typeView = adapter.getItemViewType(itemPosition);
        if (isItemViewTypePinned(adapter, typeView)) {
            return itemPosition;
        } // else, no luck
    }

    // try slow way by looking through to the next section item above
    for (int position = fromPosition; position >= 0; position--) {
        int viewType = adapter.getItemViewType(position);
        if (isItemViewTypePinned(adapter, viewType))
            return position;
    }
    return -1; // no candidate found
}

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From source file:com.yahala.ui.Views.PinnedSectionListView.java

int findCurrentSectionPosition(int fromPosition) {
    ListAdapter adapter = getAdapter();/*  w  ww. j  a  va2s. com*/

    if (adapter instanceof SectionIndexer) {
        // try fast way by asking section indexer
        SectionIndexer indexer = (SectionIndexer) adapter;
        int sectionPosition = indexer.getSectionForPosition(fromPosition);
        int itemPosition = indexer.getPositionForSection(sectionPosition);
        int typeView = adapter.getItemViewType(itemPosition);
        if (isItemViewTypePinned(adapter, typeView)) {
            return itemPosition;
        } // else, no luck
    }

    // try slow way by looking through to the next section item above
    for (int position = fromPosition; position >= 0; position--) {
        int viewType = adapter.getItemViewType(position);
        if (isItemViewTypePinned(adapter, viewType))
            return position;
    }
    return -1; // no candidate found
}

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