Example usage for android.support.v4.view.accessibility AccessibilityRecordCompat getItemCount

Introduction

In this page you can find the example usage for android.support.v4.view.accessibility AccessibilityRecordCompat getItemCount.

Prototype

public int getItemCount() 

Source Link

Document

Gets the number of items that can be visited.

Usage

From source file:com.android.screenspeak.eventprocessor.ProcessorFocusAndSingleTap.java

/**
 * @param record the AccessbilityRecord for the event
 * @param isViewFocusedEvent true if the event is TYPE_VIEW_FOCUSED, otherwise it is
 * TYPE_VIEW_SELECTED./*  w  w  w . j a  v a 2  s  .c o m*/
 */
private boolean setFocusOnView(AccessibilityRecordCompat record, boolean isViewFocusedEvent) {
    AccessibilityNodeInfoCompat source = null;
    AccessibilityNodeInfoCompat existing = null;
    AccessibilityNodeInfoCompat child = null;

    try {
        source = record.getSource();
        if (source == null) {
            return false;
        }

        if (record.getItemCount() > 0) {
            final int index = (record.getCurrentItemIndex() - record.getFromIndex());
            if (index >= 0 && index < source.getChildCount()) {
                child = source.getChild(index);
                if (child != null) {
                    if (AccessibilityNodeInfoUtils.isTopLevelScrollItem(child) && tryFocusing(child)) {
                        return true;
                    }
                }
            }
        }

        if (!isViewFocusedEvent) {
            return false;
        }

        // Logic below is only specific to TYPE_VIEW_FOCUSED event
        // Try focusing the source node.
        if (tryFocusing(source)) {
            return true;
        }

        // If we fail and the source node already contains focus, abort.
        existing = source.findFocus(AccessibilityNodeInfo.FOCUS_ACCESSIBILITY);
        if (existing != null) {
            return false;
        }

        // If we fail to focus a node, perhaps because it is a focusable
        // but non-speaking container, we should still attempt to place
        // focus on a speaking child within the container.
        child = AccessibilityNodeInfoUtils.searchFromBfs(source,
                AccessibilityNodeInfoUtils.FILTER_SHOULD_FOCUS);
        return child != null && tryFocusing(child);

    } finally {
        AccessibilityNodeInfoUtils.recycleNodes(source, existing, child);
    }
}

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