android.view.accessibility.AccessibilityNodeInfo#setCollectionInfo ( )源码实例Demo

/** @hide */
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfoInternal(info);

    final int columnsCount = getNumColumns();
    final int rowsCount = getCount() / columnsCount;
    final int selectionMode = getSelectionModeForAccessibility();
    final CollectionInfo collectionInfo = CollectionInfo.obtain(
            rowsCount, columnsCount, false, selectionMode);
    info.setCollectionInfo(collectionInfo);

    if (columnsCount > 0 || rowsCount > 0) {
        info.addAction(AccessibilityAction.ACTION_SCROLL_TO_POSITION);
    }
}
 

/** @hide */
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfoInternal(info);

    final int rowsCount = getCount();
    final int selectionMode = getSelectionModeForAccessibility();
    final CollectionInfo collectionInfo = CollectionInfo.obtain(
            rowsCount, 1, false, selectionMode);
    info.setCollectionInfo(collectionInfo);

    if (rowsCount > 0) {
        info.addAction(AccessibilityAction.ACTION_SCROLL_TO_POSITION);
    }
}
 

@Override
protected void setAccessibilityNodeInfoCollectionInfo(AccessibilityNodeInfo node,
        int rowCount, int columnCount, boolean hierarchical) {
    node.setCollectionInfo(AccessibilityNodeInfo.CollectionInfo.obtain(
            rowCount, columnCount, hierarchical));
}