Example usage for android.view.accessibility AccessibilityNodeInfo ACTION_ARGUMENT_ROW_INT

Introduction

In this page you can find the example usage for android.view.accessibility AccessibilityNodeInfo ACTION_ARGUMENT_ROW_INT.

Prototype

String ACTION_ARGUMENT_ROW_INT

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Document

Argument for specifying the collection row to make visible on screen.

Usage

From source file:simonlang.coastdove.messengerencryption.ChatOverlay.java

@Override
public void inflate() {
    super.inflate();
    mListView = (ListView) findViewById(R.id.list);
    mListView.setAdapter(mListAdapter);//from   w  ww.  ja  v a 2  s .  com
    Button previous = (Button) findViewById(R.id.button_load_previous);
    Button next = (Button) findViewById(R.id.button_load_next);
    if (Build.VERSION.SDK_INT >= 23) {
        previous.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mService.requestAction(mIdListNode,
                        AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);
            }
        });
        next.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Bundle args = new Bundle();
                args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_ROW_INT, 103);
                mService.requestAction(mIdListNode,
                        AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
            }
        });
    }

    mListView.setOnScrollListener(new AbsListView.OnScrollListener() {
        private boolean mScrollingUp = false;
        private int mPrevFirstVisibileItem = 0;

        @Override
        public void onScrollStateChanged(AbsListView view, int scrollState) {
            if (mPrevFirstVisibileItem > view.getFirstVisiblePosition())
                mScrollingUp = true;
            else
                mScrollingUp = false;
            if (scrollState == SCROLL_STATE_IDLE) {
                mPrevFirstVisibileItem = view.getFirstVisiblePosition();

                Bundle args = new Bundle();

                if (view.getFirstVisiblePosition() == 0) {
                    mService.requestAction(mIdListNode,
                            AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);
                } else if (view.getLastVisiblePosition() == view.getCount() - 1) {
                    mService.requestAction(mIdListNode,
                            AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
                } else {
                    int differenceFromLast = mLastListItemMapping.first
                            - (mScrollingUp ? view.getFirstVisiblePosition() : view.getLastVisiblePosition());
                    args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_ROW_INT,
                            mLastListItemMapping.second - differenceFromLast);
                    mService.requestAction(mIdListNode,
                            AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_TO_POSITION, args);
                }
            }
        }

        @Override
        public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        }
    });
}

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