Android unable read window content on few devices using accessibility service

Question

My requirement: Reading the text from pop up, dialog etc for particular app.

I have implemented an accessibility service and I am receiving proper events and data as

Answer 1

you should check whether there are any sub child for child nodes.

private void clickPerform(AccessibilityNodeInfo nodeInfo)
 {
   if(nodeInfo != null)
 {

            for (int i = 0; i < nodeInfo.getChildCount(); i++) {
                AccessibilityNodeInfo childNode = nodeInfo.getChild(i);
                Log.e("test", "clickPerform: "+childNode );
                if (childNode != null) {
                    for (int j = 0; j <= childNode.getChildCount(); j++) {
                        AccessibilityNodeInfo subChild = childNode.getChild(i);

                        if (String.valueOf(subChild.getText()).toLowerCase().equals("ok")) {
                            subChild.performAction(AccessibilityNodeInfo.ACTION_CLICK);
                        } else {
                            Log.e("t2", "clickPerform: ");
                        }
                    }
                }

                }
            }
}