How does Lastpass manage this?!
AccessibilityNodeInfo has a setText() method, but I feel like this is a red herring as the docs state,
Note: Cannot be called from an AccessibilityService. This class is made immutable before being delivered to an AccessibilityService.
Another user asked a similar question a while back, but the recent updates to LastPass prove that it is indeed possible.
I found some better solution rather than ACTION_PASTE. I feel ACTION_PASTE makes delay and didn't work properly. ACTION_SET_TEXT works fine for me, check with you.
public void pasteText(AccessibilityNodeInfo node, String text) {
Bundle arguments = new Bundle();
arguments.putString(AccessibilityNodeInfoCompat.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE, text);
node.performAction(AccessibilityNodeInfoCompat.ACTION_SET_TEXT, arguments);
}