resume栈顶Activity--Android P

ActivityStackSuperior#resumeFocusedStackTopActivityLocked() ->ActivityStack#resumeTopActivityUncheckedLocked()->resumeTopActivityInnerLocked()

final ClientTransaction transaction = ClientTransaction.obtain(next.app.thread,
                            next.appToken);
                    // Deliver all pending results.
                    ArrayList a = next.results;
                    if (a != null) {
                        final int N = a.size();
                        if (!next.finishing && N > 0) {
                            if (DEBUG_RESULTS) Slog.v(TAG_RESULTS,
                                    "Delivering results to " + next + ": " + a);
                            transaction.addCallback(ActivityResultItem.obtain(a));
                        }
                    }

                    if (next.newIntents != null) {
                        t