setactualtitle.java

 public void showIntroPaypal(){
        if(!help.getIntroPaypal()) {
            MaterialTapTargetPrompt.Builder mttp = Help.showPrompt(PaymentActivity.this, R.id.btn_Paypal, "Payment", "Tap here to open payment Activity");
            mttp.setPromptStateChangeListener((prompt, state) -> {
                if (state == MaterialTapTargetPrompt.STATE_DISMISSED
                        || state == MaterialTapTargetPrompt.STATE_FOCAL_PRESSED) {
                    help.setIntroPaypal(true);
                    startActivity(new Intent(PaymentActivity.this, HomeActivity.class));

                }

            });