Why Button click event works in all version but not works in Android latest pie? : Recently Just know that all app works fine in android but testing in Emulator with android Pie stuck and first page not able to click and showing on email field "Unverified Post" i don't know what it means so can anybody know what updated in PIE?

Checked code but not getting where's problem ! and what is Unverified Post that shows on email Textview ?

```java
[enter image description here][1]

            findViewById(R.id.submit_btn).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    findViewById(R.id.submit_btn).setEnabled(false);
                    register();
                }
            });
```


  [1]: https://i.stack.imgur.com/H4uIh.png