onEnter can trigger but onExit can not

[chinavane]

class Contact extends Component {
static onEnter = () => {
console.log('--------------->onEnter')
};
static onExit = () =>{
console.log('---------------->onExit')
}

I can console onEnter,but onExit can't trigger.

[Blapi]

Giving the solution is a good practice before closing an issue :)