const ModalNavigator = createStackNavigator(
{
Main: { screen: Main },
Login: { screen: Login },
},
{
headerMode: 'none',
mode: 'modal',
defaultNavigationOptions: {
gesturesEnabled: false,
},
transitionConfig: () => ({
transitionSpec: {
duration: 300,
easing: Easing.out(Easing.poly(4)),
timing: Animated.timing,
},
screenInterpolator: sceneProps => {
const { layout, position, scene } = sceneProps;
const { index } = scene;
const height = layout.initHeight;
const translateY = position.interpolate({
inputRange: [index - 1, index, index + 1],
outputRange: [height, 0, 0],
});
const opacity = position.interpolate({
inputRange: [index - 1, index - 0.99, index],
outputRange: [0, 1, 1],
});
return { opacity, transform: [{ translateY }] };
},
}),
}
);
