@react-navigation/native#useNavigationState TypeScript Examples

The following examples show how to use @react-navigation/native#useNavigationState. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: MainNavigator.tsx    From mobile with Apache License 2.0 6 votes vote down vote up 
withDarkNav = (Component: React.ElementType) => {
  const ComponentWithDarkNav = (props: any) => {
    const stackIndex = useNavigationState(state => state.index);
    return (
      <SafeAreaProvider>
        <StatusBar
          barStyle={
            // On iOS 13+ keep light statusbar since the screen will be displayed in a modal with a
            // dark background.
            stackIndex > 0 && Platform.OS === 'ios' && parseInt(Platform.Version as string, 10) >= 13 && !Platform.isPad
              ? 'light-content'
              : 'dark-content'
          }
        />
        <Component {...props} />
      </SafeAreaProvider>
    );
  };
  return ComponentWithDarkNav;
}
Example #2
Source File: CustomHeader.tsx    From lexicon with MIT License 4 votes vote down vote up 
export function CustomHeader(props: Props) {
  const { colorScheme } = useColorScheme();
  const navigation = useNavigation();
  const styles = useStyles();
  const { colors, fontSizes, navHeader } = useTheme();

  const {
    title,
    color = 'background',
    rightTitle = '',
    rightIcon,
    onPressRight,
    noShadow = false,
    disabled = false,
    isLoading = false,
    prevScreen,
  } = props;

  const statusBarStyle: StatusBarStyle =
    colorScheme === 'light' ? 'dark' : 'light';

  const headerRight = isLoading ? (
    <ActivityIndicator style={styles.headerRight} />
  ) : (
    onPressRight && (
      <HeaderItem
        label={rightTitle}
        icon={rightIcon}
        onPressItem={onPressRight}
        disabled={disabled}
        style={styles.headerRight}
      />
    )
  );

  const routesLength = useNavigationState((state) => state.routes.length);

  const headerLeft =
    routesLength > 1 ? (
      <HeaderBackButton
        tintColor={isLoading ? colors.grey : colors.primary}
        style={isLoading && { opacity: 0.5 }}
        labelStyle={[
          {
            color: isLoading ? colors.grey : colors.primary,
            fontSize: fontSizes.m,
          },
        ]}
        disabled={isLoading}
        onPress={() => {
          prevScreen
            ? navigation.navigate(prevScreen, {
                backToTop: false,
              })
            : navigation.goBack();
        }}
      />
    ) : null;

  useLayoutEffect(() => {
    navigation.setOptions({
      title,
      ...navHeader,
      headerStyle: {
        backgroundColor: colors[color],
        ...(noShadow && { shadowOpacity: 0, elevation: 0 }),
      },
      headerLeft: () => headerLeft,
      headerRight: () => headerRight,
    });
  }, [
    color,
    colors,
    headerLeft,
    headerRight,
    navHeader,
    navigation,
    noShadow,
    title,
  ]);

  return <StatusBar style={statusBarStyle} />;
}