Safe Navigate

NavControllerExt.kt

import android.os.Bundle
import androidx.annotation.IdRes
import androidx.navigation.NavController
import androidx.navigation.NavDestination
import androidx.navigation.NavDirections
import androidx.navigation.NavOptions
import androidx.navigation.Navigator

/**
 * Navigate via the given [NavDirections]
 *
 * @param directions directions that describe this navigation operation
 */
fun NavController.safeNavigate(directions: NavDirections) {
    safeNavigate(directions.actionId, directions.arguments)
}

/**
 * Navigate via the given [NavDirections]
 *
 * @param directions directions that describe this navigation operation
 * @param navOptions special options for this navigation operation
 */
fun NavController.safeNavigate(directions: NavDirections, navOptions: NavOptions?) {
    safeNavigate(directions.actionId, directions.arguments, navOptions)
}

/**
 * Navigate via the given [NavDirections]
 *
 * @param directions directions that describe this navigation operation
 * @param navigatorExtras extras to pass to the [Navigator]
 */
fun NavController.safeNavigate(
    directions: NavDirections,
    navigatorExtras: Navigator.Extras
) {
    safeNavigate(directions.actionId, directions.arguments, null, navigatorExtras)
}

/**
 * Navigate to a destination from the current navigation graph. This supports both navigating
 * via an [action][NavDestination.getAction] and directly navigating to a destination.
 *
 * @param resId an [action][NavDestination.getAction] id or a destination id to
 * navigate to
 */
fun NavController.safeNavigate(@IdRes resId: Int) {
    safeNavigate(resId, null)
}

/**
 * Navigate to a destination from the current navigation graph. This supports both navigating
 * via an [action][NavDestination.getAction] and directly navigating to a destination.
 *
 * @param resId an [action][NavDestination.getAction] id or a destination id to
 * navigate to
 * @param args arguments to pass to the destination
 */
fun NavController.safeNavigate(@IdRes resId: Int, args: Bundle?) {
    safeNavigate(resId, args, null)
}

/**
 * Navigate to a destination from the current navigation graph. This supports both navigating
 * via an [action][NavDestination.getAction] and directly navigating to a destination.
 *
 * @param resId an [action][NavDestination.getAction] id or a destination id to
 * navigate to
 * @param args arguments to pass to the destination
 * @param navOptions special options for this navigation operation
 */
fun NavController.safeNavigate(
    @IdRes resId: Int,
    args: Bundle?,
    navOptions: NavOptions?
) {
    safeNavigate(resId, args, navOptions, null)
}

/**
 * Navigate to a destination from the current navigation graph. This supports both navigating
 * via an {@link NavDestination#getAction(int) action} and directly navigating to a destination.
 *
 * @param resId an {@link NavDestination#getAction(int) action} id or a destination id to
 *              navigate to
 * @param args arguments to pass to the destination
 * @param navOptions special options for this navigation operation
 * @param navigatorExtras extras to pass to the Navigator
 */
fun NavController.safeNavigate(
    @IdRes resId: Int,
    args: Bundle?,
    navOptions: NavOptions?,
    navigatorExtras: Navigator.Extras?
) {
    if (currentDestination?.getAction(resId) != null) {
        navigate(resId, args, navOptions, navigatorExtras)
    }
}